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bart70 07-01-2008, 09:49 PM Seem to get a slight puff of white/grey smoke at idle after pulling trailer. Not so much after ordinary driving more so after pulling or lugging hard. Had injectors replaced and rechecked after everything comes back normal. Tech is stumped as to wy this is happing. Any suggestions would be great. Truck is 2002 with 93250 miles on it 4" exhaust and tech seems to think it is powered up some how but not sure how it would have been done. thank you cumminstrokethi 07-02-2008, 09:53 AM by "powered up", do you mean a programmer already in the ecm? The only way to know if that's the problem, is to have the ecm reflashed. 79chevyK10 07-02-2008, 03:12 PM How many miles ago did you get the injectors replaced?? Sounds like injector problems to me. bart70 07-02-2008, 04:27 PM by "powered up", do you mean a programmer already in the ecm? The only way to know if that's the problem, is to have the ecm reflashed. I believe the tech thinks its been powered up in the computer system. | ||