- 12
- 0
Hi, I have a 1986 f350 4x4 5.7 4 speed.My rear proportioning valve is leaking.I dont want to by pass it. Does any one make them still .can some one help me!!! thank's

I think you're destined for the salvage yards, unless you can find a dealership parts man that still has the old microfiche stocking system. Ours does and hes got a knack for finding obsolete parts.Hi, I have a 1986 f350 4x4 5.7 4 speed.My rear proportioning valve is leaking.I dont want to by pass it. Does any one make them still .can some one help me!!! thank's![]()
Remember, you're dealing with a lot of pressure.thank's for the reply. the plastic cup o ring i guess it's called under the snap ring is leaking. if i can get apart may be i can try to seal it?