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Washing the engine bay

Specter

Well-known member
Joined
Apr 20, 2008
Messages
367
Location
Karachi, Pakistan
i am afraid if i wash it with a high pressure water pipe like at the gas pumps i might get some sensors wet and will be in trouble? Havent washed it after the swap, what should i do? Should i clean it all by hand? Or should i shower it hoping that all will end well?
 

pwrneeds90

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Joined
Jan 30, 2009
Messages
57
Location
norwalk,ct
Put engine degreaser and let it sit for a bit and rinse it off.Should be clean after that if you see anything left just clean it with your hand thats how I do mine hasnt let me down. /ubbthreads/images/graemlins/smile.gif
 

turbowop

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Joined
Apr 29, 2001
Messages
11,972
Location
Yakima, WA
This has been discussed before with mixed opinions...

I have washed the engine bays on both my cars hundreds of times with no issues. Just use common sense and don't put the nozzle right up against anything that could potentially go bad due to water. Spray everything down really well with SimpleGreen first and scrub the really bad areas if you feel the need to.
 

cheekychimp

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Joined
Apr 19, 2004
Messages
7,333
Location
East Sussex, U.K.
Mark,

Do you 'wrap' any of the sensors prior to pressure washing? Having seen how clean your engine bay is this is something I'd like to do on several of my cars. I appreciate that the engine compartment should be able to be washed with limited repercussions but like the OP I too would value some advice on any areas to be careful. I know the MAF (including the air filter if it is open and anything to do with spark are areas to avoid flooding if possible, but anything else?

Paul.
 
Last edited:

CarRacer

Well-known member
Joined
Jun 28, 2007
Messages
4,371
Location
Shakopee, MN
I'd watch out for the CAS. I helped out a member who had washed his engine. It fogged up the photoreceptors and wouldn't let the car fire.

Other than that, use common sense and you'll be fine.
 

turbowop

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Joined
Apr 29, 2001
Messages
11,972
Location
Yakima, WA
I don't wrap anything. I also don't hit the air filter directly if I'm just doing a quick rinse down. When working on a really dirty bay I'll remove intercooler piping and other things in the way to get deeper into the engine bay and clean those parts by hand if needed.
 

4thStroke

Well-known member
Joined
Oct 22, 2007
Messages
1,864
Location
Vancouver, WA
Quoting turbowop:
When working on a really dirty bay I'll remove intercooler piping and other things in the way to get deeper into the engine bay and clean those parts by hand if needed.



Oh, the pitfalls of OCD. /ubbthreads/images/graemlins/laugh.gif
 

turbowop

Well-known member
Joined
Apr 29, 2001
Messages
11,972
Location
Yakima, WA
It's weird though. I'm only like this with cars. For instance, I thrash my ski gear and ski good/newer skis in probable rocky terrain without a care, while others are worried about scratches on the tops. /ubbthreads/images/graemlins/dunno.gif
 

atc250r

Staff member
Joined
Sep 11, 2003
Messages
13,235
Location
Orange County, NY
I do pretty much the same thing as wopper does. If you can, grab the water outlet off the bottom of your hot water heater, not only will it help loosen up the stubborn stuff you'll be getting the sediment out of the bottom of the heater at the same time. I prefer to use either Castrol Super Clean or Spray Nine over Simple Green for really tough jobs. For a "maintenance" cleaning the Green is perfect. Avoiding the CAS sounds like a good idea, maybe just put a sandwich bag over it and wrap it with tape.

John
 

turbowop

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Joined
Apr 29, 2001
Messages
11,972
Location
Yakima, WA
I guess I'll add that with 503 I wasn't sure how well the MAFT box would handle water, so I put a grocery shopping plastic bag over it the few times I've washed the engine bay. I'll also put one over the filter if I feel like it, but usually just direct the water away from it.
 

dsmless

Well-known member
Joined
Jun 12, 2008
Messages
224
Location
tucson,az
That was me, what i do is cover the CAS with a plastic bag and put a rubber band around it to keep it form getting water in there, dont get stranded at a car meet like I did and have to pay the tow guy to get your sh----t
 
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