I have a 1996 s10 2.2 liter that Ive changed fuel filter & plugs about month ago cause of sputtering and hesitation. The plugs were rusty looking. I put new plugs in 3 days ago andthey r rusty. Why?
Maybe there was still some rust in the plug hole...? Maybe there is condensation around the plug hole...? Worst scenario, you may have a cracked block..! Check your oil to see if it looks clear and clean.... Is the truck running ok with the new spark plugs ? Let us know, ok?
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