best way to clean engine?
Thread Starter
Senior Member
Joined: Jun 2009
Posts: 562
Likes: 0
From: pennsylvania
Year: 1995
Model: Cherokee
Engine: 4.0 liter
well. i dont know what a good way would be to clean my engine. like its dirty and greasy and grimy everywhere. and spraying with a hose doesnt seem like a good idea. any good solution?
Member
Joined: Feb 2010
Posts: 123
Likes: 0
From: Greeley, CO
Year: 1999
Model: Cherokee
Engine: 4.0 Straight 6 HO
As far as I know, it's ok to wash out your engine. I power washed mine a month or two ago. Heard it was safe, I did it, and it's run fine since. I need to use an actual degreaser and do it again, though; it's still pretty bad.
Thread Starter
Senior Member
Joined: Jun 2009
Posts: 562
Likes: 0
From: pennsylvania
Year: 1995
Model: Cherokee
Engine: 4.0 liter
CF Veteran
Joined: Mar 2009
Posts: 28,068
Likes: 6
From: Tenn. and Mich.
Year: 2004
Model: Grand Cherokee
Engine: 4.7L V8
Gunk makes a great product. Get the engine warm first. Spray it on. Let it soak in but not dry. Then hose it off. Stay away from the alternator, and it won't hurt the battery to get it wet. I've used that and also general purpose cleaner in my pressure washer with great results. Just rinse thoroughly. Car lots do it all the the time. They also spray all the hoses with silicone or tire dressing to make them look new.
Dan
Dan
Seasoned Member
Joined: Mar 2010
Posts: 379
Likes: 1
From: Modesto
Year: 1993
Model: Cherokee
Engine: 4.0 high output straight 6
I hose out every engine bay i have owned once a month, It wont hurt anything ( water shoots into your engine bay everytime you drive in the rain)
I suggest having the engine running while doing it , thats how i have done it forever and I have never had a single issue.
If you do it with the engine off you have a chance that it might not start right away afterwards since water has a chance to get under the distributor cap if the seal is bad.
I suggest having the engine running while doing it , thats how i have done it forever and I have never had a single issue.
If you do it with the engine off you have a chance that it might not start right away afterwards since water has a chance to get under the distributor cap if the seal is bad.
Trending Topics
I wouldnt recommend power washing it, but its your vehicle. On my vehicles I always cover the dist with a bag, and if you have an open air filter I cover that. Spray it down with Orange Degreaser, let it sit for about 10 mins, and then use a garden hose on low pressure to rinse it off, almost a mist. If you pressure wash it you are more likely to short something out so dont do it.
If its real nasty spray the degreaser on and get a small brush (i usually use a paint brush) and kind of scrub it, then rinse it off. If you have a leaf blower they work great to dry it!
Here is a 50/50 shot from another forum, doing it as described above:

This is not my vehicle either
If its real nasty spray the degreaser on and get a small brush (i usually use a paint brush) and kind of scrub it, then rinse it off. If you have a leaf blower they work great to dry it!
Here is a 50/50 shot from another forum, doing it as described above:

This is not my vehicle either
Thread Starter
Senior Member
Joined: Jun 2009
Posts: 562
Likes: 0
From: pennsylvania
Year: 1995
Model: Cherokee
Engine: 4.0 liter
that does look good. im going to have to do that. because mine is nasty. but after i get all the minor details done i will do it. because i still have to replace CCV hoses... battery cables. and im sure something else.
CF Veteran
Joined: Mar 2009
Posts: 28,068
Likes: 6
From: Tenn. and Mich.
Year: 2004
Model: Grand Cherokee
Engine: 4.7L V8
It's your truck make your own decision. But I've pressure washed the engine compartments on my vehicles many times with zero problems. The cleaning solution goes on at low pressure and you can rinse it off at low pressure also. And warm water helps remove any residue. JMO
Dan
Dan
Thread Starter
Senior Member
Joined: Jun 2009
Posts: 562
Likes: 0
From: pennsylvania
Year: 1995
Model: Cherokee
Engine: 4.0 liter
well every suggestion sounds good. and im probally going to do them all . i will post a pic of my engine to show the before and after picture when i get the chance.
Thread Starter
Senior Member
Joined: Jun 2009
Posts: 562
Likes: 0
From: pennsylvania
Year: 1995
Model: Cherokee
Engine: 4.0 liter
yeah. im going to buy gunk soon. and stop by my local car wash... "bubble bear" and do that. and also. safe to pressure was the underbody?


