Code P303 misfiring and engine light is on

Tiny
SPLAY123
  • MEMBER
  • 2008 SEAT IBIZA
  • 1.2L
  • 3 CYL
  • FWD
  • MANUAL
  • 55,000 MILES
I have a reoccurring problem with my engine light appearing causing my car to lack in power, misfire continuously and eventually causes my car to come to a complete stop. I then turn off the car turn it back on. The engine light goes and car works okay with a slight misfire.I diagnosed my car finding P303-cylinder three misfire. Changed all the spark plugs and the cylinder three ignition coil. I am still getting the engine light coming on and causing my car to run really bad whilst the engine light is on, but when I turn off the car and back on the engine light goes and the car runs fine with a slight misfire. Can you please help me?
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Friday, December 30th, 2016 AT 6:08 PM

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Tiny
STEVE W.
  • EXPERT
Do not have any information on that vehicle, but I would see if you can swap the fuel injector from one of the other cylinders and see if the mis follows it. If it does you have a bad injector.
If not then you will want to try a compression test to make sure it is not something in the engine mechanically wrong.

https://www.2carpros.com/articles/how-to-test-engine-compression
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Saturday, December 31st, 2016 AT 1:08 AM

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