Before I buy another fuel gauge

[HawkX66]

Originally Posted by big gear head

I had this problem several years ago when working on a '68 Camaro with a 396. I put a high volume electric pump on it with a bypass regulator. I thought that the #8 supply line and the #6 return line would work fine, but it didn't. Same problem that you are having. I couldn't get the pressure low enough. I had to install a #8 return line and then everything worked great.

That was my gut feeling. 1/4" just seemed too small. The funny thing is, or not so funny I guess, is that the tank's sending unit has a 1/4" return. I might have to drill for a bulkhead fitting so I can up the size. I was just thinking also, the 1/4" is probably fine if you're actually running fuel injection.

Originally Posted by livettes

Double check to be sure the nipple of the gauge is not screwed too deep into the regulator. They can sometimes block the travel of the diaphragm as well.
Jamie

Thanks for that Jamie. I'll definitely check it out first.