Why do I have high fuel pressure...

[steve meltzer]

Point well taken, and, I was in a hurry. I'll pull the carb off the car (the nth time) and then I can get a great look, etc. Got some work (tho' generally fun, challenging and interesting) in front of me. Always something with these old cars. s

[steve meltzer]

OK, took the carb off the car and here are a few of the things I found:

1) the cam is def'n a red part #240 which, as was pointed out, is probably wrong for my carb. (no damn wonder my sox never match!)

2) I have some orange ones and a cream colored one. need to check the numbers.

3) The gasket at the bottom of the accelerator pump mechanism was torn.

4) As seen in these photos, the gasket that I have that interfaces between the carb body and the metering block was missing two orifices, so i just poked a hole in the gasket. As you can see, it's not very good. I just fixed this with a real punch, and it looks fine now (not in the photos). Not sure of it's importance in the circuitry.

[patrickt]

Originally Posted by steve meltzer

As seen in these photos, the gasket that I have that interfaces between the carb body and the metering block was missing two orifices, so i just poked a hole in the gasket. As you can see, it's not very good. I just fixed this with a real punch, and it looks fine now (not in the photos). Not sure of it's importance in the circuitry.

Uhhhh, no. That hole is always there on the main body, but it's only used when you have an auxiliary idle air bleed, which you don't. I don't think punching a hole in your gasket will make a difference one way or the other though, but test it out by putting a small straw in the hole and see if you can't blow through it. IOW, I think that's a dead end hole that does nothing. Try using the orange cam and use hole #1.

[steve meltzer]

I'm sucha moron! thanx. orange cam it is. more later when i get the delicate gasket for the A/P. thanx again.s

[Gaz64]

The metering block gasket does not need any holes as Patrick has mentioned.

Your accelerator pump diaphragm was torn? It would have had a fuel leak as well.

The red cam in pos 1 is just short of the orange cam in pos 1.

Nothing wrong with the red cam if it suits the engine tune.

The white cam is the smallest in delivery at any change in throttle angle.

Gary

[steve meltzer]

Originally Posted by Gaz64

The metering block gasket does not need any holes as Patrick has mentioned.

Your accelerator pump diaphragm was torn? It would have had a fuel leak as well.


The red cam in pos 1 is just short of the orange cam in pos 1.

Nothing wrong with the red cam if it suits the engine tune.



The white cam is the smallest in delivery at any change in throttle angle.

Gary

NO, i just explained it wrong. At the bottom of the nozzle/squirter is a small ? 1/4" gasket. it's torn. pump diaphragm is fine.

I've used that red cam for years, and the car ran great. I'll bet it's either the torn gasket or the vent rod was bent sl. out of whack. thanx. s

[patrickt]

Originally Posted by steve meltzer

NO, i just explained it wrong. At the bottom of the nozzle/squirter is a small ? 1/4" gasket. it's torn. pump diaphragm is fine.

I've used that red cam for years, and the car ran great. I'll bet it's either the torn gasket or the vent rod was bent sl. out of whack. thanx. s

Right, there's actually two gaskets for the squirter. AND, the plumb bob thingy. That's still there, right?

[patrickt]

I looked it up. It's called the Accelerator Pump Nozzle Check Needle. Gaskets go both above and below the squirter.