Rough idle, stall, misfire problems.

[upallnight]

Originally Posted by ahair121

I cleared codes and swapped the coils tonight, but the same code persists. I have a few questions. In my OBD reader the MAF shouldn't read a steady 10 g/s right? Also if the MAF was bad the engine should still be able to run without stalling after a minute or so?

Since the misfire code is still in the same cylinder after the swap, the next thing to do will be to look at the plug and do a compression test. What type of scanner are you using? Are you sure the unit for the MAF is set for G/S and not lb/M?

[ahair121]

Originally Posted by upallnight

Since the misfire code is still in the same cylinder after the swap, the next thing to do will be to look at the plug and do a compression test. What type of scanner are you using? Are you sure the unit for the MAF is set for G/S and not lb/M?

So I rented a compression test kit from O'Reilly's. They warned me that it might not work because the last guy had problems. What I found was cylinder 1&3 showed no compression at all and the spark plugs were clean. 5&6 held 30 psi and the tip of the plugs were dark with wet fuel.

I need to try again with a reliable kit, but is this adding up to stuck valves or something else?