Quote:
Originally Posted by bavarianride
Were the photos taken with the intake manifold removed, or the mechanic was able to snake in borescope with a few simple steps?
Honestly@73k miles and 6 years, your intake valves look relatively clean.
Did the mechanic say u need walnut blasting due to rough idle or something?
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Photos were taken with the intake manifold removed. I have an issue at random times where the idle fluctuates very badly almost like the car is going to stall at start up.
Mechanic ran diagnostics and everything checked out except one time fault on cylinder 2. Mechanic wanted to verify it wasn't due to carbon build up on the valves. Still having him walnut blast it as a maintenance item; only would've saved .8 hours of labor if he didn't clean them.
Quote:
Originally Posted by sspade
I agree... valves look fine at 75k miles.
Ever ran a catch can?
I thought the N55 was more prone to carbon buildup due to DI.
Wonder what an N20 with this mileage looks like.
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Never ran a catch can.