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engine diagnosis

  1. 1.8 / 1.8T Engines
    I have a 06 VW GTI 1.8T that I've been having some issues with as far as the P300 codes. All four continually pop up every week. I've changed the spark plugs, coil packs, and just got a oil change and changed the fuel filter. I just went to get my yearly inspection and failed for emissions. The...
  2. MKIV GTI
    after getting 3 cylinder misfire codes and a p0340( the engine also sounded different) i tried the coilpack test by spraying water on the coilpack and seeing if it was cracked. i started the car and saw the coilpack sparking so i took it off and put a layer of JBweld on it. now the car still...
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