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

1999 Kia Sportage

Tiny

Dbatch

June, 7, 2012 AT 12:30 AM

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.

FOUND 4561 RELATED QUESTIONS

Running Rough

27 ANSWERS
34 IMAGES

Idles Rough/changed Ects

37 ANSWERS
3 IMAGES

5 Answers

Tiny

saturntech9

June, 7, 2012 AT 1:14 AM

Have you checked compression yet?

Tiny

Dbatch

June, 10, 2012 AT 1:13 PM

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

Tiny

saturntech9

June, 11, 2012 AT 7:16 PM

You have the 2.0L engine?If so it says compression is 188psi so that would be pretty low compression.

Tiny

Dbatch

June, 11, 2012 AT 9:36 PM

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

saturntech9

June, 12, 2012 AT 1:05 AM

Since the compression is low across all the cylinders I would check the cam timing.

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