Cleaning Plenum...?
Senior User
Joined: Aug 2008
Posts: 336
Likes: 0
From: on the garage floor. lol!
i remember a while back i saw someone use easy off oven cleaner on the plenum and took the grease off. i also noticed that it was very acid like because it was also sprayed on the block and it stripped the paint off the block.
Senior User
Joined: Jan 2008
Posts: 373
Likes: 1
From: Hudson Valley, NY
anyone who has ever 'ported and polished' has removed any 'factory' coating there may have been .. and I've never hear of 'replacing' the coating ..
Posting Guru
Joined: Nov 2009
Posts: 2,244
Likes: 1
a coating on cast aluminum.... lol where do u all come up with this stuff?
and i dont see easy off eating the paint off... it hasnt ever done it every time u used it
maybe all the oil and gas that leaked out on it ate it off but not the oven cleaner
ive used it on lots of grills to and they still have the paint on them
and i dont see easy off eating the paint off... it hasnt ever done it every time u used it
maybe all the oil and gas that leaked out on it ate it off but not the oven cleaner
ive used it on lots of grills to and they still have the paint on them
Hotshot
Joined: Sep 2001
Posts: 11,958
Likes: 228
There is a coating inside the plenum and the throttle body from the factory. I don't know what it is or how important it is. I would guess that its there to prevent the aluminum from corroding which bare aluminum does.
I never said that that cleaning product would ruin it. I have never used that stuff for anything like this so I don't know how strong it is.
I never said that that cleaning product would ruin it. I have never used that stuff for anything like this so I don't know how strong it is.
Senior User
Joined: Jan 2008
Posts: 373
Likes: 1
From: Hudson Valley, NY
There is a coating inside the plenum and the throttle body from the factory. I don't know what it is or how important it is. I would guess that its there to prevent the aluminum from corroding which bare aluminum does.
I never said that that cleaning product would ruin it. I have never used that stuff for anything like this so I don't know how strong it is.
I never said that that cleaning product would ruin it. I have never used that stuff for anything like this so I don't know how strong it is.
Aluminum is actually very prone to corrosion. However, aluminum corrosion is aluminum oxide, a very hard material that actually protects the aluminum from further corrosion. Aluminum oxide corrosion also looks a lot more like aluminum, so it isn't as easy to notice as rusted iron.
Senior User
Joined: Oct 2003
Posts: 480
Likes: 1
From: Elyria, Ohio
The coating is on the throttle plates from what I have read; so I used CRC throttle body cleaner there. But the upper intake I used on-sale generic brake cleaner and it did a great job. Acetone or naphta will also work but are rough stuff; flammable and evaporate quickly.
FTE Stories
Ford Trucks for Ford Truck Enthusiasts
3 Best / 3 Worst Parts of Modern Ford Ownership
Brett Foote
10 Amazing Upgrades That Solve Common Ford Truck Owner Headaches
Pouria Savadkouei
Every 2026 Ford Engine Explained
Brett Foote
10 Ugly Ford Trucks That We Still Kinda Love
Joe Kucinski
10 Things Every Truck Owner NEEDS (2026 Edition)
Michael S. Palmer
Rezvani's Latest Post-Apocalyptic Monster Is a Ford F-150 Raptor Underneath
Verdad Gallardo
Top 10 Most Expensive Ford Trucks Ever Sold on Bring a Trailer
Joe Kucinski
2027 Ford Super Duty Buyer's Guide (Every Model, Engine, & Package)
Brett Foote
Top 10 Ford Truck Tragedies
Joe Kucinski
Posting Guru
Joined: Nov 2009
Posts: 2,244
Likes: 1
get a big bucket that the upper intake will fit in and fill it full of carb. cleaner and let it soak in it for a few days then take it out get a rag a little wire brush and some carb cleaner in a can and wipe it out scrub and all that good stuff that involves manual labor lol
idk how well that will work but it had worked wonders on carb.s
idk how well that will work but it had worked wonders on carb.s
Hotshot
Joined: Sep 2001
Posts: 11,958
Likes: 228
That Berrymans' B12 stuff works good. I have a gallon can of it that even has a basket in it for soaking parts. It works really well. I know the can isn't big enough to soak the intake, but I bet it would clean up the intake pretty good. I agree with soaking it in a container big enough to hold it. Thats the best bet short of taking it somewhere to have it cleaned.
Thread
Thread Starter
Forum
Replies
Last Post
nstueve
1987 - 1996 F150 & Larger F-Series Trucks
62
Jul 20, 2022 08:21 AM
nstueve
1987 - 1996 F150 & Larger F-Series Trucks
80
Feb 5, 2016 12:33 AM
dixie_boysles
1983 - 2012 Ranger & B-Series
2
Apr 3, 2010 02:26 PM
