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Detail Under Hood
Race Director
Joined: Feb 1999
Posts: 19,659
Likes: 34
From: Lenoir City Tennessee
Ci 6, 8 & 10 Veteran
St. Jude Donor '05-'06-'07-'08-'09-'10-'11-'12-'13-'14-'15
Good question. I would like to know the answer too. Good thing about mine is, it is setting on the engine stand in the garage right now. 
Race Director
Joined: Sep 2003
Posts: 13,550
Likes: 6
From: Now in God's Country, the Big Sky, Montana!
Cruise-In 7-8-9-10 Veteran
St. Jude Donor '06-'07-'08-'09-'10-'11-'12
Hose it down with Simple Green and wash it off. Don't use a pressure washer and you'll be fine. If you use straight Simple Green don't let it sit too long. I've done mine many many times this way and have never had a problem. When you are finished, crank up the car and close the hood. The heat will dry most of the water away.
Racer
Joined: Mar 2007
Posts: 266
Likes: 6
From: Elkhorn Nebraska
I always cover the airbox and alternator with plastic bags and duct tape, spray with Simple Green, pressure wash off, dry with compressed air, and then remove plastic bags and run engine. Also, I usually spray all the plastic and hoses with tire and mat dressing. Wipe it off with cotton gloves, it makes it easier to reach all the areas. 
Racer
Joined: Jan 2007
Posts: 253
Likes: 0
From: Winter Haven Florida
Are the air box and alternator the only things in need of covering? Do any of the electrical connectors/plugs need covering? I've done this and dont want to mess up my car the first time out.
Josh
Josh
Drifting
Joined: Mar 2006
Posts: 1,872
Likes: 7
From: Richmond VA
Cover the entire battery compartment. The PCM is in there. Definately dont want that to get wet.
Afterwards you can use a leaf blower to help get the water out of the nooks and crannies. Then run the motor like cajun said.
Afterwards you can use a leaf blower to help get the water out of the nooks and crannies. Then run the motor like cajun said.
Pro
Joined: Apr 2005
Posts: 663
Likes: 172
From: Oklahoma
Every week I mist Fantastic over the entire engine bay and just let it run off the engine. When it dries the grease and dirt have been removed and the hoses, plastic, etc. look very good. Try it and I think you will find it an easy way to maintain your engine compartment.
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Le Mans Master
Joined: May 2006
Posts: 5,987
Likes: 18
From: DuBois PA
St. Jude Donor '11-'12-'13-'14-'15
Be very careful with a pressure washer, you don't to force water under the intake as it'll sit around the knock sensors (expecially the rear one) and screw em up. I don't use a pressure washer...
I'm going to have to try the Fantastic idea!
I'm going to have to try the Fantastic idea!
Safety Car
Joined: May 2000
Posts: 4,408
Likes: 61
From: Centerville OH "If we weren't all crazy we would go insane"
CI 3-4-5-6-7 & 9 Veteran
St. Jude Donor '08
Forgot who originally posted this, but it works for me...
Spray Simple Green over the entire engine compartment and close the hood. Then wash the rest of the car and while rinsing, open the hood and hose off all the simple green and then shut the hood again and dry the rest of the car off. Then go in and dry the engine compartment off and you are left with a nice shiney motor!
Spray Simple Green over the entire engine compartment and close the hood. Then wash the rest of the car and while rinsing, open the hood and hose off all the simple green and then shut the hood again and dry the rest of the car off. Then go in and dry the engine compartment off and you are left with a nice shiney motor!