Carbon cleaning?

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Jul 22, 2004
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Memphis, TN
What has everyone found to work the best on cleaning carbon/blow-by products? I'm pulling my upper intake manifold off tomoorow, and due to the long and bendie intake runners, most of it is in-accesible with a brush. I've heard: Carb cleaner Oven cleaner Lacquer thinner Your ideas? TIA
 
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May 21, 2003
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Last year I pulled the throttle body + intake from one of our F250 trucks (~96K miles) because of an intake leak. I bought a couple spray cans of the house brand throttle body cleaner at Autozone and it cleaned things up like new on both the intake and t/b. I was realy shocked at how good it worked, but maybe most brands of t/b cleaner would have worked just as well. All the brown / black on the t/b washed away after a couple rinse/soak cycles and the intake only required minor scrubbing with a brush.
 
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I'd try laquer thinner or tolulene, both are relatively cheap. oven cleaner can do nasty things to aluminum if left on too long altough it probably will remove carbon.
 

mjo

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Jun 6, 2004
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Michigan
buy a gallon of acetone. Try blocking off the passages with a couple of pieces of sheet metal and let it sit for a day.
 
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A spray bottle of FP60 heated in a warm/hot water bath and sprayed onto the throttle body melted off the carbon deposits like straight butta baby.
 
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Far North East Texas
Both Lube Control & Fuel Power will dissolve carbon deposits like crazy. If you don't have any around, a good throttle body spray cleaner should work well too.
 
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Lacquer thinner dissolves carbon quite nicely. DO NOT USE OVEN CLEANER!!! IT IS EXTREMELY CORROSIVE TO ALUMINUM!!!
 
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