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Certified Pre-Owned
Join Date: Aug 2002
Location: Nanny State
Posts: 3,132
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How to clean catalytic converters? (off car)
I have a couple of small Magnaflow 300 cell cats that probably have around 1500 miles on them. The particular engine they were on was running both a tad rich and the engine was burning oil. Those problems have been corrected- I'd like to flush or spray something at these to clean them out as I think it might be warranted before I hang them back in the exhaust stream. Any thoughts as to what would be safe and or effective. The cats are off car at the moment so I'm not looking for fuel additive type solutions.
My first instinct was brake clean, but not sure if that's a good idea.
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'84 Carrera Coupe |
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08-17-2012, 02:22 PM
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Back in the saddle again
Join Date: Oct 2001
Location: Central TX west of Houston
Posts: 55,927
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Won't super heating them with exhaust burn everything off of them that can be burned off.
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08-17-2012, 02:54 PM
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The Unsettler
Join Date: Dec 2002
Location: Lantanna TX
Posts: 23,885
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Where's that post from the guy who nearly died after getting a whiff of burning brake cleaner?
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08-17-2012, 03:39 PM
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The Unsettler
Join Date: Dec 2002
Location: Lantanna TX
Posts: 23,885
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08-17-2012, 03:42 PM
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I'm with Bill
Join Date: Jun 2005
Location: Scottsville Va
Posts: 24,186
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Quote:
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Electrical problems on a pick-up will do that to a guy- 1990C4S |
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08-17-2012, 03:43 PM
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Registered
Join Date: Jan 2002
Location: Long Beach CA, the sewer by the sea.
Posts: 37,695
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Monkey, I think the heat has to vaporize the chlorinates. His MIG welding did that job. Still, non-chlorinated cleaner is the way to go.
The consensus on cleaning cats off the car is that you can't. People have tried running toluene, acetone or lacquer thinner (which is mainly toluene and acetone) in the gas tank as high as 10%. I think if that works, it's because it cleaned up some other parts along the way, like injectors. I've heard that it produces higher than normal (which is high enough) temps in the cat accelerating carbon burn off. |
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08-17-2012, 04:00 PM
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Registered
Join Date: Jan 2005
Location: Minneapolis
Posts: 7,482
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Some diesel shops offer a catalyst baking process that will clean it out. I'm not sure of the temperatures required, but I don't think your home oven gets that hot
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I love you guys outside this forum  -Eric |
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08-17-2012, 07:08 PM
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Registered
Join Date: Jun 2002
Location: Winnipeg, MB, Canada
Posts: 3,963
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Cats are designed to opperate for 100,000's of miles. With 1500 miles on them they shouldn't need any cleaning......
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Bunch of old cars 
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08-18-2012, 09:51 AM
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