986 Forum - The Community for Porsche Boxster & Cayman Owners - View Single Post - P0300-303 1340 Misfire

86fromCA · 07-17-2019, 08:05 AM

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!

07-17-2019, 08:05 AM	#1
86fromCA Registered User Join Date: Jul 2019 Location: CA Posts: 5	P0300-303 1340 Misfire 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!