Originally Posted by philter
Pulled new spark plug from #3cyl and found everything gone, no wonder I had all the misfires. I checked 1 and 5 and those plugs looked good. Changed only 3 and cleared the codes. lean code 171 came back. Monday night I'll change all plugs and wires again and see what I get.
i changed all the plugs and wires Tuesday night and found plugs 2 and 6 in the same condition as 3 was "no electrodes" gone. Started car and still obviously missing. These are AC delco 41-101 plugs and Belden Edge wires set 700042.
I don't know yet if plugs burned out again as soon as I started the car. The car ran smooth during driving with no lag and plenty of power but still acted like it was miss-firing at idle.