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Discussion Starter #1
Hi,

When a fuel pump is dying, will it work fine when cold, but when the engine ('65 200 I6) is hot start giving me problems?

My car dies when it gets hot (after driving for about 15 minutes). It dies when I stop after braking. It starts back up, but the hotter it gets, the worse my problem.

I've tried 2 different carbs (Holley rebuilds), so I've pretty much ruled that out.

I have bent the fuel line away from the block in an attempt to keep it cooler. The exhaust is on the right side of the engine and the fuel line is on the left side, so I really don't think it's the line.

I don't have points, I have a Pertronix ignitor. Could this ignitor be going bad?

I think I'll replace the fuel pump if you all think this could be symptomatic of one going bad.

Please help, I'm at my wits end.

Thanks for your time,
John Thomas



http://albums.photopoint.com/j/View?u=525545&a=7533002&p=26667243.jpg
65 coupe pics: http://albums.photopoint.com/j/AlbumIndex?u=525545&a=3848066
66 conv pics: http://albums.photopoint.com/j/AlbumIndex?u=525545&a=7533002
 
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Do you have a spacer under the carb? How does it act when hot? Does it spew black (rich) smoke? I had a similar problem on a Ford pickup and the spacer was the answer.

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Discussion Starter #3
I don't have a spacer, but I do have a stack of five gaskets under the carb to help insulate it from the manifold. Maybe this isn't effective, I don't know.

Before the stack of gaskets, I had one gasket and no spacer, but it didn't seem to make a difference either way.

Any input?

Thanks,
John Thomas

http://albums.photopoint.com/j/View?u=525545&a=7533002&p=26667243.jpg
65 coupe pics: http://albums.photopoint.com/j/AlbumIndex?u=525545&a=3848066
66 conv pics: http://albums.photopoint.com/j/AlbumIndex?u=525545&a=7533002
 

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This may sound stupid but do you have the right gas cap on it? The wrong type of cap, or a bad vent in the correct cap can give those sort of symptoms. When fuel is drawn from the tank by the pump, air enters through the cap vent on these classics. If the vent isn't working right, It will run worse and worse as time goes on. When you stop it for a while, air can re-enter the tank and the car runs OK for a while again.

Try it without the cap and see what happens.

Dave J

My wife says if I buy another Mustang, she's gonna divorce me. I'm sure gonna miss her....
 
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