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Hello all I have a 1986 Ford F-250 351w. Now my problem is I cannot find where the pcv valve is connected. I have heard it connects to the valve cover but since I bought the truck I have had a regulator for the smog pump system attached there. Here are some pictures
Help would be much appreciated thanks a lot!
The regulator is hooked up right now. Should the pcv valve go there and the reg. go somewhere else?
Yes, the PCV valve goes into the valve cover (I'm assuming the other end of that hose leads to a big port under the carburetor), its job is to suck out the blowby gasses back into the combustion chambers.
That device you're calling a regulator looks like the Air Bypass Valve (BPV on your sticker on the radiator support) whose job is to release air to the atmosphere (instead of into the exhaust) during certain conditions, e.g. on deceleration (to prevent backfires).
Somebody has done a hack job there, presumably in an attempt to "disconnect all that smog crap" and "make it run better."
Sheesh, I just have to shake my head and wonder what they were thinking.... clearly an idiot, he is... put the PCV valve in there, don't worry about the AIR pump hose for right now.
Yes, the PCV valve goes into the valve cover (I'm assuming the other end of that hose leads to a big port under the carburetor), its job is to suck out the blowby gasses back into the combustion chambers.
That device you're calling a regulator looks like the Air Bypass Valve (BPV on your sticker on the radiator support) whose job is to release air to the atmosphere (instead of into the exhaust) during certain conditions, e.g. on deceleration (to prevent backfires).
Somebody has done a hack job there, presumably in an attempt to "disconnect all that smog crap" and "make it run better."
Sheesh, I just have to shake my head and wonder what they were thinking.... clearly an idiot, he is... put the PCV valve in there, don't worry about the AIR pump hose for right now.
Now would you by chance know where that broken red vacuum line leads to? I believe it is attached to the egr
Red is 'manifold' vacuum.
The egr should have a green line.
Is there a vacuum routing diagram on the radiator support?
Are you sure that you have the correct air cleaner housing on your truck?
Oh I just figured that was running off the egr I wasn't 100% sure. I do have a vacuum schematic but it is very confusing and hard to follow. And I believe I have the correct air cleaner housing. I just can't find where that one part would plug into
Oh I just figured that was running off the egr I wasn't 100% sure. I do have a vacuum schematic but it is very confusing and hard to follow. And I believe I have the correct air cleaner housing. I just can't find where that one part would plug into
Hey, Cam, can you please post a picture of the vacuum hose routing diagram on the top of your radiator support under the hood? A 1986 F250 might even have a color diagram.... here is mine for reference:
Hey, Cam, can you please post a picture of the vacuum hose routing diagram on the top of your radiator support under the hood? A 1986 F250 might even have a color diagram.... here is mine for reference:
Here is the vacuum diagram with engine bay pics and the lines that I need help finding
Oh I just figured that was running off the egr I wasn't 100% sure. I do have a vacuum schematic but it is very confusing and hard to follow. And I believe I have the correct air cleaner housing. I just can't find where that one part would plug into
I'm sorry.
It appears your bpv vents directly to the engine compartment.
Connecting the pcv to the valve cover should help with oil control.
03-10-2016, 04:55 PM
