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Guest Message by DevFuse

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Cleaning a very dirty engine.

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11 replies to this topic

#1 NewDriverOlderRide


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Posted 12 January 2006 - 03:46 PM

^^Yea the whole thing is extremely messy, I want it to look clean. I have a power washer? would that harm it? I really dont want to go over every individual piece. tips? ideas?

#2 84gl


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Posted 12 January 2006 - 04:11 PM

go to the car wash and spay it down with the tire cleaner wait a few minutes and rinse that will get most of it

#3 azsubaru


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Posted 12 January 2006 - 04:16 PM

Careful around the distributor. I got mine wet once and it took 3 days to dry out. Of course it drys a heck of a lot faster if you know what it is and dry it out yourself. Posted Image

#4 85Sub4WD


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Posted 12 January 2006 - 04:31 PM

I have used a detergent, like Pamalove, joy - any of those to break up the grease - mind you be VERY careful around your electronics - get something wet and you may kill it - also try not to get water into the intake manifold

mind you, I don't wash my engine often - usually only if I am trying to find an oil leak :D

#5 Mike W

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Posted 12 January 2006 - 04:40 PM

An amazing number of guys have found that oven cleaner removes even the most stuborn caked and baked on grease. They've also found that it tends to remove paint from valve covers and whatever else it gets on and can even etch into aluminum. In other words oven cleaner not recommended on cars.
Plain old Dawn dish soap and/or Simple Green (or dollar store generic) works pretty well when combined with your pressure washer.

#6 BoostedBalls


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Posted 12 January 2006 - 06:14 PM

nothing beats CASTROL SUPER CLEAN. I get my engines hot and spray it all over the place. Then I fire the engine back up and let it cook a bit. After 5 minutes or so, I'll take the hose that is hooked up to my deepsink and blast hot water on the engine while it's still runing. I wouldn't use a pressure washer because it can really push water past otherwise tight seals. (wheel bearings, engine bearings, etc). The hose water is only 65psi as compared to over 1000 from a pressure washer. The Castrol is biodegradable and so is Simple Green, the Castrol is stronger though. I keep the engine running for a while after this to make sure everything gets evaporated out. If the engine dies while you are doing this, you will have a good indication of where you caused the problem. If you get some in the dist, take the cap off and let it dry.

I would rather deal with wet connections than an engine fire on the freeway when all that build-up decides to light up.

#7 Mykeys Toy

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Posted 12 January 2006 - 06:18 PM

I second the super clean though I never tried to rinse it off, usually just runs off without anything extra.. I do still have a ways to go for shiny but at leaest I can see the block now.

#8 Subarian


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Posted 12 January 2006 - 06:19 PM

If you do get water in the distributor, a quick wipe inside the cap and a spray of some WD-40 will get you going again.

#9 Tom63050


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Posted 12 January 2006 - 06:41 PM

If you do get water in the distributor, a quick wipe inside the cap and a spray of some WD-40 will get you going again.

I always cover my disty with aluminum foil before cleaning the motor. If you have a carb, cover the air intake too.

#10 Phizinza


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Posted 12 January 2006 - 07:07 PM

I have a 93 Subaru Loyale S/W 4WD Manual.

I'm guessing thats your car?

My bro got his 88 Telstar's engine bay filled with mud. This mud was extremely annoying. You couldn't spray it off. You had to wipe it with a degreaser (like kerosene) and then spray. It still isn't totaly off, but got pretty close. Now, this car has electric everything. He just sprayed the whole thing. After drying the disty cap it ran, not quite smooth, but after a while it was back to normal. I am unsure if subies take to water the same. But if you don't turn it on for a few hours after while leaving it in the sun you should be fine. Just don't use a pressure cleaner, as they can blast water, and what you are trying to get off, into places you shouldn't get it...

Someone also suggested leaving it on the lawn and putting a sprinkler under it for a few hours. :-\ Not good if you leave in Australia with water ristrictions.

Have fun!

#11 dave valiant

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Posted 12 January 2006 - 08:15 PM

I have used oven cleaner to clean engine compartments before installing an engine. It does an amazing job of getting rid of whatever might be caked on there, like oil, grease, and paint. I would never use oven cleaner on an engine though.

#12 ballitch


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Posted 12 January 2006 - 09:34 PM

ya that castrol stuff is awesome. i like that hot engine cleaner idea. since the grease and oil is hot, it will clean off easier.


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