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Long story short I was pushing this platform to the max staying na and running alot ot timing and great flow numbers. I think I was seeing 430-440gs/sec on my final setup.
The car was running strong and then one day I heard a really bad noise and days later was seeing blue smoke out the pass side exh.
I started taking everything apart and took all my mods off to get the car back to stock and see what the dealer said as I still have some warranty left.
I had 2 dealers tell me it's fine and compression is good and I figured they didnt scope it and did it myself. I saw this cylinder and it's the one that would misfire from time to time and thought the motor was f*ucked.
I took the manifold off and cleaned it as it was full of oil and that was my smoke issues and the car has been smoke free for a few months now.
I decided to run a few bottles of gunk cleaner in the gas and didnt bother with it until now as I was just waiting for the car to fail and literally driving it hard to get it to fail so I could rebuild or see what the warranty would cover.
fast forward now and decided to look at the cylinder and its fine now.it was carbon and not gouged like I thought it was.
it sucks because I sold my whole setup for 2200 bucks and I'm trying to buy it back off the kid as I type this.
I had something sort of similar with my E55 a few years ago. The oil level sensor played up and told me I had nothing in there....I ended up adding too much and then had it drained out again. I remember smoke, but not misfires.
These cars definitely need a catch can.i still cant believe that my car was miss firing from oil in the intake manifold.
The scope is a China amazon cell phone scope.it was kinda shady as you have to go to a web site and download the software for it and side load it as the app is not in the playstore.
All things considered good catch though....I posted pics of the inside of my intake years ago on here showing how FULL of oil and sludge it was....but others post pics of spotless runners
I ran another bottle of gumout and techron in the tank and it's looking alot bettter! After this tank of normal gas I will run bk44k fuel cleaner as they say it's the best out there.
Thank you much...I'll post pics here when I scope mine this afternoon (changing plugs today anyway)
As for cleaning I have always used the seafoam method where you sip from the can with the brake booster vacuum hose until half the can is gone. Then you BURY the hose so that it chokes out the engine and a huge plug of Seafoam covers and coats the entire upper drivetrain(including most cylinders as intake valves should be partially open while it's choking out), pour whats left in the can in the tank. Let it sit as is for an hour or so then crank it up and beat the **** out of it for about 5min...it will smoke like a forest fire but the smoke is all the schmutz burning out. Whenever I've done this in the past and scoped after it has always been BEYOND amazing, I mean nearly spotless.
But I promise I'm currently Googling the products you referenced!!!!
Don't get super intense with the fuel additives because they're corrosive and can affect the fuel tank. Also the "additives" in the exhaust gases which are a result of the cleanings can fog the oxygen sensors, coat them and make them less responsive.
Some gum can travel to the injectors and make those less responsive too.
2012 P31 C63 Coupe Trackrat, 2019 GLE63S Coupe Beast
Nice bro. I did those Sikky spacers when I did the 82mm TBs. But that tape is next level stuff. Don’t forget to do the lower air boxes too...
BTW, did you just follow the standard torque process for the IM TTY bolts? I have some weird codes I’m tracking down, and have a feeling that the IM bolts have loosened. I don’t think the torque process is sufficient with the spacer in there. Was considering replacing with studs.
08-05-2018, 05:05 PM
