Mechanics

GMC SONOMA ENGINE PROBLEM

1997 GMC Sonoma • 120,000 miles

I had a p0302 I replaced the spark plugs, the wires are realativley new. I drove the truck for a couplr days and now the same code is back. What could be causing the plug in clinder 2 to foul out like that?
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Bmase78
January 9, 2013.



Check yoru fuel pressure first and if that is ok check for a vacuum leak. What engine is it ecause fuelpressures are different

Hmac300
Jan 9, 2013.