I have a 2000 boxster (2.7L M96 5 chain motor) with 30,000 miles on it. Recently the car began to idle rough and the Check engine Light (CEL) came on. The OBDII code was P1341 related to vario camshaft adjuster.
Pulling off the cam cover, and removing Bank 1 camshafts we found that the cam-adjuster plunger was stuck which is probably why the car was idling rough.
The larger concern was that we noticed that one bearing surface on the intake camshaft (on cylinder 3 near the chains) was very rough and worn. All bearing surfaces were very clean and smooth exempt this one (see picture).
Q1 - Anyone know what would have caused this?
Q2 Suggestions on how to fix this bearing surface on a) the head and b) the camshaft bearing cap?
Q3 - How to prevent this from happening again?
This is a weird one and need any HELP / suggestions you may have.
Camshaft Bearing damage
Threaded Mode
