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Old 06-20-2011, 04:46 PM   #1
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What if I have a muddy engine?

So, while I was 4-wheeling I ended up getting a bunch of mud on my engine. It is dry now and I already cleaned my air filter. Is there any problems this could cause? Should I run a hose over it? Or does it not matter?

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Old 06-20-2011, 09:20 PM   #2
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If you get a massive amount in the engine compartment then it could cause some over heating issues, but I mean the entire block covered in at least an inch of mud. Personally I have never had this happen even while running in mud bogs with no inner fenders i have never got this much mud on my engine.

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Old 06-20-2011, 09:23 PM   #3
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engine degreaser by GUNK works good to get it off the engine, spray it on while the engine is cool let it sit about 15 mins and then rinse it off..itll get it off everything metal or plastic under the hood BUT it wont get it off ruber hoses, ive tried scrubbin them with a stiff brush and everything, ive just gotten used to the hoses bein brown lol
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Old 06-20-2011, 09:47 PM   #4
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Originally Posted by 1995yj318 View Post
If you get a massive amount in the engine compartment then it could cause some over heating issues, but I mean the entire block covered in at least an inch of mud. Personally I have never had this happen even while running in mud bogs with no inner fenders i have never got this much mud on my engine.
Yeah, It isn't that much. Just enough to make everything brown, I don't even know how it got in there.
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Old 06-20-2011, 09:48 PM   #5
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engine degreaser by GUNK works good to get it off the engine, spray it on while the engine is cool let it sit about 15 mins and then rinse it off..itll get it off everything metal or plastic under the hood BUT it wont get it off ruber hoses, ive tried scrubbin them with a stiff brush and everything, ive just gotten used to the hoses bein brown lol
Thanks for the help, I will try some of that stuff.
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Old 06-20-2011, 10:27 PM   #6
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What also works well for dirt is Simple Green. It's a house cleaning supply, $6 for 2 liters at Walmart.

Takes it off the hoses nicely.

But as with any cleaner, it always works 100% better if you scrub everything down with a brush or rag or something.
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Old 06-20-2011, 11:19 PM   #7
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What also works well for dirt is Simple Green. It's a house cleaning supply, $6 for 2 liters at Walmart.

Takes it off the hoses nicely.

But as with any cleaner, it always works 100% better if you scrub everything down with a brush or rag or something.
simple green works on the hoses? hmm i gotta try that, i think i got some around the house somewhere
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Old 06-21-2011, 07:54 AM   #8
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i use the simple green, i hook it up to the pressure washer, and blast away, works like majac
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Old 06-21-2011, 09:45 AM   #9
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I would clean it; why not, it's easy enough to do. Not sure if you work on your own vehicles or not, but its much much nicer to work on a clean engine than a dirty one. I don't mind getting dirty, but things just go smoother when I don't have to scrape off a layer of crud to get at whatever part I'm trying to fix/replace.
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Old 06-21-2011, 09:49 AM   #10
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Hosing off the engine works if you 'presoak' it first, then spray with your gunk off or simple green...BUT to prevent problems...after hosing and cleaning it all, BEFORE you start it up-grab a can of WD 40 and spray ALL your electrical components, wiring blocks, alternator, computer, etc. WD 40 is made specifically to REPEL water and won't hurt the electrical stuff. Better to blow a full can of WD40 under the hood than to start the engine and short out connections that are full of water!
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Old 06-21-2011, 09:55 AM   #11
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Hosing off the engine works if you 'presoak' it first, then spray with your gunk off or simple green...BUT to prevent problems...after hosing and cleaning it all, BEFORE you start it up-grab a can of WD 40 and spray ALL your electrical components, wiring blocks, alternator, computer, etc. WD 40 is made specifically to REPEL water and won't hurt the electrical stuff. Better to blow a full can of WD40 under the hood than to start the engine and short out connections that are full of water!
That's actually a pretty good tip, something to keep in mind. I always keep a can with me just in case things get a little to wet on the trail. When hosing my engine off, I usually cover the distributor and intake (foil over the distributor like a cap, and tape over the intake). Then when I'm all finished, I use a blow gun with my air compressor and spray everything down to blow away the puddles and dry things off. If you don't have an air compressor, the WD-40 trick should work just fine.
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Old 06-21-2011, 09:11 PM   #12
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i had never head of using simple green, gonna have to try it ;]
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Old 06-21-2011, 10:35 PM   #13
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Simple Green sounds like the way to go. Thanks for the help.
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Old 06-22-2011, 07:33 AM   #14
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Yep, simple green is pretty good stuff; I use it full strength in the engine bay and other areas that need heavy degreasing, and sometimes if the paint is looking pretty bad I'll cut it to 1/4 strength and use it to remove the old layers of wax. It really helps clean up the paint if its been neglected.
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Old 06-22-2011, 07:48 AM   #15
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I'd clean it off, mud will hold in moisture and promote rusting.
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Old 06-22-2011, 07:54 AM   #16
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I've always just pressure washed the engine while it's already running??
any specific reason why you wouldn't want to do this?

Obviously I try as best as possible to steer away from my fuse box and other major electircal components. been doing it this way for years, even detailed cars for a couple years while my father owned a small auto sales lot. Never had an issue.
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Old 06-22-2011, 11:30 PM   #17
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So, none of this will effect my battery, fuse box or wiring? Can I just drench my engine?
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Old 06-22-2011, 11:37 PM   #18
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you shouldnt have any issues spraying down your engine bay....just be carefull if you use a pressure washer....id recommend using a plain old garden hose to soak all the mud...then blast it away with the pressure washer
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Old 06-23-2011, 07:06 AM   #19
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I wouldn't blast your battery or any wiring/fuse boxes; they're fine getting wet from over-spray and even if you need to scrub them, but I wouldn't blast them with a hose. I've never had a problem with them after cleaning the engine.

If you do have problems, here is where you use either the trick of blowing everything dry with compressed air, and/or soaking it with WD-40 if you don't have a compressor.

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