Question about Porsche Cayenne

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We have a porsche cayyne turbo s which is a 2006 model and it has been gas converted and has only done 600miles since and is now running rough and is saying it is miss firing on clynider 3 what do you think this could be as it's total mileage is only 16000

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  • yadayada
    yadayada Aug 04, 2010

    a burnt valve is common with this type of conversion, but if u can afford this SUV u can afford a professional to diagnosethis.

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Only certain things can cause a miss only on one cylinder . faulty spark plug, faulty fuel injector, faulty coil, vacuum leak on intake manifold (plennum), valve issue, or head gasket issue. Being a low milage car would I would suspect possibly a clogged fuel injector or the spark plug.
The purpose of using a diagnostic scanner is one would be ableto rule out most of the possibilities looking at the data.

All you can do is replace or rotate the spark plug to see if the code folllows the plug and add some chevron techron fuel injector cleaner. Also use chevron 89 or 91 for a rew tanks because the fuel cleaner in thier fuel seems to be the best option for cleaning injectors and keeping them clean.

Posted on Aug 04, 2010

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