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| Engineering/ Technical Ask technical questions about cars. Do you know how a car engine works? |
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#1
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4.3 sending smoke signals, need help
i had a phone call tonight from a friend that is having problems with his truck. he said it will start and run fine but then start to miss and black smoke will come out and sometimes stall. it doesn't do this all the time but is getting worse. it's a /94 chev 1/2 ton 4.3 with about 270,000 k.
any ideas? |
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#2
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Re: 4.3 sending smoke signals, need help
Tune up time
Spark plugs, spark plug wires, cap, rotor, fuel filter, air filter, injector cleaner, clean the throttle body.
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**2007 Avalanche LT. ** ![]() 6" Pro Comp lift 305/55/20 BFG A/T KO'S K&N FIPK GENII Flo Pro V force muffler & 4" slash cut stainless tips Color matched front and rear Bowties 3" polished stainless bull bar and Nerf bars |
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#3
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Re: 4.3 sending smoke signals, need help
it was a mapping sensor.
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