ABUSED SUPERCAR DODGE VIPER NO START DIAGNOSIS (CRAZY!)

[Music] hey guys what's up it's eric with advanced love automotive welcome back to the channel welcome back to another case study you know every now and then i'll get called out for something pretty interesting today's one of those days right behind me we have a 1993 dodge viper rt10 the customer complaint is that the vehicle is a no start it's a no crank no start now the mechanic's already taking a look at it they figured out that they could get the engine to crank over if they play a little bit with the clutch pedal uh they could get the engine to crank but they still can't get the engine to run so that's why they called me out to come check it out anyways you guys already know how we do it let's go ahead and get started but first let's do a walk around [Music] okay guys so as you can tell the car has seen better days now our job is to get it back up and running first thing i noticed is that when i tried to get inside the vehicle to crank it up i couldn't find a door handle anywhere so i looked around and for the life of me i could not figure out how to open the door turns out that you have to open up this little window here you see it's got a zipper on the outside of this vinyl window and you just reach your hand in here and open up the door so i mean i don't know if this is how they came from the factory seems to me like a pretty bad design because you know anyone can just get into your vehicle by pulling the zipper but anyway uh so the door is open now let's go ahead and get inside take a look again the mechanics have been working on this thing so we've got some trim panels loose uh but first things first let me get inside and let's see if we can start this thing okay so we're inside the vehicle i've got the key right over here i'm gonna go ahead and stick it into the ignition if i can find it right over here there we go turn the key on as you can see the instrument panel lights up we have a check engine light and uh looks like gauges here are working so make sure this thing is in neutral i'm going to go ahead and put my foot on the clutch push down and man this seat's kind of far back so i got to lean back and i'm going to go ahead and attempt to crank it and nothing happened so let me try that again show you guys tried to crank it nothing is happening now the mechanic did mention to me that uh he could get the engine to crank over by playing with the clutch pedal a little bit and i can tell you right now it does feel like it's pretty loose so let's take a quick look down here and see if we can figure out what's going on okay so looking in the footwell here again we have our three pedals the accelerator pedal brake pedal and this is our clutch pedal here and again the first thing i noticed is that this clutch pedal is pretty loose so if you look up at the bracket see if i can show you guys looks like the bushing up here is kind of worn out so yeah we're gonna need to uh get that fixed but if you look right over here i think you'll spot the uh neutral safety switch or the clutch safety switch let me focus in on that right there this is our clutch safety switch as you can see i can move this thing up and down so if we push it all the way up this should be closed all the way so this should close the switch and allow us to crank the engine over now if we push down on the clutch pedal you'll see the rod going in and looks to me like the clutch pedal is being stopped by this bracket here and you can actually tell where this piece right here has been hitting the bracket if you take a close look you'll see how the bracket is kind of eaten up right here so i wonder if what they did was push the pedal over and get past the bracket because if i push it down like this you'll see it hits the bracket but if i move it over just a little bit beyond that point i can go a little further yep right there and then fully engage that clutch switch so [Music] i think that's how they're getting this thing to crank over but i wonder if i can just push this up like this and get the engine to crank so i'm going to try to hold it like this let me put the camera down and i'm going to see if i can crank the engine over sorry guys we're kind of in a weird position here but i'm gonna try to crank the engine over oh yeah yeah it's an issue with this clutch safety switch i'm gonna try to crank it over again sounds like the battery's pretty low so we're gonna have to put a jumper on this let me see if i can do that real quick okay so as you guys can see we have the hood open and i've got the jump box connected if you look right down over here you'll see that we have uh where we can hook up the positive lead of our jumper cable now they don't give us a post for the negative so i've just got it attached to a bracket right here on top of the intake manifold so that should be a good ground now moving inside the vehicle to make it easy on me as far as cranking it i just went ahead and took a pair of vice grips and i clamped down the clutch safety switch let me take you down in here show you okay so hopefully you guys can see that this is the clutch safety switch right here i just used a pair of vice grips i slid that switch up to close it and i put a pair of vice grips on the rod to hold it into place so that way i don't have to mess with the clutch pedal to try to get this thing to crank now of course the shifter is in neutral and let me go ahead and engage the parking brake just to make sure that this car doesn't go anywhere okay now let's go ahead and try to crank this thing over okay so as you can see engine cranks but it does not start now this is a 1993 vehicle so it is pre obd2 as far as scan tools we're not going to have a whole lot of information that we can gather from the computer i think the first thing that we should do are just some basic checks we're going to go under the hood we're gonna check for spark we're gonna check for fuel we're gonna see if we can figure out what we're missing okay so the first check we're gonna do is we're gonna go ahead and check for spark so as you can see i have my test light oh i just lost it let me pick it up right here got my test light connected to a ground i'm just on the alternator bracket over here and i'm going to go ahead and pull one of these ignition wires off and we're going to set it up here and then i'm going to take my test light stick it into the end of it and then i'm going to have somebody crank the engine over and i'm not looking for the test light to light what i'm looking for is an arc to happen across this uh gap between the test light and the ignition cable so i'm gonna go ahead and have somebody crank it over okay okay i don't know if you guys could tell but i didn't see any spark jump in the gap here i know it's pretty sunny outside right now but uh i should still be able to see a pretty significant or clear spark i didn't see anything all right so it's kind of bright outside so we moved it inside of the garage here it's a little bit darker so we might be able to see a little bit better we're going to go ahead and crank the engine over and see if this thing has any spark daley okay i don't know if you guys can see that but we definitely had spark it's kind of weak but uh we still had spark so that's one thing to note let's go ahead and move on to the next test okay so the next test we're going to do is we're going to check for injector pulse so i went ahead and i chose one of the injectors we're just going to pick this injector right here in the front now i already went ahead and removed the clip it goes around the connector so we're just going to go ahead and disconnect this now what we're going to do is we are going to determine which is the control wire and which is the power supply for this injector and the way i'm going to do that is i'm going to use my test light here my test light's connected to a ground and we're going to go ahead and turn the ignition key on then we're going to touch both of these terminals and we're going to see which one has a power source put into the other now i'm going to go ahead and touch both of these pins again the ignition switch is in the on position and we don't have power on either one of these okay now some of these dodge models i know will not have a power feed on the injectors or control until we start cranking the engine over so let's go ahead and try to crank the engine over okay so i don't show a power on either one of these two pins okay so before we move ahead um there is something i did notice and if you guys look at this connector uh we got a bunch of green crusties in here let's try to focus in on that right there so we got some green crusties on this connector i just wanted to make sure that i was having a good connection you see that so i just wanted to make sure i had a good connection with my test light i'm going to try that test again so we're going to stick the test light in here again we're going to make sure we've got a good connection with the terminal i'm just going to kind of give it a little bit of a scraping action here so we can get good contact with the terminal let's try to crank this over again we're going to see the key on so we have power there well our battery is getting low try it again okay so our battery is low um but we're going to try and see if we have any action on this side over here okay so we know we have power to the injectors um the jump pack's just getting low let me stick this thing on the charger and then we'll come back to this okay okay all right so as you can see we have power on our green and orange wire now let's check the other terminal again actually in order to check the other wire which is going to be the control wire we're going to need to change our lead from the ground to a power source so let me get to the battery power source on that side okay so i've got the test light connected to battery power post right here let's go back to the other side okay so now we're back on the control wire let's go ahead and crank it okay i don't know if you guys can see it let me try to zoom in here [Music] it's barely showing up on camera but you can see that we do have injector pulse let me try to focus in let me get somewhere darker here right there okay all right guys so as you can see we do have injector pulse we do have power getting to the injectors we have good injector pulls so let's go ahead and move on to the next step okay guys so we know we have good spark and we know we have good injector pulse so next up we want to verify whether or not we have a problem with the fuel system you know it could be something like a fuel pump or a fuel delivery issue and one of the quickest ways to verify that is by taking a can of starter fluid now i know you guys know that you need to be real careful when you're using this always make sure that you have a fire extinguisher nearby we're just going to put a quick spray into each one of these intakes and we're going to attempt to crank the engine over we want to see if the engine attempts to start and that's going to give us a clue as to whether or not we have a fueling issue so i'm going to go ahead and give it a quick spray let me get in there [Music] [Music] okay and as you guys can see the engine attempted to start and it just died so it definitely looks like we have a fueling issue let's go ahead and attack the fuel pump okay guys so while we're trying to locate the fuel pump which is turning out to be a little more difficult than we thought because we can't find any service information that tells us where the fuel pump is located uh there is one quick thing i wanted to explain to you guys uh that is the reason for me using the starting fluid instead of just checking for fuel pressure and let me explain to you guys why so if you take a look at the intake manifold you'll notice these are the fuel injectors up here at the top and what you'll notice is that if you look there is no external fuel rail or access to the fuel rail to these fuel injectors and if you pay attention you'll realize that there is no fuel rail it's actually cast into the intake manifold so there really is no way or no simple way to check the fuel pressure up here at the engine so that's why i opted for using the starting fluid anyways i just wanted to let you guys know let me go ahead and figure out where this fuel pump is located alright guys so check this out i couldn't find any information online or on all data or on mitchell as far as how to remove or get to the fuel pump let me show you guys underneath the vehicle where the gas tank is located so if you look down here let me show you guys up above the frame you'll see the fuel filter located right up there and right above it is the gas tank now this gas tank in order to bring it down you would think that you could remove this frame on the back side but this is actually not a subframe this frame is actually one piece throughout the whole bottom of the car so there really is no easy way to drop the gas tank on this you would literally have to remove the fiberglass body off of the frame so i'm not really sure how we're going to get to the fuel pump now i thought maybe there was some access behind the seats but we tried to fold the seats over remove them we couldn't get any access to the fuel pump i think there is one more access point that we might try there seems to be a panel in the trunk that's riveted shut and i think that we might have to drill the rivets out of the panel in the trunk uh and then maybe we might be able to gain access to the fuel pump again i'm not really sure we're just kind of trying to figure out how to get to it so that we can test it all right guys so we're back uh it's actually been about two weeks now since i've last seen the vehicle and quite a bit has happened since then so let me get you guys all caught up first of all the mechanics did go ahead and replace the fuel pump let me show you guys so there is an access panel or an access door in the trunk here so if you look around here there was a cover and it was riveted on you see these holes so they had to drill the rivets out in order to remove that cover so that they could gain access to the fuel tank as you can see this is our fuel tank it's kind of small and you can see our two straps for the fuel tank so they went ahead and they took it out and when they pulled the fuel pump out they noticed that the fuel inside the tank was really really nasty it smelled really bad and it was full of a lot of crud so they went ahead and cleaned out the entire gas tank they put a new fuel pump in it they put a new fuel filter and then they cranked the engine over but it still wouldn't start and so they decided to disconnect the line underneath the vehicle and when they did that they saw fuel shooting out but there was a lot of crud in there so they tried to flush the line that goes all the way up to the fuel rail on the engine and when they tried to pressurize the line they noticed that it was pretty much blocked so they had to shoot some carb cleaner through the line to get it to flush all the way through and they were able to remove the blockage that was in the fuel line but even after doing that they still were not able to start up the vehicle and so at that point they wanted me to take a look at it because um like i explained to you guys before this engine does not actually have a fuel rail if you take a look at this intake manifold and these injectors you'll notice that the injectors are inserted into the casting so there is no actual physical fuel rail the fuel rail is cast into this aluminum intake manifold and if you look down in here you'll see the fuel line where it attaches into the intake manifold it's kind of hard to see let me see if i can zoom in uh i don't know if you guys can see that metal line down there but uh it's just bolted to the intake manifold down there and that is the only fuel line going to the intake manifold or this fuel rail so if you take a look at this thing there is actually no return line i believe the fuel pressure regulator is actually built into the tank it's part of the fuel pump hanger assembly so in this case it's a pretty simple setup we just have one straight line coming from the fuel tank up to this fuel rail or this intake manifold which supplies fuel to all of these injectors and that's how these injectors are able to supply fuel to the cylinders now naturally our concern here is that we may have some type of blockage in this fuel rail that's cast into this aluminum housing so if that's the case uh first of all how do we go about diagnosing that and second of all how do we actually clean it out so that's what i'm trying to figure out now like i said the last time i tried to take a fuel pressure reading with the fuel pressure gauge and i could not visually find any schrader valve because there is no fuel rail but the mechanic actually pointed something out to me if you look right here deep behind the intake manifold i don't know if you guys can see it let me try to focus in on that and see if i can get a good image right there this little cap right here is going to be the access or the schrader valve to the fuel line so i'm gonna pull this off this is the cap right here i can already smell that fuel smells really really nasty it smells old and there's our schrader valve again i don't know if you guys can see it on the camera but what i'm going to do is i'm going to go ahead and hook up my fuel gauge maybe try to get a pressure reading we can also probably just use the hose to take a fuel sample i think that might be the first thing i want to do i want to see what the fuel inside of this fuel rail looks like because like i said they already flushed out the line everything from the gas tank all the way up to this point they've already flushed it out whatever we're dealing with is whatever is inside the intake manifold so let's go ahead and do this all right so what i have is my uh fuel hose adapter here from my fuel pressure tester kit and i'm just going to screw this onto the back of the intake manifold here it's going to be kind of a tight spot let me try to get this in there gotta keep it on there straight make sure we don't cross thread this thing ah come on this uh coolant hose is kind of in our way here all right guys i'm gonna need two hands for this i'm gonna have to put the camera down all right so let me show you the setup that i have i have the fuel adapter line or the hose connected to the schrader valve here and then i just have this uh rubber hose going into an empty water bottle and i'm going to use that to take a fuel sample so let me go ahead and crank the engine over okay i'm just going to reach in and try to turn the key let's see if we can crank this thing and get some fuel [Music] and we have no fuel coming up to that water bottle let me try it again sounds like the battery's dying yeah got nothing check that water bottle again make sure yeah guys we have no fuel coming up to this point let me get a jump pack on this thing and try to crank it again all right so we got the jump pack connected we're going to attempt to crank it once again ah make sure i got a good connection oh we got to turn on the jump pack like that [Music] this thing started up okay why do i have no fuel travis really sounds like this thing wanted to start but i'm not showing any fuel coming out of this end i wonder if we might have a blockage somewhere in the fuel rail and it's not even getting out to this point over here make sure i'm tightened all the way down yep that's tight okay i wonder what to do next maybe we should try pulling out one of the injectors uh i guess we could pull them out one at a time to see which ones are getting fuel and which ones are not i guess that's an option maybe we're only getting fuel to certain parts of the fuel rail and there's a blockage somewhere i guess that's probably going to be the next step let me go ahead and try to pull these injectors out all right guys so i was hoping to pull those injectors out today but unfortunately we had a change in weather so it's raining pretty hard and uh you know there's really nowhere for me to put it inside at the moment they're packed right now this car is just kind of sitting out there so i had to close it up i'm just gonna have to come back tomorrow hopefully it's not gonna be raining and we'll get back to it all right guys it is the following day it is uh nice and sunny today so we're gonna go ahead and attack these injectors now i went ahead and i removed the injector connectors these had these uh little clips around them so i had to disengage the clips and disconnect all 10 injectors and like i noticed before there is some green corrosion in pretty much all of these connectors so we are going to have to give these connectors a treatment maybe hit them with the wire brush that one looks pretty bad you see those green crusties in there so yeah these injectors or these connectors are going to have to get cleaned up make sure they have good contact but again we're worried about fuel delivery we know that we pretty much should have fuel pressure reaching up to the plenum here at this point where the line connects down here at the bottom you see that uh metal tube where it connects to the intake manifold but what we want to know is why are we not getting fuel out of the back side of the intake manifold over here where the schrader valve was so i'm going to start by removing the injectors i think what i'm going to do is probably just remove them one at a time maybe starting with this one because this one is closest to where the fuel supply is i want to go ahead and remove this injector look inside the hole and i want to see if we're getting fuel delivery into this part of the intake manifold so let me go ahead and pull this injector out all right so it looks like we have an 11-millimeter bolt holding the injector down i'm gonna go ahead and remove it now we can remove this little clamp make sure we keep these together we do not lose these now it looks like i should just be able to pull up on the injector i kind of figured it was going to be stuck in there so i've got a little pry bar i'm going to try to pry up on this fuel injector sounds like there's some pressure in there oh yeah we got fuel coming out you guys see that there's some pressure in there got to be careful yep let me zoom you guys in all right so if you guys pay attention to the fuel injector i'm gonna pry up on it you guys are gonna be able to see it that we have fuel pressure coming out of it whoa gotta be real careful with that okay so we know we definitely have fuel pressure coming up to here i guess before i try to pull this injector out let me see if any of these injectors do not have fuel pressure behind them okay so i have all of the clamps removed for the fuel injectors on this side of the intake manifold i'm going to try to pry up on this one see if we have any fuel pressure behind it [Music] we got some pressure here i don't know if you guys can see that i'm gonna try the next one we got some fuel pressure here let's try the next one yup we got some pressure there now the next one looks like we've got pressure there let me try to uh well let me go ahead and re-prime the fuel pump so we can get pressure back into the intake manifold and i'm going to go ahead and remove the clamps on this side for the fuel injectors on the other side okay so i went ahead and i removed the clamps for the injectors on this side and i also went ahead and i cycled the key in order to prime the fuel pump i'm basically going to do the same thing like i did on the other side i'm going to gently pry up on the fuel injector i want to see if there's any fuel pressure behind this so pay attention a little bit of pressure behind that one really not a lot because i don't see any fuel coming out on the other side we had uh plenty of fuel coming out whenever i did this test so i'm gonna do this injector here you see how fuel came out right there you can hear it hissing let me try the next one here oop see how that fuel just shot up got some good pressure behind it try this one here move that connector out of the way come on move okay pay attention see how we got fuel coming out there lots of pressure try this one same thing got fuel coming out but i did not see any fuel coming out of this last injector here and this other one here was kind of low pressure so i'm going to pry up on this one again i don't want to break this injector i'm just trying to pry it up now the hole but we have no fuel coming out maybe it might work a little bit easier if i use a pair of pliers to pull up on it so let me go ahead and try that alright guys so check this out i went ahead and i double checked my test i uh re-primed the fuel pump and i uh pulled up on these injectors one at a time and again there was fuel squirting out of these injectors when i got to this last one i pulled up on it again and take a look at the [ __ ] that came out of here i don't know what that is but there was a bunch of crud that came out of this injector here so i'm gonna try to pull this injector out we're gonna see what it looks like i'm going to go ahead and try to pull this injector out there's still some pressure behind it but let's see if we can get it out oh yeah so take a look guys you see that crud that just came out of that hole sorry about the focus on my camera it's acting up today you see that crud that just came out of that hole this thing is sludged up we're going to attempt to pull this fuel injector out and take a look inside of that hole bye there we go take a look inside of that hole [Laughter] wow see the injector yeah i don't think the we're going to be able to clean those injectors that's going to have to get replaced yeah guys so it looks like the intake manifold is gonna have to come out in order for us to uh completely flush the fuel rail that's built into this intake manifold i don't know if i'm gonna be able to do that for you guys i don't know if i'm gonna be able to show that on camera they're probably gonna do that here at the shop but that's what's gonna have to happen just wanted to show you guys another close-up of this fuel injector that we pulled out take a look at that that is insane this thing is so clogged up and full of sludge i don't know if this is due to the fuel sitting for a long time or maybe somebody tried to put sand and the fuel tank because this definitely feels like sand it's gritty i've never seen old fuel do this before so kind of looks to me like somebody tried to do some serious damage to this engine let's take a look inside of that hole you can see all of this crud that's in there and it's real gritty feels like sand like i said this stuff was all throughout the fuel line in the gas tank so yeah this thing is going to need to get removed the intake manifold is going to need to get flushed out and these injectors are going to have to get replaced all right guys so let me show you they've got the intake off i was just stopping by the shop and uh see if i can get you guys an image of what they're doing or what they did so they already went ahead and cleaned out the ports let me show you where the fuel port is so again these ports at the top are where the injectors are located they've got them all nice and cleaned out now they completely flushed it out and if we look at the bottom here you'll see this is where the fuel intake goes the fuel supply goes into the cast aluminum here and it goes through these channels inside of this intake manifold then it comes out over here this is where the schrader valve was and the mechanic was telling me that when he pulled the schrader valve out there was just a bunch of crud in there they couldn't even blow it out they had to use like a coat hanger to uh get all that stuff broken up so that they could flush it out anyways this thing is now completely clean they're getting ready to put it on i'm not sure if i'm going to be able to film that for you guys i'm sorry i just wanted to show you it while they had it off the vehicle this thing is nice and clean they're going to go ahead and reinstall it on the viper and they're going to put new injectors on there we're going to see if we can start this thing up [Music] [Music]

Channel: ADVANCED LEVEL AUTO

Views: 307,643

Rating: 4.7896228 out of 5

Keywords:

Id: mVx_RVwPYi8

Length: 31min 54sec (1914 seconds)

Published: Thu Jul 30 2020