Help: where to insert hose for CRC intake/valve cleaner
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Senior Member
Joined: Aug 2010
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From: Virginia, USA
2005 c230
Help: where to insert hose for CRC intake/valve cleaner
Would like to use the CRC brand valve intake cleaner on my 2006 E55. Instructions say to insert the skinny hose of the can of cleaner past the MAF sensor, so that the CRC cleaner does not foul/damage the maf sensor. But it appears the 55 engine on the W-2 11 has no MAF sensor? Is there another sensor that potentially could be damaged by this cleaner? Does anyone know specifically where I should insert the hose of this cleaner to begin the cleaning process?
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From: Christchurch, New Zealand
CLS55
We have a map sensor after the supercharger before the surge tank starts. What is this crc meant to do? clean your throttlebody? Using cleaner on supercharger might ruin the grease on some bearings..
Thread Starter
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From: Virginia, USA
2005 c230
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From: Miami, FL
2003 CL 600
What do you think the cleaner is going to do for you? The injectors normally spray the valves with gas in these cars, and there's not going to be heavy buildup on them as a result. On a DI motor, it's a different story, but in most cases on port injected cars, any type of 'valve cleaning' is simply lightening your wallet, and nothing more.
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From: Virginia, USA
2005 c230
Thanks. Been tracking down source of slight non smooth idle. Ruled out filters, vacuum leaks, o2 sensors, etc. Car has been fed diet of non Top Tier gas for three years, so not confident that the insufficient detergents in that gas has kept the valves free on carbon buikdup. And I’m willing to risk $10 on the highly rated CRC product.
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From: Miami, FL
2003 CL 600
Would love to see borescope pictures of the valves before/after. Any gas has plenty of solvent qualities. There may be deposits in places, but enough to choke the valves, not very likely.
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From: Tampa Bay, FL
05 E55, 98 CLK320
Spray it on a clean lint free towel and use the towel to wipe down your throttle body.
Don't spray that inside your throttle body.
With your other hand hold the flap open, and so on, then go to the other side of the car and repeat. Remember you can open your hood even further up, look up how (there's a little latch you have to press on the driver side hinge) and it will help you reach in there.
Don't spray that inside your throttle body.
With your other hand hold the flap open, and so on, then go to the other side of the car and repeat. Remember you can open your hood even further up, look up how (there's a little latch you have to press on the driver side hinge) and it will help you reach in there.
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From: Virginia, USA
2005 c230
but the goal is for the cleaner to get to the intake valves, in which case, the engine needs to be running and the cleaner needs to enter the intake. CRC makes a dedicated throttle body cleaner for what you describe
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From: Tampa Bay, FL
05 E55, 98 CLK320
Then go get a BG intake cleaning service done with those pressurized injectors at a shop. Otherwise spraying CRC might or might not lead to hydrolock, I'm not sure. I just stick to cleaning the throttle body and fuel system cleaner.
For stumbles, I would recommend these fuel system cleaners:
Gumout One N Done (one big bottle, this is the strongest cleaner), Red Line (my favorite), BG 44k (legit stuff), Techron big black bottle (this one is the weakest)
Pour one in the tank, then fill with gas, drive your car HARD. The rest of the stuff is uncleanable. Mine used to run like shiet at idle, after a couple rounds of cleaner it is nice and smooth. You should be running a fuel system cleaner with every oil change, these cars go though a lot of gas.
For stumbles, I would recommend these fuel system cleaners:
Gumout One N Done (one big bottle, this is the strongest cleaner), Red Line (my favorite), BG 44k (legit stuff), Techron big black bottle (this one is the weakest)
Pour one in the tank, then fill with gas, drive your car HARD. The rest of the stuff is uncleanable. Mine used to run like shiet at idle, after a couple rounds of cleaner it is nice and smooth. You should be running a fuel system cleaner with every oil change, these cars go though a lot of gas.
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From: Virginia, USA
2005 c230
Thats just it. The CRC cleaner (and method of cleaning) is reviewed to be just as effective at cleaning the intake (including valves) as the more expensive shop (BG) methods, and far more effective than fuel additives (which get diluted with the fuel).
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From: Tampa Bay, FL
05 E55, 98 CLK320
By all means, try it, but you're on your own, because not a single person here has probably done it. You won't find a whole lot of allies on this forum for additives, but let us know how it goes, preferably make a video or a few pictures and post instructions on how it's done.
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From: Portland, Oregon
2019 Jeep Trackhawk, 2002 CLK55, 2014 911 Carrera
You are correct that the E55 has no MAF sensor. You can follow CRC's directions by removing the airboxes and Y-pipe from the throttle body and spraying it directly into the TB. I will be very surprised if it makes a difference, but who knows.
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From: Virginia
N/A
Thanks. Been tracking down source of slight non smooth idle. Ruled out filters, vacuum leaks, o2 sensors, etc. Car has been fed diet of non Top Tier gas for three years, so not confident that the insufficient detergents in that gas has kept the valves free on carbon buikdup. And I’m willing to risk $10 on the highly rated CRC product.
Thread Starter
Senior Member
Joined: Aug 2010
Posts: 329
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From: Virginia, USA
2005 c230
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From: Virginia
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From: DownEast Maine
CLS 55 AMG E500 ML320
I'd be afraid that anything strong enough to clean carbon off the valves by spraying, would be strong enough to rinse the oil off the cylinders. No data, just my thoughts.
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Joined: Dec 2015
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From: NYC
06 E55 Bea55t(gone) 03 Sl55 Mon55ter, 07 S550
I ran seafoam in my intake via the vacuum line and had no I'll affect. I've run seafoam in all of my cars newer 2000+ and old (1987 560sec).
I found the results on my Sl55 to be okay. The car indeed idled smoother but, the procedure of adding seafoam to the supercharged motor kind of leaves fluid pooled up in the blower I feel like.
I added it from the vacuum line that leads right behind the throttle body.
You can use this intake valve cleaner the same way. Or wait until you pull the blower off and shoot a squirt onto the intake valves from the runner. (Which I also did.)
I can email a video to who ever would like and see the smoke show.
I found the results on my Sl55 to be okay. The car indeed idled smoother but, the procedure of adding seafoam to the supercharged motor kind of leaves fluid pooled up in the blower I feel like.
I added it from the vacuum line that leads right behind the throttle body.
You can use this intake valve cleaner the same way. Or wait until you pull the blower off and shoot a squirt onto the intake valves from the runner. (Which I also did.)
I can email a video to who ever would like and see the smoke show.
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From: DownEast Maine
CLS 55 AMG E500 ML320
I know for a fact that the rear supercharger bearings have covers not seals, and intake air and fine grit from high flow filters (k&n) gets in there. I wouldn't want to dissolve what's left of the grease with cleaning chemicals. Without maintenance the SC has a finite lifespan as it is
