Rough idle, stall, misfire problems.

[ahair121]

Originally Posted by upallnight

You can swap the coil with another cylinder and see if the misfire follows the coil. If not the coil is not the problem. A misfire in these modern computer controlled fuel injected engines means that the computer has determined that the cylinder is not producing as much power as the other cylinders. Could be a cylinder with low compression or a bad fuel injector that isn't providing as much fuel as the other injectors. Before throwing parts at it find out why you have a misfire. I would start with a compression test of all 8 cylinders. An engine that just sat around for over a year could have developed rust on an open valve so now you have a cylinder that isn't sealing properly so now it is down on compression.

Thank you upallnight. I will do a compression test. I am curious about the injectors especially if they've been sitting with old fuel in them. But does it mean anything that when I pull out all the plugs that all 8 are wet with fuel? It's not getting enough air right?