huge smoke out the exhaust pipe - need ideas
i guess to begin, the suspect in question is a 95, 2wd ext cab dually. with only 132k on what was a strong running motor. there are ABSOLUTELY no real power adders other than that huge napa open element air filter and a straight piped exhaust. no tuners or crazy mods other than a slight bump in fuel pressure via a CA spec FPR spring.
so while driving on the highway 2 weeks ago, out of nowhere i noticed that ABSOLUTE HUGE amounts of gray (grey?) smoke was pouring out of my tail pipe. i honestly didnt even realize till i noticed all the traffic backing away from me. pulled over to check, seemed to be running decent enough, so i continued onto my sisters house that was only about 4 miles away. being late at nite and far from home - i felt that was the best choice.
made it to her house - truck continued to pour massive smoke from the tail pipe, and just didnt sound right.stranded i stayed the night, and the next morning i went out - no leaks, nothing seemed out of order . it started right up and seemed to run ok. not much smoke at idle. as soon as i gave it gas, it turned into a smoke machine. being as far from home as i was, and not wanting to starting leave any stains in the street in front of my sisters house, i had it towed to a local shop that does NOT specialize in diesels, although this guy does have a 7.3 of his own and does work on them on occasion. i live in jersey and there are like NO diesel mechanics around here. (IF THERES ANY DIESEL GUYS THAT WANNA MAKE A KILLING, OPEN A DIESEL PLACE IN MOMOUTH COUNTY NEW JERSEY) 2 weeks later i still dont have an answer. when i left it for the tow truck, it started right up and would run - now it seems they cant even get it started - but im willing to bet its an unrelated issue like low oil level (yes i have a leak or 2) or one of the guys flipped the tank selector switch to my rear tank which has no fuel since it leaks - and as luck would have it, the front tank's level sensor doesnt work, so it reads empty even though theres fuel in it.. i left a note explaining all this in the truck to try and makes things easy but you know how that goes. - BUT ANYWAY.
I have a feeling ill be getting this truck back with nothing being done. so far, i feel it could be injector o rings from what ive read online, and since its such a common issue with these motors. everything else has always wound up being stupid little parts thats go, unless anyone else has some suggestions. can anyone give me some tips on what to look for to narrow things down? im trying my best to convince myself its not a really serious issue, as it all happened so quick..
if truck comes back, i plan to first drain the fuel bowl, and check the color of the filter element- thinking that it will be black if the fuel and oil are mixing from bad injector orings. past that , and if the element looks clean im not sure what to do. the smoke was def not white - so im thinking its not coolant buring. the first thing that came to mind when i smelled the fumes was that it smelled like a 2 stroke, so in my head im thinking oil, but dont know if fuel would cause something similar.
there was no oil dripping from tail pipe, so im guessing that would help rule out oil being dumped into the turbo. there was no noticable knock in the engine, so im also HOPING that means an injector is not stuck open.. i know i should check for fuel in the coolant, or oil in the coolant. past that im not sure where to go.. there was no CEL, and i dont have a compression tester. is there any real chance it could be something catastrophic?? would piston rings just go out of nowhere instead of there being a gradual decline? this truck gets regular maintence and for the most part anything that goes is fixed immediately. it leaks here and there, and i have one real oil leak that im so pissed off about ( dipstick flange) i have been ignoring trying to fix it again. this would account for a low oil level to begin with, and as its one thing ive ignored. this may help account for the no start since the guy said he didnt check for that. its always been a sloid running truck, and only has 132k on the motor. im really hoping this isnt a serious issue.
PLEASE HELP. any good info will be passed along to this mechanic first. links to instructions/ video's / write up's greatly appreciated. thanks in advance
Last edited by kctyphoon; 07-03-2012 at 08:52 PM.