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Cleaning gunk from the crank case?

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Old 08-03-2014, 10:56 AM
1'stonraceday 1'stonraceday is offline
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Cleaning gunk from the crank case?

Somewhat unrelated to anything Ford . . . but I know this site has some mechanical geniuses . . . and I need help.
It's a Briggs motor. I use it with a water pump. Apparently the seal went out and there is water in the oil/crank case. The oil's a real pretty off-white!)
What can I put in there to clean all that out? I've heard diesel fuel works very well. Of coarse I wouldn't be starting it, just rotating the crank with starter rope and spark plug removed.
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Old 08-03-2014, 10:48 PM
jimbbski jimbbski is online now
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Diesel Fuel, Kerosene, or Gasoline will work but the first two are much safer to use. Gasoline vapors can ignite easily with nasty results.
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Old 08-13-2014, 04:08 PM
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xlt4wd90 xlt4wd90 is offline
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I've found that nothing beats getting in there with brush or scrapers. But only do that if you're overhauling the engine already.

I opened up a 4 liter v6 in an Aerostar van I bought second hand and found an amazing amount of solid crud in it. It had a one-piece intake manifold gasket, with a wide section that spanned the lifter valley. It looked like someone dumped a cup of cat litter on it. There was a similar collection of crud in the oil pan. No amount of engine flushing would have gotten that stuff out.
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