986 Forum - The Community for Porsche Boxster & Cayman Owners - View Single Post

Stl-986 · 05-28-2021, 08:04 PM

easy thing would be to swap coil from cylinder 1 to anything on bank 2. clear the codes and see if it follows. If not then you know plugs & coils are good.

Next would be wiring.

Do you have a durametric? You could watch the number of misfires on each cylinder.

I would let it cool down overnight and then in the morning clear the codes, then start the engine. Does it run bad for the first 2-3 minutes or does it run good and then after 2-3 minutes run bad?

05-28-2021, 08:04 PM	#5
Stl-986 Registered User Join Date: May 2017 Posts: 1,182	easy thing would be to swap coil from cylinder 1 to anything on bank 2. clear the codes and see if it follows. If not then you know plugs & coils are good. Next would be wiring. Do you have a durametric? You could watch the number of misfires on each cylinder. I would let it cool down overnight and then in the morning clear the codes, then start the engine. Does it run bad for the first 2-3 minutes or does it run good and then after 2-3 minutes run bad? __________________ 2000 Boxster Tiptronic 2003 Boxster 2003 996 C2 Cab 2002 996 (SOLD) 1986 944 (gone but missed)