N54 valves caked with carbon

[geared]

aint nothing wrong with seafoam IMO....I think it works when used properly, and not too often.

While you may be able to hydro-lock the engine with seafoam - its tough and you'd probably need to add unreasonably too much to do so, as its a pure petroleum based product.

jb

[lastMleft]

Originally Posted by Angerman

Varies...usually in the $600-900 range if BMW does it. Maybe cheaper if you can find a performance shop that can do it

That's not too bad, better then the inspection 2 on my old e46m, thanks for the info!

[n54door]

Originally Posted by geared

aint nothing wrong with seafoam IMO....I think it works when used properly, and not too often.

While you may be able to hydro-lock the engine with seafoam - its tough and you'd probably need to add unreasonably too much to do so, as its a pure petroleum based product.

jb

Seafoam does abosolutely NOTHING to remove the deposits from the N54 valves. It has been proven over and over in other threads, with before/after photos.

[ShocknAwe]

Yup, seafoam is a waste of time on straight DI engines. There needs to be some kind of port injection for it to do anything for your valves.

IM and throttle body would be a different issue though unless I'm mistaken if you spray it into the intake piping.

[tanik310]

So my SA called me and told me that they are going to be putting a new transmission in to my car and it will just cost me the $50 deductible.
I asked him about the carbon buildup and he offered to have me do a ~$450 "flush with chemicals" that would supposedly help.

I find this to be very odd, and am slightly worried now.

[geared]

not my car.....

[geared]

the flush with chemicals is essentially seafoaming the car - lol to the fact they charge 450 for that

[1911A145]

Originally Posted by geared

the flush with chemicals is essentially seafoaming the car - lol to the fact they charge 450 for that

What's even more funny(or sad) is that a few BMW techs and service advisors didnt even know what DI was and tried selling me on the cleaner until I had to pull the service manager in and have the educated on it and stop scamming customers for a service that did nothing.

[SlickShift]

Originally Posted by 1911A145

What's even more funny(or sad) is that a few BMW techs and service advisors didnt even know what DI was and tried selling me on the cleaner until I had to pull the service manager in and have the educated on it and stop scamming customers for a service that did nothing.

I had to do the same thing. My service adviser was trying to tell me a fuel system cleaner would clean the valves. I had to educate him on how a direct injection engine worked.

[CGMike]

I wonder if you were to buy the seafoam spray or mopar combustion chamber cleaner sprayed into the throttle body would help? Or spraying it into the intake every oil change or so? I might try it on my car soon and see what happens.

[MRWILT]

Originally Posted by ragingpanda

Best call your dealership and ask. Mine would not do it under CPO warranty, so I had to do it elsewhere.

Same here, dealerhsip said it needed walnut blasting and wanted $1200 for it. I have a CPO and it was not covered no matter how much i BI$ched and Complained. I found a guy in Houston thats doing mine for $350. so its worth looking around before you bight the proverbial dealership bullet.

GOOD LUCK