Question about 2000 Kia Sportage

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Po303 cylinder 3 missfire kias ephira 2000 will start when cold but will not start again after shutoff please help thank you

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Get specs for fuel pressure and check it if not within specs replace pump.More than likely you have a weak fuel pump.

Posted on Apr 06, 2011

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Po1200 is not a valid code, p0303 = missfire detected on number 3 cylinder

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po303 is cylinder 3 misfire. I would start with cylinder #3 spark plug wire, look very carefully for chafed, worn or cracked spark plug wire, then check spark plug itself. If it is still acting up do a compression check on cylinder #3 to see if head gasket leaking.

If all that looks okay it may be the #3 fuel injector failure.

Read more: http://wiki.answers.com/Q/How_can_you_fix_PO303#ixzz1yD7OubjQ

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