Mechanics

INTERMITTENT MISFIRE CODES, HELP!

1997 Kia Sportage • 13,300 miles

1997 Kia Sportage 4X4 2.0 is having intermittent misfire code PO302. Replaced wires, coil packs, spark plugs and camshaft sensor. Vehicle runs fine until parked for a short time. When restarted, it misfires again. What could it be?
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T avery
October 15, 2011.



You need to check compression, plug, coil, vacuum leaks around the cylinder and lastly, the injector.

Roy

ASEMaster6371
Oct 15, 2011.
Thank you for the info. What would be an inexpensive and back yard way to check the injectors?

Tiny
T avery
Oct 17, 2011.
Remove the rail with all 4 attached and see if they hold fuel pressure with the key on.

With the rail away from the engine, crank the motor and see if they spray fuel in a nice pattern. The crank sensor signal is what triggers the injectors.

Roy

ASEMaster6371
Oct 18, 2011.