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Old 07-23-2010, 12:57 AM   #1
JT05
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Default How can i clean my engine bay?

Any suggestions on any products or effective ways to clean the engine bay
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Old 07-23-2010, 02:38 AM   #2
kickniteasy
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I clean it by hand using some regular cotton cloths and a mild soap....then I use some plastic /interior dressing for the hoses/plastic pieces and call it good
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Old 07-23-2010, 06:13 AM   #3
lavid2002
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A nylon brush is really helpful too...
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Old 07-23-2010, 10:40 AM   #4
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Old 07-23-2010, 10:57 AM   #5
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I hear steam cleaning it where it's at.

google it.
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Old 07-23-2010, 11:07 AM   #6
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http://forums.nasioc.com/forums/show...50&postcount=1

Put tin foil over the alternator(or anything that may be damaged by excess water).. you can lightly hose down after that.

I use chemical guys degreaser, and then meguiars wax and you can use back to black on faded plastics.

www.detailedimage.com for supplies.
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Old 07-23-2010, 11:39 AM   #7
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Scrubbing Bubbles bathroom cleaner...seriously. Buy a can of it, spray the entire engine/engine bay down (everywhere you want it to be clean), let it sit, rinse off. Repeat the process next time you wash the car...in about 2-3 washes it will look brand new.
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Old 07-23-2010, 11:48 AM   #8
jjunior887
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Simple green, it's all you need. I don't even use it full power and it gets the worst of it clean.
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Old 07-23-2010, 12:20 PM   #9
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+1 for simple green. I used simplegreen and this other one i think it was called purple magic im not sure but itll be right next to the simple green if you go to advanced auto those two made the engine bay look brand new
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Old 07-23-2010, 12:37 PM   #10
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Get a $2 can of degreaser, any brand will work. Cover electronics in the engine bay, then go to town and soak everything (cold motor). Let it sit 5-10mins.

Then set the hose on light stream, and rinse every off.

If you like to have things look like they have a shiny coat, get a can of engine detailer. Spray liberally on all components after the rinse, then run the engine for 20min or so to set it in.
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Old 07-23-2010, 12:53 PM   #11
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I like to used Adams APC and Optimums Power Clean, both work well on grease and such. I also just use the car wash soap everywhere under the hood. You can pretty much hit everything with water except the Alternator. I use a power washer and of all the 100 of cars i've done, I have only had 1 issue with an oil light which was from water that had pooled on the block and went out once I removed the water. Make sure you use a brush to get in all the tight places.

Rich

Simple Green will work as well.
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Old 07-23-2010, 03:52 PM   #12
soomanfoo
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I was wondering the same thing the other day. I just decided to use some silicone spray that i used on my weather stripping to prevent it from sticking in winter. I mean logically, rubber hoses are silicone based anyways so i figure the silicone spray will only add any lost moisture from the rubber which would only lead to dry rot anyways.
id probly stay away from armor all btw... keep in mind your engine bay isnt just shiny....its gonna be really really hot so choose a substance thats able to handle the temperature.
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Old 07-23-2010, 08:18 PM   #13
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Quote:
Originally Posted by iraj View Post
+1 for simple green. I used simplegreen and this other one i think it was called purple magic im not sure but itll be right next to the simple green if you go to advanced auto those two made the engine bay look brand new
purple power. but they should rename it purple magic
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Old 07-23-2010, 08:25 PM   #14
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What would you recommend doing if one didn't have access to a regular hose? I'm in an apartment - of course I could go to a car wash, but I keep hearing that you need to clean it when it's cooled off, plus I worry about the high pressure.

Maybe just diluted SG and a rag, then dry off?
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Old 07-27-2010, 01:17 PM   #15
mtbiker278
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I was actually just at the car wash. I find that the degreaser/wheel cleaner works just fine for removing a majority of the grime. If you have some kind of oil you might want to spot treat it with something stronger. As for rinsing off I just use the low pressure rinse. One thing you might hear is some belt squeal if it's still wet when you start up. It goes away after reving the engine a bit.
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Old 07-28-2010, 12:17 PM   #16
CBR954
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Simple green or super clean... Just dont let it sit on your paint it will eat away.
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Old 07-28-2010, 12:31 PM   #17
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Quote:
Originally Posted by silverscoob04 View Post
purple power. but they should rename it purple magic
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Old 07-31-2010, 03:40 PM   #18
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Engine cold came about in the late '70s -mid '80's when the auto manufacturers were experimenting with alloy & plastic composite parts & the cold blast of water on the hot parts was contributing to part failures. Especially exhaust manifolds on Rangers, Aerostars, BRonco's, & several GM front drive cars.

Now all I do is grab my pre-diluted SG (60/40 for under hood) head up to the car wash a mile away. Pop the hood, spray SG mix on all the inner fenders, firewall, etc then start washing the rest of the car. By the time I get up front, its not scorching hot.

spray the rest of the engine with SG.. scrub if it has ever been done before or hasn't been done in a while. let it soak, hit the tires & wheels. Wash the rest of the car again. Now start the car (parking brake on in Neutral/Park please). Hose the engine off using NO TRIGGER from the wash nozzle. if you hear the car start to stumble move the water away.after all the foaming of the SG is completely gone, one last sweep with the nozzle, close the hood. Finish rinsing the car. Pay special attention to the windshield, wipers & cowl area as the SG will migrate a little.

Drive home, pop the hood, let it air dry. I use a Pro-shop version of Adam's In-Out for a nice, even satin finish. I don't like greasy-glossy stuff all over the engine bay.

Rob
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Old 08-04-2010, 05:48 PM   #19
SF5
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I use red hot engine degreaser and a high temp presure washer. you have to just becareful and not spray hard into electrical parts. I bag off my filter and take out my hid ballasts. then finish up with armor all it looks brand new when finished and lasts for quite a while!
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Old 08-04-2010, 06:52 PM   #20
sti3573
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how long do you guys let simple green soak?
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Old 08-04-2010, 10:21 PM   #21
boost4life
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I wouldn't let it sit more then 5 minutes, or less. As long as the heavy stuff is removed you should have to let it sit long

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how long do you guys let simple green soak?
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Old 08-05-2010, 02:13 AM   #22
stwang314
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Simple Green + as little water as possible =

my advice:

1. If you have and aftermarket short ram intake; put a plastic bag over it, and the same for an atmospheric BOV (which are stupid). Put a generous amount of simple green on the engine bay, let it soak for about 10 minutes. Then spray the engine bay with as little water as possible to get it clean.

2. If you are for the most part stock (intake...) then spritz the engine with degreaser, let it soak for 10 minutes, then turn the engine on and start spraying the engine with as little water as needed paying close attention to avoid the intake. this way, if it starts to make any unfamiliar noises, you can stop immediately instead of accidentally doing any sort of damage.

oooh almost forgot, DO NOT SPRAY NEAR COIL PACKS... you can burn them out and they are not cheap
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Old 08-05-2010, 06:06 PM   #24
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Quote:
Originally Posted by iraj View Post
+1 for simple green. I used simplegreen and this other one i think it was called purple magic im not sure but itll be right next to the simple green if you go to advanced auto those two made the engine bay look brand new
Man, I dunno about those harsh chemicals. I find them to do be too strong and dull the finishes.

What I have been told is the cars today cannot take a full washdown like before due to all the computer like sensors, and engine management electronics.
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Old 08-05-2010, 06:25 PM   #25
Kean
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Quote:
Originally Posted by pops91710 View Post
Man, I dunno about those harsh chemicals. I find them to do be too strong and dull the finishes.

What I have been told is the cars today cannot take a full washdown like before due to all the computer like sensors, and engine management electronics.
….Simple Green is “ok” when used as directed and diluted appropriately for the task. However, it is known to cause accelerated corrosion of bare aluminum surfaces so caution should be used. Personally, if one was to use SG, I would recommend their aluminum-safe versions. ….I can’t comment on “purple magic” since I have never used that product before and don’t know its chemical makeup.

In my case, I find something like car wash soap or Chemical Guys Citrus Wash & Clear works well enough most of the time. ….if I need some added cleaning power I will use Meguiars APC+ in my solution. I find agitation makes all the difference and I have several types of brushes on hand to help me with this task. There are quite a few safe, effective cleaners on the market these days to choose from.

IME, I have never had a problem cleaning an engine bay on any of my vehicles (new or old). I simply use a little common sense around sensitive looking areas and adjust my technique(s) accordingly. ….even on my new 2010 Challenger I haven’t skipped a beat. However, its one of those things I would always advise other people to proceed with caution if they are unsure. It is always better to be safe than sorry so take precautions if you have doubts. ….or simply forgo the whole “wash” and just do the cleanup as best as you can with dampened towels and/or a spray bottle.

Every car will be different and can pose its own set of challenges.
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