YOUR RESEARCHP0300-303 1340 Misfire - 986 Forum - The Community for Porsche Boxster & Cayman Owners
1 matching discussions were examined; no attributable action/outcome evidence was detected. No consensus or repair conclusion is claimed.
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1 matching discussions · 5 captured posts examined · 0 partial discussions
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5 eligible posts · 0 unverified posts · 1 discussions match the subject in their title or opening post.
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Generation: 20261026T124918Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources
Can you guys help? 2002 Boxster S with 105K Have a P0300 through P0303 codes (bank 1) and P01340 with misfire at idle and low revs, then smooths at RPM, but, then I noticed a chain type noise at 2500 or so? Concerning to say the least. All happened right after I got a full tank of Shell Premium, btw. Any thoughts? Could it be chain guides on IMS ro just plugged Injectors or bad MAF....need help please!
Variocam actuator slow or failed, IMO.
Quotes source post: 599490
Are you saying Solenoid gone bad? Or the actual mechanism?
Can anyone help me on this< I got one reply that it may be Variocam Solenoid...could be, but is that all? could it just be the tensioners?
Quotes source post: 600140
No, it is not the tensioners. P1340 is very specific, it indicates that the chain on bank 1 is out of position high, which could be the VarioCam solenoid, the VarioCam unit itself, or the chain has jumped time due to pad wear. This is going to require further investigation to determine which one it is.
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