Finally got the valves cleaned up, last of the maintenance items done since buying the car a year ago.

Before and after at 62k.. For some reason I only got pictures for 2 of the 6

 

Just did some valves myself, I hate doing it, every time...

This was one the replacement engine I sourced from a 2011 335is w/ 35k.

Evan

 

well my pics suck..

Such a difference in driving the car, glad it's done along with new plugs, mine had the originals in it still.

 

I cheated, my engine was out of the wagon and on a stand.

 

goodness gracious usc, that is a TON of carbon buildup for 35K miles. ive taken apart older BMW engines with 200K+ that dont have carbon buildup like that. i guess thats just the nature of modern FI BMW engines? what method/products did you use to clean them up so well?

 

Honestly, pretty average for the mileage from what I have seen on the N54 platform. From what I gather it is a direct injection issue rather than forced induction. Any way you slice it, it's pretty annoying.

Evan

 

Hi This is what I have done so far. OEM M5 front to the back.
Next mods on the list will be intercooler, downpipe.

 

I approve.

 

Thank you Evan for your patient to answer all my question"S"!

 

Bad ass!