CHEVY SILVERADO LOUD TICKING POPPING ENGINE NOISE AFM LIFTER FAILURE AND DELETE

[Music] hey guys what's up it's eric with advanced level automotive welcome back to the channel welcome back to another video today we're taking a look at this 2010 chevrolet silverado 1500 it's got the v8 5.3 liter engine the customer complaint is that the engine is running really rough it's also got a really loud tapping noise allowed popping noise and the engine oil pressure is dropping really low now it does seem to me like this could possibly be an issue with the bad lifter it wouldn't be unlikely these are pretty common for having that type of issue however i don't know yet i haven't broken into the engine yet that's the whole point of today's video we're gonna be tearing down this engine to see if we can figure out where the noise is coming from anyway i figured i'd bring you guys along let me go ahead and start the engine up let you listen to what it sounds like all right so hopefully you guys can hear that this is making a really loud tapping noise and i don't know if you guys heard that but every now and then there's a really loud pop and it sounds to me like it's coming from this side of the engine now doing a quick visual inspection i don't see anything obvious i did remove the oil cap here to try to listen to this valve cover because it did sound like it was coming from this area which i can tell you right now i'm really more focused on this side because it's pretty obvious it's coming from this side of the cylinder head but like i said this tapping noise it's really loud and it definitely sounds like it's coming from the top end so i'm pretty sure it's going to be an issue with the lifter so what i'm going to do is i'm going to pull the truck into my garage because it's really hot outside today i don't want to be tearing this engine down underneath the hot summer sun so let me go ahead and pull this into the garage and then we'll start by removing the valve cover on the passenger side over there all right guys so i've got the truck backed into my garage but listen to the way this engine sounds while it's just running here sitting at idle and i've got the hood closed but you can still hear pretty evidently that this engine has a really loud tapping noise but the thing that gets me is that it's got a really loud popping noise that pops every now and then and so if you just listen to the way this engine sounds you guys hear that man that thing is loud wow the other thing i wanted to show you guys was the oil pressure gauge so take a look here you can see the engine is running however our oil pressure is sitting pretty much damn near zero all right so because i'm pretty sure that the noise is coming from this side of the top end of the engine i'm going to start by removing this valve cover we'll do a visual inspection and see if we can find anything obvious [Music] all right guys so we've got the valve cover removed let me show you the valve train on top of the cylinder head so you can see these are the rocker arms these are the valve springs and down in here are the push rods now i already did a quick visual inspection and i wasn't able to find anything obvious and so the first thing i did was kind of move these rocker arms up and down and around and i tried to see if any of these were loose however if i go down the line and move these rocker arms they're all pretty damn tight i don't see anything that's loose none of these valve springs are broken so i think the next thing that i want to try to do is actually start this engine up with this valve cover off of the engine if we can do that we can actually see the movement of the valve train see if we can kind of narrow down which one of these rocker arm or pushrod assemblies is the one making noise so i'm gonna go ahead and plug the coil pack back in there we go reconnect all of the plug wires to the coils and now we should be able to start this engine up you can see that all of these rocker arms are moving pretty evenly now the one thing that i don't like is you can see that these over here are already getting filled with oil but take a look at these we still don't have any oil coming up through the push rods on these two rocker arms yet these are all full of oil all right guys so at this point it's pretty evident that we have a problem in our valve train now whether or not we have a collapsed lifter really the only way for us to figure that out is to go ahead and remove the lifters now in order for us to do that we do have to remove the cylinder heads and so in this case if we're going to do one side we're going to go ahead and do both sides while we're at it and what we need to figure out is whether or not we have damage to the camshaft and so a visual inspection of the camshaft is key here again the only way we're going to figure that out is by removing the cylinder head so that we can get a view of the camshaft and see if any damage was done to the camshaft judging by the way it sounds and the really loud popping noise that we were hearing i'm pretty sure that one of the lifters did collapse completely and so we might be having a lifter that's just jamming up against the camshaft and it's probably caused all kinds of damage to it so i wouldn't be surprised if this thing is going to need a new camshaft now one thing i would like to add is that this truck does come equipped with the afm system which is basically a cylinder deactivation system that is used to save fuel and so what this engine does is that it uses these special lifters in order to deactivate certain cylinders and so at certain times when the truck is idling it might only be running on four cylinders and then when you go to accelerate the other cylinders will kick in and then it'll start running like a v8 and so anytime you have these systems put into these vehicles it adds more complex moving parts which only creates more potential failures in this engine so like i said we're gonna go ahead and remove the cylinder heads and to do that we're gonna start by removing this intake manifold you guys already know how we do it let's get to work [Music] [Music] so [Music] all right guys so i've got the intake manifold off let me show you what i found so what i noticed when i pulled the valve cover off of this side is after checking all of the rocker arms i found that this one over here was actually pretty loose and so you guys can hear that clacking noise initially i thought the noise was originating from this side but i guess i was wrong because obviously this thing is loose now once i got the vlom plate which is that center plate over here for the afm system we can look down into the block and if you take a look you can see the camshaft let me focus in on that all right take a look at that roller on that lifter right there you can see that it's totally totally shot looks like the needle bearings in that roller may have locked up and you can see that it's been digging into the cam shaft there now i think what i'm going to try to do is spin the engine over and see if there's any serious damage to the camshaft i think this thing's going to need a new camshaft however looking at it from here i mean there's some wear on it it doesn't look too bad but i want to be sure that there isn't some serious damage on the other side of the camshaft so i'm going to spin this engine around all right guys so i've got a ratchet on the crankshaft pulley so i'm going to go ahead and start spinning the engine over and watch this camshaft and watch this lifter we're going to see if we have any scarring or excessive damage on this camshaft you can see me spinning it around there keep an eye on it it's coming up on the peak here oh and you can already see we got some pitting going on here on this camshaft lobe it's got some oil there let me get to the peak real quick right there let me wipe that off all right so taking a look at the top of that camshaft at the peak of that lobe you can see there's lots and lots of pitting and scarring on that camshaft so yeah at this point this thing is definitely going to need a new camshaft there's no way around it you could even see that this lifter the roller was not even spinning as we were turning the engine so no doubt this lifter grinding into this camshaft destroyed it [Music] [Music] all right guys so fast forward i've got both of the cylinder heads off and i'm getting ready to pull the camshaft out let me show you i've already got the camshaft plate off and i put the bolt back in here so i can pull the camshaft out the only issue that i'm running into is if you guys recall the lifter that we had that collapsed well the problem is is when i went to remove the lifters i was able to remove all of them except this one so if i pull up on this you can see it moves up and down but this thing is stuck in the block and i think what happened is that the bottom of it ended up getting mushroomed out and so now i can't get this lifter out of the block and so what i'm hoping is that maybe when i pull the camshaft out i can get the lifter to fall into this area and i can retrieve it from there i'm hoping that's the case so hopefully i can get this camshaft out without any trouble you can see it's already ready to come out here and then the next thing i need to do is inspect the cam bearings because again guys we had low oil pressure and so what i'm worried about is whether or not we have damage to the engine bearings and that includes not only the rod bearings the main bearings and especially the cam bearings now the reason the cam bearings for me especially is because these cam bearings i cannot replace them while this engine is in the truck if this thing needs new cam bearings this engine is going to have to come out completely and it's going to need a complete rebuild i'm hoping that's not the case but again i've got to remove this camshaft to take a look at it by the way i know some of you guys are going to ask me eric why don't you check the engine oil of course i checked the engine oil it was one of the first things that i did and let me tell you guys us mechanics we can tell when you haven't been keeping up with oil changes because it looks like this so even though this engine was full of oil this oil hasn't been changed in quite some time because it's really dirty [Music] all right guys so we've got the camshaft out you can see this here is one of our cam bearings let me wipe it down so we can get a look at it i'm gonna run my finger across it and see if i feel any grittiness or scratches and i can tell you so far this feels pretty good actually now in order to see the rest of the cam bearings i'm going to need to use a borescope or a camera so that i can stick it in there but before i do that i want to make sure that i can even get this lifter out of the block again you guys can see that i can't pull this lifter out let's take a look down here all right so can you guys see that lifter i'm moving it up and down and the problem is that it's hitting the inside there let me see oh i twisted it it feels like it's getting ready to fall through let me uh let me put the camera down and try to stick a magnet in there because i don't want this thing falling into the abyss where i can't get it or maybe i can get my fingers in there oh yeah come on now the other problem is that this is actually one of the afm lifters it's got the spring on the top side of it that gives it that extra length okay guys this is a little more difficult than i thought it was going to be let me see if i can just force it up through the board nope that thing's not going through come on get out of there you know what i might have to do is actually just break the spring at the top i wonder if i can do that all right guys so i spun the crankshaft over and it looks like we might have enough room yeah see this thing just fell out so i'm gonna try to use a magnet to scoop it up through the hole up here and let's see if we can get it without dropping it into the crankcase there oh shoot crap okay so i dropped this thing into the crankcase which i mean might not be a big deal because i'm probably gonna have to pull the oil pan anyway i hear it i can feel it can i get it okay i think i got it i think i got it let's see if i can do this come on baby come on easy there we go okay i'm gonna put the camera down and use my other hand got you baby got you all right guys so now that i've got the lifter out of the way i'm going to go ahead and take my inspection camera and i'm going to stick it into our cam board and we're going to take a look at all of the cam bearings all right guys so using the bore scope that i have here you can see that i can get a pretty good image of our cam bearings and so this is our front one here and i can already tell you that this front one looks really good there aren't any deep gouges or anything like that just normal wear but what i'm going to go ahead and do is i'm going to stick this in a little bit further and i'm going to move over onto the next bearing now moving on to the second bearing you can see that on this one here we have this sort of streak going down the center uh the reason for that is because the camshaft has a slit or a groove so that's why we have this streak going down the middle however we don't have any excessive deep gouges no deep scratches and so this one looks pretty good i'm going to go ahead and move on to the next one all right so this is our third bearing here and again you can see that we have some just normal wear nothing excessive no deep gouges no deep pitting this bearing still looks like it's in pretty good shape let's move on to the next one all right so here we have a close-up of our fourth bearing and once again all i see is normal wear no deep gouges or scratches now let's go to our very last one now here we have our last and final bearing the one all the way in the rear you can actually see it through the valley over here and if we look at this bearing once again we pretty much just have normal wear and so that's definitely a good sign these cam bearings are still in good shape there's no need to replace them let's go ahead and move on to the next thing okay guys so over here on the workbench we have all of the parts laid out up here i have both of the cylinder heads down here we have the cam shaft we have the rocker arms the lifters we have the cam gear for the vvt system and if you look right here this is our afm lifter that failed take a look at the roller at the top you can see that it is completely completely sheared off on this one side so if i spin it around you can see that it's round at that point and then coming back around you can see it's completely flat all of this metal has been completely worn through and you can see the needles for the bearing in there now of course we had a difficult time removing this because uh when the camshaft was grinding into this housing for the lifter you can see that it created a lip and so that's why we couldn't pull it back out of the engine block now of course with this kind of damage it really did a number on the camshaft and so let me show you guys where the camshaft lobe was completely eaten up and so if you take a look at this lobe right here this is the lobe that our afm lifter was riding on and you can see that this thing is completely destroyed the lifter was just grinding into this lobe metal to metal so at this point this engine is going to need an entirely new camshaft it's also going to need new afm lifters i may even recommend replacing the oil pump while we're at it however there is one more option that i want to talk to the owner about and that is the option of doing an afm delete now if you guys didn't know the afm system or dod systems whatever you want to call it on these chevrolet engines are notoriously problematic and are prone to having failures just like this there's even a class action lawsuit for vehicles as recent as 2022 where these systems are having complete failures and causing internal engine damage just like in this case doing an afm delete is something that i would totally recommend especially if it's a vehicle that you're going to keep for the long term spending a little bit of extra money on buying the delete kit is definitely worth it so i'm going to talk to the customer see what he wants to do and i'll get back to you guys after he's made the decision one week later all right so fast forward check out what i just got in the mail this here is our afm delete kit from the guys over at ams racing no this video is not sponsored by them they did not send this to me for free i paid full price for this item i am in no way affiliated with them i just found this online i thought it was a really good deal it shipped really fast let me go ahead and open this thing up and show you what's inside alright guys so here we have everything laid out that came inside of the box now first of all i want to start by saying they did a really good job as far as packaging everything everything was in its own separate box everything was really well packaged and protected so there was nothing damaged during the shipping now if you guys look over here you can see the first thing that we have is this block off vlom plate so if you guys remember on the original design we have this vlom which is a solenoid assembly but here you can see that we have these little block offs and little o-rings to seal off the oiling ports that feed the afm lifters and up here you can see it's just a flat bare bones piece and so this is the main part here that makes this afm delete system because we are deleting the vlom now if you guys look over here we have a brand new camshaft now this is an original gm camshaft it came in an original gm box and so that's really cool that they put or provide a high quality camshaft brand new in the box now again this here is a stock camshaft i did not go with anything high performance nothing like that it's just the factory regular camshaft and it works with both afm and non-afm designs over here you can see that they do provide us with some head bolts they even give us the bolt for the harmonic balancer or the crank pulley over here you can see that we have our diablo sport predator tuner so this is what we're going to need in order to disable the afm system in the computer over here we have a whole full gasket set so if you look you can see that we have a timing cover gasket it comes with the water pump gaskets and the timing cover seal and then in here we have valve cover gaskets exhaust manifold gaskets we have the intake gaskets we have various o-rings and we have some valve stem seals if you're going to replace those and then we also have our head gaskets in there they even give us another one of these dlom plates gaskets which this one already came with one and so you got an extra one there in case you need it now over here you can see we have all 16 of our ls7 style lifters now the cool thing about this is they come pre-packaged and sealed now one thing i would like to note is that on the box for the lifters it does tell you please do not pre-soak the lifters in oil for an extended amount of time lightly coat the outside of the lifter and install you can prime the oil system once installed before initially cranking the engine and so i think they tell you that because having these things fully primed when it comes down to torquing the rocker arms can affect the adjustment and so it's probably better not to have them pre-filled before you torque down the valve train assembly now up here we have all of our lifter trays and you can see that these are pretty high quality trays i'm not sure if these are the oem ac delcos to be honest with you they might be some aftermarket ones though that does look like a gm number right there so anyway they seem to be pretty good quality so far i'm really impressed with this kit there are a couple of small things that it didn't come with like first of all um we are going to drop the oil pan so that we can block off the pressure relief valve and this kit did not come with the plug for that so we are going to have to find one second of all it didn't come with the camshaft plate if you guys don't know what i'm talking about i'm talking about this little guy over here and so this did not come with the kit and in my case i do want to replace it because there is a little gasket built into it so i will be picking one up at my local auto parts it's no big deal one hour later okay guys so i just wanted to show you a few of the other parts that i had to buy that didn't come with the kit now these parts are not necessarily required to do this however there are some things that i am going to be doing while i'm in there we may as well do it and so first of all over here we have this oil pump and what i'm using is going to be the melling high volume oil pump and the part number on this one is going to be the m295 hv stands for high volume so we are putting a nice high quality oil pump in this thing the other thing that i have here is the oil pan gasket and along with the oil pan gasket i did have to get this gasket for the oil cooler lines i am going to be dropping the oil pan in order to plug off the pressure relief valve so this gasket is required in my case the other thing that i went ahead and bought was this vvt solenoid now this vvt solenoid is actually the bolt that holds the camshaft gear on so let me open this up so here is our camshaft sprocket bolt slash timing solenoid now the reason i am replacing this is because we are not deleting the vvt and these vvt solenoids are known for having high failure rates and so it's better to go ahead and change it while we have it out now of course the other thing that i'm changing while we're at it is going to be the oil filter you can see that i have an ac delco unit and we have six quarts of this 5w30 full synthetic dexos engine oil we also have a couple of gallons of the ac delco decks cool and i have a full set of acdelco premium iridium spark plugs so we are going to be replacing these as well and i ordered the cam plate which should get to the parts store in about an hour so now that i've shown you everything that i got i'm done talking i got to get to work all right guys so fast forward i've got the oil pan off i already went ahead and i gave it a good bath in the parts washer now taking the old pan off wasn't really that difficult luckily this truck is a two-wheel drive so all i had to do was drop the little frame at the bottom i had to drop the rack to give it enough clearance and i was able to pull the oil pan out no big deal now let me show you guys where the pressure relief valve is located so if you look right up here down here is where the oil filter attaches and then over here we have our oil cooler lines and right up here we have our pressure relief valve now i already went ahead and unbolted it and if i take it out you guys can see that we have a 14 millimeter 1.5 threaded hole and so basically what i went ahead and did was i got a drain plug 14 millimeter by 1.5 and this fits right into that hole and so i'm going to screw this down tighten it up that should do it our hole is now plugged up we can go ahead and start putting this back together all right guys so it's time to install the camshaft i've already got it oiled up and ready to go in let's do this very very gently very careful trick is to try to keep this thing centered and just be real careful not to hit the cam bearings as you're going in like i said you got to make sure your camshaft is really well lubricated nice and easy take your time when you're doing this guys make sure you don't rush when you're installing a camshaft getting toward the last bearing here this is where it helps to have a little bit of leverage and you guys can see that i'm actually using the old bolt right here or the old vvt solenoid and that's what i'm using to give me a little bit of leverage right there perfect now what you want to make sure is that once your camshaft is fully installed you want to be able to spin this thing easily by hand this camshaft turns nice and easy perfect all right guys so now that i've got the camshaft installed it's time for me to start reassembling this motor [Music] so [Music] all right guys so i've got the cam gear pre-installed i have not torqued it down yet this is our new bolt however i wanted to show you guys our timing marks before i went ahead and i pulled the tensioner so if you guys take a look down here you can see that i have both dots lined up right here and so our timing chain is centered and so i'm going to go ahead and i'm going to pull the tensioner here now our tensioner is activated we can go ahead and torque this down [Music] so [Music] all right so now that i have all the lifters installed i've got my deck surface prepped everything's cleaned up i'm getting ready to throw the head gaskets on so that i can install the cylinder heads uh now one thing i wanted to mention if you guys were curious how i got these pistons so clean is basically what i went ahead and did was i spun the engine over until each piston was at the top and then i just basically took a wire brush and some carb cleaner and cleaned off these pistons really well over here i've got both of the cylinder heads cleaned prepped and ready to go i basically use a scotch brite pad like this and some brake clean in order to clean the surface of the cylinder head and i did the same thing with the deck surface on the engine block another thing i'd like to mention is that i did take a rag with some fresh oil and i lined the cylinder walls with fresh clean oil so that the cylinders have some lubrication when we go to crank this thing [Music] [Applause] [Music] [Music] all right guys so after a lot of work i finally got the rest of the engine put back together um i already went ahead and i filled this thing up with engine oil and i also put some coolant in there and so i'm getting ready to crank the engine over now what i went ahead and did was i pulled out the fuel pump control module fuse which is going to be fuse number 21 which is a fuse that goes right in here it's a 25 amp fuse and so i pulled this fuse out because what i want to do is i want to crank the engine over without the engine actually starting now the reason i want to do that is because i want to prime the oil pump prime the oiling system i want to make sure that we get oil throughout the entire system before we attempt to start this thing okay so i've got the key in my hand i'm going to go ahead and attempt to crank this thing over and again what we're gonna do is we're going to be watching uh for the oil pressure gauge which is located right over here and so i'm gonna crank this thing over and see if we can build up some oil pressure let's wait a minute we don't want to overheat the starter [Music] looks like we might be getting some oil pressure here so let's let the starter cool off for a second then we'll try it again [Music] okay all right so i've got the tuner connected to the obd2 port i'm gonna hit okay and then it tells us to turn the ignition on it is on so i'm gonna hit okay again attempting vehicle communications please wait loading your vehicle application please wait it says reading the engine let this thing finish reading transmission all right i hear some clicking going on here the door is just locked and unlocked it says verifying the stock file integrity so i think what it's going to do is it's going to save the stock file yeah it said stock file or saved all right so here's where we have the option to pick what type of tune i think what we're going to do is we're going to do stock with options again this truck is a daily driver and we're really not looking for performance uh we're really just looking to delete the dod or the afm so we'll hit okay it says here attention stock with options has no tuning and only changes option settings like tires gears etc etc okay we'll hit okay now you can see all of our options here we have speed limiter gear ratio tire size uh we have shift points fan temperature and here's the one we're looking for right there afmdod so let's select this then i'm going to scroll down and we're going to click disabled so we'll move on to continue building tuning please wait it says attention install the stock with options file yes so we're going to hit okay installing engine 96 97 98 99 100 all right resetting the vehicle please wait now it says installing transmission we'll let this thing finish and we're almost there resetting the vehicle please wait turn the ignition off so we'll switch this to the off position press ok when completed turn the ignition on do not start the engine and then we'll hit ok turn the ignition off hit ok when completed so let's do this again we'll hit ok stock with options tuning is now installed all right so hit okay to continue and it looks like we're done so let's go ahead and turn the key on all right so i've got the fuse reinstalled let's go ahead and see if we can start this thing all right guys so the moment of truth i'm getting ready to crank this thing over and see if we can start it i'm not going to lie i am kind of nervous but i pretty much went over everything i know i'm not forgetting anything so there shouldn't be any reason why this engine shouldn't crank right up and start and run smoothly so let's go ahead and give it a shot [Music] oh my gosh this thing started right up and check out that oil pressure gauge wow that pressure's up there our idle is a little bit high right now because we just started this thing let me take you guys under the hood check it out guys this thing is running and it's actually running really really smooth listen to the engine as the idle starts to come down i don't hear any knocking i don't hear any misfiring i don't hear any vacuum leaks there's no ticking noises nothing like that so yeah let me go ahead and let this thing warm up then maybe we'll take it for a test drive i don't know about tonight right now it's actually like two o'clock in the morning so it may be a little bit late for that i might have to test drive it tomorrow but like i said i'm really happy with the way this turned out so far this thing sounds great [Music] all right so here we are on our first official test drive after fixing the truck now i have been driving for about 20 minutes or so uh just listening to any little noise that the engine might be making listening to see if we have any ticking noises any misfires anything like that and so far i've heard nothing the engine is nice and quiet it feels great the power comes on really smooth and so i'm really happy with the way this thing came out if you guys take a look at the instrument cluster you can see that our oil pressure it's hanging somewhere around 40 right now at 1000 rpm i am coming up to a stop here uh but basically the oil has been jumping between 40 and 60 psi as i'm driving uh naturally the pressure is going to increase as the rpm goes up and so again the oil pressure is looking really good the engine sounds great it's got great power we don't have any check engine light thanks to the uh tuner it allowed us to delete the afm system without having a check engine light kudos to diablosport for making an awesome tuner it's time for me to get this thing back to the garage and have the customer pick it up anyways guys at this point i'm gonna end up the video like i always say i hope you found it useful informational educational entertaining if you did make sure to give it a thumbs up if you haven't done so already make sure you subscribe to the channel hit that notification bell and i'll see you guys in the next one thanks [Music]

Channel: ADVANCED LEVEL AUTO

Views: 946,961

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Id: fmhK6P13FRE

Length: 36min 36sec (2196 seconds)

Published: Thu Jul 07 2022