2003 trailblazer chevy 4.2 engine

i had to spray pb blaster on my spark plugs to remove them now it is missfiring terrible does it take time for the pb to burn off


1 thought on “2003 trailblazer chevy 4.2 engine”

  1. it would be better to spray some brake wash or starting fluid and then dry it off with an air hose to dry out the PB Blaster. It can take a while to burn off, but I would double check your work if it is misfiring that bad. Make sure the end of the spark plug gap didn’t get bent shut..

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