mil light on missfire all rpm what trouble to look for other than plugs has 75k on 2005 Chevrolet Trailblazer

no problems up to now

by in Victorville, CA on May 20, 2012
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1 answer 2 comments
ANSWER by , May 21, 2012
Plug wires or boots open the hood at night or in the dark. Start the car and see if any spark is going out the side of the wires
COMMENT by , May 22, 2012
Thanks, but this engine has the coils on top of plugs no plug wires.
COMMENT by , May 22, 2012
yes they are also called boots. If you ck each one and make sure there are no "hot spots" or burn marks on the boot. you will not be able to see them arc