Question about 2000 Kia Sportage

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Rough idle why is it idling rough? You keep giving me answers to other models I don't have. I need answer for this model.

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Hello Patricia. Their are several common problems with this year Sportage that makes it run rough. The most common problem is clogged fuel injectors caused by a rusty gas tank. Their is a recall for this concern but even if the vehicle already had the gas tank and fuel injectors replaced that does not mean you do not have the problem as the replacement gas tanks also rust out. to check for this you should remove the fuel filter and drain the gas out of it into a clear container. Blow thru the outlet so unfiltered fuel is drained into the container. If the fuel is rusty you will need to replace the fuel tank,filter and injectors and then flush out all the fuel lines. Another common problem causing a rough idle with this year is the camshaft timing being incorrect. This is caused by a loose timing belt or sometimes the keyway on the crankshaft breaks so the crankshaft sprocket turns on the shaft. This means that when the timing marks for TDC cylinder 1 are lined up everything looks good but in reality the sprocket is lined up but the crankshaft is not at true TDC. I think their may be a TSB for this. Dont forget to also look for vacuum leaks. If the problem started after spark plugs where replaced you may want to check for a disconnected vacuum line at the rear of the manifold. The manifold comes off to replace the spark plugs and it is very common that the technician forgets to put this vacuum line back on. Hope this helps.

Posted on May 08, 2014

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