Engine Performance problem
2003 GMC Envoy 6 cyl All Wheel Drive Automatic 72,000 miles
I just changed my spark plugs on my 2003 Envoy and have had a rough idle and low power under a load. I thought maybe I had over torqued the plugs, so I re-torqued them and checked all the spark plug boot connections. What can be wrong, and how can I check? Is it ok to remove and re-install plugs? Also, when it idles with the AC on, I hear a chirp. Could I have a bad plug? Damaged threads? I can't see any signs of a problem when I look at the plugs. This used to be so simple in the old days.
have the same problem?
Friday, September 11th, 2009 AT 1:50 AM