2000 Chevy Silverado V8 Four Wheel Drive Automatic 65000 miles
engine is misfiring on #2 and #7 cyl at idle
So far I have checked compression 155 & 160
switched coil, plug wire, plug and injector
Checked fuel pressure 55-60 psi
Checked for plugged exhaust
Changed both rear o2 sensors
Compared all scanner data with another truck that is known to be operating properly
The only difference noted being bank#2 sensor#2 is staying down around 100-200 mv
At 1 point there was a map sensor code
I suspected a possible cracked or leaking upper intake
but when I called the dealer they told me they had never sold one or even priced one before
I'm running out of things to check.
Does anyone have any more ideas?
Thanks in advance
Wednesday, January 23rd, 2008 AT 8:25 PM