05-05-15, 10:38 PM
Have you checked the resistance on your plug caps? I had a similar thing on my 02 foyeye, would run no problem except under load but if you got past the 3 cylinder firing and popping, it would kick in and all ok, was worse in winter, I had 2 caps higher resistance, one twice the book value, higher resistance, less spark, poorer running, esp under load, the fuel mix would be too much for the spark. Worth a check.