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  1. Rough idle during cold start, misfire (P0302) when warm, walnut blasting and injector cleaning sag

    (long post sorry,, I tried to be concise) I thought I would pass on some recent experience regarding diagnosing a rough cold start and misfire situation. I noticed that the engine was a bit rougher starting than normal (or so I thought), and started throwing a P0302 (misfire cyl #2) error code...

  2. HPFP: pressure holds @ 1600 psi during cold start for about 20 seconds

    Recently installed Autotech HPFP upgrade when doing a timing chain on my MS6 (no real mods yet, just running an Accessport Stage-1 pre-canned tune). Dissembled and cleaned everything that the instructions called for during the installation. Now upon cold start the pressure surges to 1600 psi...

  3. Timing Chain (I think) noise when hot, 60K miles after VVT replaced

    I replaced the VVT with a full OEM kit @ 49K miles due to noise at start up, and the TSB recommending the updated VVT actuator. I now have 110K and I am now getting a lot on noise when the engine heats up that I believe it is the timing chain (It sounds like a diesel engine at idle). I can...
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