The REAL Way to Warm Up Your TPI - KTM / Husky / GAS GAS [2022, 2021, ‘20, ‘19, ‘18]

hey guys thanks for watching today i  want to talk about the warm-up procedure   on these tpi 2 strokes. there's been a lot of  talk about how to properly warm up your two-stroke   and one of the points i want to get across here  is the tpi system is fundamentally different than   a carburetor and so you're going to need to use a  different warm-up procedure than you used to use   on your carbureted two-stroke. i feel the need to  bring this up because there's been a couple videos   posted on youtube lately that talk about a warm-up  procedure for your tpi and they suggest that you   warm it up like you did your carpeted two-stroke  and it's just not going to work you might have   some decent luck with that but you're increasing  the likelihood that you're going to foul plugs and   i want to talk about why that is first of all  the tpi system isn't super sophisticated for   an injection system it's actually fairly basic  the ec uses a couple different maps and inputs   from various sensors to determine how much oil  and fuel to inject into the engine an example of   this is the oil injection map the oil injection  map uses rpm and throttle position to determine   how much oil is injected so pretty basic right  fuel injections not that much more complicated   uses a couple different sensors in addition to rpm  and throttle position to determine your fueling   now one of those sensors is the crank case  pressure sensor those have been causing people   to have issues see my other video i'll link  it here for how to deal with that but i want   to talk about the warm-up procedure specifically  the ecu uses a cold start map when it determines   that the engine tip is below 70 degrees celsius so  this is the coolant temp as measured at the head   70 degrees celsius is about 158 degrees fahrenheit  so anytime the engine is colder than that the ecu   goes into warm-up mode this adjusts ignition  timing oil injection and fuel injection   to help the bike warm up basically what it's  doing is it's richening up the mixture it's adding   more oil and more fuel this is good on an engine  that is starting out cold but this is not good   on a bike you're trying to ride it's going to  cause the bike to load up now combine that with   that other map i was telling you about where if  you're trying to ride a cold bike you're adding   throttle the ecu is basically saying i need to add  even more oil so you're getting twice as much oil   than what is necessary so the bike is really  going to load up and perform pretty terribly   because of all this extra oil and fuel the odds  of you fouling a plug are going to be much higher   so if you've ever tried to ride  a cold tpi bike you know that   the engine just doesn't like it it runs like  crap and this should be a warning to you that   you shouldn't be riding the bike yet it's  too cold these things are very cold-blooded   so here's my advice for warming up your tpi  first if the ambient temperature is below   about 50 degrees fahrenheit then use the cold  start knob the cold start knob is actually an   air bypass that allows more air into  the mixture effectively leaning it out   which helps the engine burn that extra oil and  fuel it says so right in the manual so listen to   the manual i turn the bike on with the cold start  knob and then i let it idle for a couple minutes   i actually let it idle until it reaches about  100 degrees according to my radiator tip sensor   then i disengage the cold start knob and then i  continue to let it idle normally until it reaches   about 135 fahrenheit at least on the radiator  temp sensor this will ensure that the bike is   ready to go now these bikes are pretty cold butted  this can take several several minutes for the bike   to get up to temp it's a good time to put your  gear on and get ready to go by the time you've   got all your gear on the bike should be warmed up  and ready for you to ride off now what do you do   if you don't have a temp sensor on your radiator  just go by feel if the tops of the radiators are   hot to the touch then the bike should be good to  go as well all right so while the bike was warming   up i was able to go get my gear on it should be up  to temp about now and we are ready to go right off hopefully this helps clear up some of  the misinformation that's out there   i really don't think it's a good idea to follow  some of the advice that's been put out there   and try to ride the bike immediately it's  compounding a rich condition that the ecu   is already providing to the engine and it's  just increasing your likelihood that you're   going to foul a plug now i know that works  for some people i know some people don't have   any issues with plug fouling but if you're  one of the unlucky few that does foul plugs   take a look at your warm-up procedure  and see if this might help you out so as always guys thanks for watching if you  like the content please give me a subscribe   and i hope to see out on the trails you

Channel: WA Semi-Hard Enduro

Views: 55,188

Rating: 4.915493 out of 5

Keywords: ccps, tx300i, gekkota, gopro, hero 8 black, gopro hero 8 black, extreme enduro, gummy tire, hybrid tire, oneal riders, leatt, leatt family, spy optic, spy optics, enduro, hard enduro, endurocross, ktm, husqvarna, KTM, HUSQVARNA, BETA, HONDA, YAMAHA, OFF ROAD, ENDURO, ON ANY SUNDAY, HARD ENDURO, RACING, DIRT BIKE, HOW TO, CRASH, FAIL, 300, 500, 250, TPI, XCW, SINGLE TRACK, 2 STROKE, 2T, 4T, EXC, SINGLETRACK, ADVENTURE, dirt bike, irc, ve33s, ix-09w

Id: nqwYequOV64

Length: 5min 42sec (342 seconds)

Published: Mon Jan 11 2021