1993 Dodge Dakota Excessive Fuel Pressure

CRASHOF2005

MEMBER
1993 DODGE DAKOTA
V8
2WD
MANUAL
121,000 MILES

I have an V8 360 out of a 1987 Ramcharger, a 1992 magnum head, a edelbrock rpm air gap intake manifold, and a 600cfm holley carb w/ electric choke.

. Ok on with the question

I am having excessive fuel pressure on my truck, which is causing the carburetor to flood when I push on the brakes. I have checked the fuel pressure regulator and it is fine. I have the mallory 4309 with the adjustment screw all the way out pressure is supposed to be 3 psi. It is about 8 psi. So to correct the problem I attached a 1/2" Fuel line to the return line on the regulator and then clamped it onto the metal fuel line under the truck.

My question is when I did that I noticed that the old fuel line was connected to a small metal gas line. This model truck used to be Fuel Injected. Should the Return line be metal because after I did that the fuel pressure did not really change from what it was before. Already verified w two gages. If you can think of any other ways to lower fuel pressure, please reply

Thanks for your time

2 Replies

BLACKOP555

MECHANIC
10,371 POSTS

The fuel pump is made to supply high pressure, and maybe you can try to find a low pressure fuel pressure regulator some how, other then that I wouldnt know of anyway to decrease it, you could put a smaller diameter line to get less volume and that might help you.

The return lines are usually metal then the splice into a rubber line.