Help...Vacuum diagram for E20 ('78) needed
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More Turbo
Joined: Oct 2003
Posts: 527
Likes: 289
From: Wonderful, Fun, Pahrump!
Help...Vacuum diagram for E20 ('78) needed
I have hit a brick wall here. My van suddenly started running like crap. I suspect a vacuum leak.
There is no sticker on the valve covers, other than an emissions sticker.
I have tried Chiltons, Haynes, and a couple of Ford dealers. None have the diagram.
I have a 1978 E250 (4x4 Pathfinder Quadravan) with a NON-catalytic 460 motor. This is a NON-emissions engine.
Any advice on where to get a vacuum line diagram would be greatly appreciated. I plan on replacing ALL vacuum lines. I have no idea how old some of them may be.
bob
There is no sticker on the valve covers, other than an emissions sticker.
I have tried Chiltons, Haynes, and a couple of Ford dealers. None have the diagram.
I have a 1978 E250 (4x4 Pathfinder Quadravan) with a NON-catalytic 460 motor. This is a NON-emissions engine.
Any advice on where to get a vacuum line diagram would be greatly appreciated. I plan on replacing ALL vacuum lines. I have no idea how old some of them may be.
bob
Lead Driver
Joined: Feb 2003
Posts: 8,140
Likes: 4
From: Oak Harbor, OH
You really only need three.. Manifold vaccum goes in to the cabin for the heater, unless it's the old cable controlled heat/defrost box. One ported or timed for the advance on the distributor, and on large manifold line for the brake booster.
Thread Starter
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More Turbo
Joined: Oct 2003
Posts: 527
Likes: 289
From: Wonderful, Fun, Pahrump!
Would a leaking brake booster cause the same symptoms as a vacuum leak? I have noticed that when I only lightly apply the brake pedal at a stop the pedal will bleed down. If applied with force, it stays put. I am not sure if this is a booster or line problem at this time.
bob
bob
