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Why my 94 gmc truck won't idle and blows black smoke at start up?
Wiki User
∙ 11y ago
sounds like the oxygen sensor is bad
if you have the vortech engine it sounds like the central fuel injector is bad. its one main injector with 8 spider like tubes that go to each cylinder not a cheap job make sure they use a delco part not aftermarket they also have to change two fuel supply hoses it happens to all vortechs 80000+ miles when you start it it paints black carbon circles on your driveway get it done or you will ruin the engine smell your dipstick it smells like gas change oil when job is done email me for more help if you need g
Wiki User
∙ 11y ago
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Why does my truck skip and pop on one side and blows black smoke??
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buy a cummins
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No. Black smoke is created when your truck is running Rich meaning that you are getting to much fuel the black smoke is just simply unburned fuel
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possibly needs a new carborator
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What kind of solvent?
Why is there black smoke shooting out of the exhaust pipe in a 2004 F-250 Powerstroke Diesel?
It is completely normal for a diesel to smoke black. But, if it just now started to smoke black and everything on the truck is stock, go get it checked out by a mechanic. You could have bad fuel injectors or a dirty air filter. Start with the simple stuff first. And, I'd say from it being a 2004 Powerstroke 6.0L, that your injectors are probably bad.
Why does your truck have black smoke coming from the exhaust?
Could be a diesel? If not then replace your oxygen sensor on your exhaust. A bad oxygen sensor causes the exhaust smoke to be dark in color.
Why does your truck blow blue smoke?
your truck blue smoke when it burns oil, or transmission fluid.
What causes a 1990 dodge Dakota to smoke when you start it?
valve seals. Can be replaced with engine in truck & heads do not have to be removed.
Why does a 1985 Nissan truck smoke at start?
if its white smoke ,it could be ablown head gasket,if its black smoke, its your carb. running rich,or your piston rings are bad,on mine my 2 front plugs kept getting oil on them.head was good but rings were bad,got a reman.. from jasper and put a webber 32/36 and its so bad now...
Why would your Ford F350 Turbo Diesel truck have black smoke coming from tailpipe?
it can be unburned fuel damaged turbo charger etc. light amount of smoke can be normal large amounts = problem.
How do you know if you need to replace a head gasket on a 1998 Chevy s10?
Start your truck cold. If a lot of white smoke blows out that is a slight indication, but not always. Pull out your spark plugs on the side you think you have blown and see if water pours out, if water comes out from the spark plug hole, then yes. You've blown a head gasket.
