Mechanics

"MISFIRE" CODES KEEP COMING BACK AND ENGINE WILL RUN ROUGH.

1999 Kia Sportage • 95,000 miles

Replaced spark plugs, both coil packs, and o2 sensors. Upon start up, car will run fine for a few seconds, then start to run rough. Scan and will get either #2 or #4 cyl. Misfire code.
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Dbatch
June 7, 2012.



Have you checked compression yet?

Saturntech9
Jun 7, 2012.
Checked compression, average is about 105 on each cyl. But I dont know what would be a good compression.

Tiny
Dbatch
Jun 10, 2012.
You have the 2.0L engine?If so it says compression is 188psi so that would be pretty low compression.
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Saturntech9
Jun 11, 2012.
Should I find a used head or have this one redone, problem is kind of short on cash. I had to replace the exhaust manifold, it was cracked in two spots about 3" long.

Tiny
Dbatch
Jun 11, 2012.
Since the compression is low across all the cylinders I would check the cam timing.

Saturntech9
Jun 12, 2012.

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