Rust removal from a running engine.....
Senior User
Joined: Jun 2001
Posts: 200
Likes: 0
From: Davis, CA
Rust removal from a running engine.....
I was wondering, how much would it hurt an engine to, while it was runnning, feed some rust remover(I don't know, CLR or lime away or something) through in the manifold from a vacuum source. I know that at work we feed chemicals through manifold vacuum, and they make the car run like crap while we do it, so its probably not a combustible substance, but would anything else work?
The reason I ask is I have a 2.3L 4cyl that has 30 psi less compression in one cyl., after I got it runnin from sittin in a lake, then sitting for 6 months. My idea is that this cyls valve was open enough while it was sittin to allow rust to build up around the valve seat. So could it work? I'd have to pull the head anyway, so is it worth a shot? Thanks
The reason I ask is I have a 2.3L 4cyl that has 30 psi less compression in one cyl., after I got it runnin from sittin in a lake, then sitting for 6 months. My idea is that this cyls valve was open enough while it was sittin to allow rust to build up around the valve seat. So could it work? I'd have to pull the head anyway, so is it worth a shot? Thanks
Elder User
Joined: Feb 2001
Posts: 829
Likes: 0
From: Porterfield
Rust removal from a running engine.....
Open enough ...... Well lets see if a motors not running are the valve open ??? Well there should be one or two intake valve open on some cyclinders, one exhuast valve open on a differant cyclinder, and one cyclinder doning the compression stroke.
Senior User
Joined: Jun 2001
Posts: 200
Likes: 0
From: Davis, CA
Rust removal from a running engine.....
Well....I'll admit it wasn't a completely thought out idea, but I still haven't figured out why or how it happened. I double checked the cam lift, just to see if they're all even, and they were. So its something with the valves, I just don't know what. But why just that one cyl? Any ideas on what to do?
Moderator
Joined: Jan 2001
Posts: 57,023
Likes: 2,754
From: Virginia
Rust removal from a running engine.....
Why do you think it's the valves? Couldn't it be the rings are stuck in that cylinder? Take some Kroil, or that stuff everybody likes-I think they call it PB Blaster, and squirt some in the cylinder and let it sit for a day or so. It may free the rings if they are rusted to the piston.
