my 6.5 doesn't start that fast i have a strait 5 inch exhaust on it, black smoke is unburnt diesel fuel and blue is burning oil and gray is just how it is after cold and sitting for a night
sorry man but you r wrong. Black smoke is good. Normaly when your diesel is under a load the 6.5 turbo or any diesel engine for that mater will blow out black smoke. the grayish sumetimes blueish looking smoke is raw diesel being pushed through the engen when the cilinder doesn't fire. when yuor truck is blowing out the greyish smoke the easy way to tell between oil and unburnt fuel is to smell it. if it smells like diesel fuel than that is what it is. i oun a 6.5 turbo and have rebulit it
black is unburnt fuel , blue is burning oil , gray is also unburnt fuel. if your smoking blue then your burning oil. i also own a 6.5td hence my screen name
i have seen some one say black is partially burnt fuel and i think that makes sense cuz turning up the pump makes black, and its pushing more fuel through than what it can burn. and white is unburnt, blue is oil burning cuz thats what color 2 stroke motorcycles blow, and a little gray is just a cold morning start. im not saying im right but its what makes sense to me.
it wasn't all fuel prices the truck was showing some wear and tear it was on its 3rd engine and first tranny, also all the new england winters started taking their toll on the body and frame. i was also looking for a more fun car with performance
oh i gotcha. im doing basically the same thing im trading one of my 450s for a 250 two stroke cuz they are more fun and that 450 has seen better days!
If this was a cold start...then the engine just hasn't warmed up yet. If not, I'd run some fuel system cleaner through it and see if that helps at all. If it doesn't, I'd have the injectors flow tested and/or replaced.
That white smoke is caused by an injector still bein open and dumping diesel into the cylinder when you turn it off and let it sit for awhile. My truck that has the exact same engine does the exact same thing. Nothin really to worry about. Also nice exhaust system!!!
That white smoke looks like the result of leaking injectors dripping fuel in the cylinders while it sits. The average life of the 6.2/6.5L injectors is about 100K mi. If you have more than that I would reccomend replacing them. I replaced my glow plugs at the same time i did my injectors. I also have a 4" straight pipe on my truck and it dosen't smoke like that. I don't think thats condensation.
Hes got issues for sure, My 94 never blew white smoke. Always blew black smoke cuz the turbo was shot. Once the injector pump started to go you should have seen that smokey startup, the box disappeared!!
im a die hard chevy fan but i do have to say those engines suck hardcore... shoulda built direct injection right from the beginning
RCSBChevy 3 years ago
Ahh... Gotta love the IDI cold start ups... Damn incomplete combustion in the morning lol.
Camscape 3 years ago
the old Chevy diesels suck, even though Im a Chevy hater, the new diesels are better.
Patrick761 4 years ago 2
Accutally the smoke there is probely caused by bad glowplugs. Only 5 or 6 could be working and that smoke comes from the other cylinders firing up.
davidgoodwin07 4 years ago
my 6.5 doesn't start that fast i have a strait 5 inch exhaust on it, black smoke is unburnt diesel fuel and blue is burning oil and gray is just how it is after cold and sitting for a night
k2500diesel 4 years ago
sorry man but you r wrong. Black smoke is good. Normaly when your diesel is under a load the 6.5 turbo or any diesel engine for that mater will blow out black smoke. the grayish sumetimes blueish looking smoke is raw diesel being pushed through the engen when the cilinder doesn't fire. when yuor truck is blowing out the greyish smoke the easy way to tell between oil and unburnt fuel is to smell it. if it smells like diesel fuel than that is what it is. i oun a 6.5 turbo and have rebulit it
whitetiger242 2 years ago
black is unburnt fuel , blue is burning oil , gray is also unburnt fuel. if your smoking blue then your burning oil. i also own a 6.5td hence my screen name
k2500diesel 2 years ago
i have seen some one say black is partially burnt fuel and i think that makes sense cuz turning up the pump makes black, and its pushing more fuel through than what it can burn. and white is unburnt, blue is oil burning cuz thats what color 2 stroke motorcycles blow, and a little gray is just a cold morning start. im not saying im right but its what makes sense to me.
juker953 2 years ago
idk i sold my suburban last spring after fuel prices went nuts. now im rockin out a nissan 240sx
k2500diesel 2 years ago
damn where i live diesel is cheaper than gas. =)
juker953 2 years ago
it wasn't all fuel prices the truck was showing some wear and tear it was on its 3rd engine and first tranny, also all the new england winters started taking their toll on the body and frame. i was also looking for a more fun car with performance
k2500diesel 2 years ago
oh i gotcha. im doing basically the same thing im trading one of my 450s for a 250 two stroke cuz they are more fun and that 450 has seen better days!
juker953 2 years ago
If this was a cold start...then the engine just hasn't warmed up yet. If not, I'd run some fuel system cleaner through it and see if that helps at all. If it doesn't, I'd have the injectors flow tested and/or replaced.
saosurvive126 4 years ago
grey smoke could be burning oil, prob just a dribling injector, do a compression check, if ok dont worry!!
crossercoady 4 years ago
Mine does the same thing X3 it smokes alot!!! But i have changed the injectors to new and it smoked even more...
tobben330 4 years ago
My dads 6.5 does the same thing...i was told it mite be the injectors
phil662 4 years ago
What bigfoot said. Nothing to worry about, great truck.
DemoFly 4 years ago
That white smoke is caused by an injector still bein open and dumping diesel into the cylinder when you turn it off and let it sit for awhile. My truck that has the exact same engine does the exact same thing. Nothin really to worry about. Also nice exhaust system!!!
bigfootsol 4 years ago
Sounds good, do you have a muffler?
JohnFromSpace 4 years ago
it sounds great and the smoke is fine.
garthcarlson 4 years ago
The only thing it might be are your injectors. Other than that, I see/hear nothing wrong.
NJW1973 4 years ago
nothing wrong with it homie
Sackofbud 4 years ago
Sounds really nice with the bigger exhaust.
massltca 4 years ago
white smoke is antifreeze, black smoke is diesel fuel
monoxidechildx 4 years ago
My 6.5 Does the same thing when I start it up in the morning. It is just raw fuel...
Camscape 4 years ago
ur injectors and turbo in going.
350TurboDiesel 4 years ago
That white smoke looks like the result of leaking injectors dripping fuel in the cylinders while it sits. The average life of the 6.2/6.5L injectors is about 100K mi. If you have more than that I would reccomend replacing them. I replaced my glow plugs at the same time i did my injectors. I also have a 4" straight pipe on my truck and it dosen't smoke like that. I don't think thats condensation.
twistedengineering 5 years ago
how was that it must have been fun chabging those injectors. piese of shit chevy you gotta take the manifold and turbo off!
BOWTIESAREFORFAGS 4 years ago
nope, no issues just condenstaion build up inside the exhaust... alot can build up in a 4" straight pipe
396Diesel 5 years ago
Hes got issues for sure, My 94 never blew white smoke. Always blew black smoke cuz the turbo was shot. Once the injector pump started to go you should have seen that smokey startup, the box disappeared!!
UCHoover 5 years ago
I've got a 6.5L in a Suburban with 247k that doesn't smoke on start-up. Maybe I'm lucky?
westlax777 5 years ago
Diesels do that when you first start them, its just unburnt fuel
80K25 5 years ago
that a good thing or bad?
Dino679 5 years ago
What the Hell?
72duster 5 years ago
very very horny! wish I could put my crotch against it!
mollaren 5 years ago