86 6.2 smokes a lot and sputters under acceleration and at idle
got an 86 k5 with 6.2 and it starts really easy just runs reall choppy and puffs out quite a bit of white smoke and doesnt go away, havent checked the glow plugs or anything and its misses or sputters under moderate acceleration and high rpms had this truck a week and its my first diesel has 175k miles on it, any ideas?:humm:
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i'd say the piston rings are worn out. mine runs good but white/blue smokes alot. Alot of blowby.
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its not blue smoke, it smells like diesel but it might be a mix, what is blowby?
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cylinder compression blowing by the piston rings into the crankcase.
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could be leaky injectors, or a bad head gasket/head.
how much white smoke on start up? |
it smokes quite a bit at startup but once it gets warmed up its not so bad but still does a little and it doesnt smell like coolant just like raw fuel. And the truck runs at about 150 F when its fully warmed up. i notice that is smokes mainly when i let off the throttle while driving and its got true dual exhaust and both sides smoke
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sounds like a head gasket issue, how is the coolant? how is the oil?
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the oil didnt have any water in it that i could tell when i changed it which was saturday and it doesnt leak or use any oil that i could tell. but i will check the coolant level tomorrow after duty if i get a chance
---AutoMerged DoublePost--- what about advancing the injection pump a little bit? not sure how this could have got out of time at all, i looked and the marks lined up but maybe the chain stretched. like i said im new to diesel and it comes out of both exhaust pipes so i hope both head gaskets arent bad :argh: |
if you have access or experience in trucks, you can do a compression test.
if not, bring it somewhere and have them do it. or, take the glow plugs out and se if coolant pees out of the hole |
my truck ran exactly the same as you describe yours runs. i advanced my injection pump timing and turned the fuel screw in a smidge and it has virtually quit smoking.a few puffs randomly as it idles and thats it
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