1997 Kia Sportage engine/emission

GLIMMERMYST3

MEMBER
1997 KIA SPORTAGE
145,000 MILES

I have a 1997 kia sportage 2.0 with dual over head cams. I have replaced the o2 sensor wires plugs new coil packs checked the timing and made sure the bekt us not loose abd no teeth were broken or missing. The engine is still using alot of fueland barley runs at an idle at or below 1000 rpm we hqve tried to idle it up to 1200 rpm but iit us still missing and sputtering at an idke and breaking up at 45-50 mph. Plz help! I'm desperately trying to figure this out. 7272373452

Saturday, June 8th, 2013 AT 12:50 PM

3 Replies

KHLOW2008

MECHANIC
41,814 POSTS

Are there any trouble codes?
Did you check the compression?
Do you have coolant losses/overheating issues?

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Sunday, June 9th, 2013 AT 1:53 AM

GLIMMERMYST3

MEMBER
2 POSTS

There wad an over heating issue but we replaced the fan motorvand thermostat and that fixed that. After. We fixed that is ehen it started messing up. I don't know the exact fides but it threw a miss fire in 1&2. We replaced the plugs wures n coil pack. Not fixing the problems.

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Sunday, June 9th, 2013 AT 2:54 AM

KHLOW2008

MECHANIC
41,814 POSTS

I need to know the codes.

If the problem was not there prior to overheating, you could have damaged the cylinder head gasket causing losses of compression to certain cylinders.

Have a leak down pressure test done to confirm if head gasket is good.

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Sunday, June 9th, 2013 AT 5:33 AM