fuel pressure regulator problems:

My gas tank was usually empty and there was a damp spot on the floor. Then I was told that all of the little round regulators slowly leak gasoline. Aside from that, they work very well.

If the pressure regulator is moved to a loop in the fuel line above the fuel tank, fuel can not leak while the pump is off.

This does not solve leaks while the electric pump is on.

The basic problem is that the Chinese seem to be making regulators which do not withstand 10% ethanol in the gasoline.

So if anyone has a soluton to pressure regulator leaks, please let me know. The stock fuel pump can't be used after you change the cam on older 1200 engines as the fuel pump lobe for them is at the front but thre newer engines hav it toward the center of the cam.

So you're using an electric fuel pump over the standard pump and needing a fuel regulator to stem the pressure?

Might be worth the hassle of changing the cam or maybe buying one of those low pressure electric facet pumps?

Have you got a picture of the type of regulator you're using?

Solutions include:
* fit the correct camshaft with stock or aftermarket grind
* fit a suitable electric fuel pump for carburetor (3.5 psi)
* fit a quality fuel regulator

Also install a fire extinguisher! I have two fitted to my car, paranoia perhaps.

I have been using E85 fuel in my race coupe for a year now with no problems
Used ethanol fuel line and electric pump and regulator all capable of running 85%ethanol pump and regulator are from AERO FLOW on Ebay.GREG

Excellent point about the fire extinguishers. I had a fuel line fire in a van.

And yes, the standard pump is good with a stock camshaft. I should have stayed with the Datsun cam.

I am using 2 facet pumps and a cylindrical one on 3 cars, just checked Facet make 33 different pumps ...the store only had 2 types. There is a screw that one can dig down to on them, I think it controlls pressure and is adjusted at the factory.

I can take photos of the regulators...they are the two most common kinds in the usa.