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Expert: Robert Summers - 8/20/2008


Question
I been having problems with my 1998 chevy Pickup misfiring when the vehicle is cold. I have tune it up and still there is no change. So I am wondering if you may know what the problem is with my vehicle?

Answer
Hi Brian.... you will need to check on a scan tool to see which cyl is misfiring...once you know which one check the plug/wire and the cap to see if maybe you have a bad one....also check the inj pulse while the scan tool in on see if you have a fuel problem to that cyl. check codes as well. if misfire goes away once warm then check connection to the coil for corrosion...or a bad coil...hope this helps

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Robert Summers

Expertise

domestic auto/truck repair, auto body, painting. I currently own a large auto/truck/marine repair shop. 40 years certified 310S,310T,310B in ontario Canada

Experience

40 years certified 310S,310T,310B ontario qualified, 7 years with GM have owned my own shop now for the past 27 years.was automotive marketing director for large auto parts supplier.

Organizations
CFIB (current) past member AARO and APAA.

Education/Credentials
grade 12 plus 2 years college. many aftermarket training courses

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