My 04 jetta 1.8T is having random missfire's . first the check engine light came on. after I started it up after work and it was ideling funny and started bucking and the engine light came on.?? its this the spark plugs or what? How much will this cost me??
Running lean on bank 1... is your Oxygen Sensor, which is mounted on the exhaust system...Now as for the misfiring, pull out all of you coils, and check the coil and the boot, for white spots..It may have a short, and the electricity is jumping around, and causing it to misfire...
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