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Intermittant misfire Audi A3 1.8T (1999)

I have this intermittant misfire on my Audi A3 1.8T (1999) . Engine momentarily loses power - can occur when cold, hot, under load or idling. Taken it to 3 garages, one an independent Audi/VW specialist and nobody can identify the problem. No codes appear on the diagnostic log and there are no warning lights. New spak plugs and Air mass flow meter have made no difference. Any ideas?

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Sounds like carbon build-up in the cylinders. Take it and have it put on a machine called a "Motor-Vac"

Posted on Jan 28, 2009

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