W156 Misfire
MBWorld Fanatic!
Joined: Aug 2011
Posts: 5,351
Likes: 1,677
From: Kitchener, ON
2010 C63 AMG
update: Pulled bank 2 apart. Changed camshaft adjusters, cleaned and flowed injectors, replaced all coils (again), found a nose seal on the cam that was in the wrong slot. Got that fixed, everything back together. And guess what.
With brand new cam solenoids plugged in, misfire on cylinder 7 still present.
Unplug exhaust cam solenoid. Misfire goes away entirely....at this point I'm completely at a loss.
With brand new cam solenoids plugged in, misfire on cylinder 7 still present.
Unplug exhaust cam solenoid. Misfire goes away entirely....at this point I'm completely at a loss.
Newbie
Joined: Aug 2021
Posts: 1
Likes: 0
W204 C63
Following up on this thread because I'm having the same issue now. Head bolts replaced last week in 2009 C63 and now there is a small misfire around 1500 RPMs, and OBDII error reads Camshaft position, intake/left/front bank 2 - timing over-retarded". They're advising to replace the cam adjuster. Would you please let me know what ended up happening with this thread and if there was a fix? Thank you!
