Technical Low Buck Fuel Pressure Regulator

I would like to take down the fuel pressure going to my carb by a couple pounds. I have been having hard restarts when hot and when I went to remove the fuel line, it shot out all over the place, so the pressure looks pretty high. If I put a regular ball-type valve in the line and adjust it down, does that accomplish the same thing as a pressure regulator? I want to reduce the pressure and that seems like it would do it. Has anybody tried this approach?

 

Don't think so. That reduces flow, not pressure.

 

first thing put a gauge on it to see what your pressure actually is. it might be fine.
some sort of a valve would just decrease volume and not pressure...

 

A couple of guys who left Holley and started their own thing, make regulators as well...I think it was like 20 bucks?..They had 1-5psi and 4-10psi, if I recall.
Thing is I can't recall the name of the company!

 

Buy a cheapy & that is what you will get. Buy a Holley or another name brand product. You are messing around with fuel not water. One of these days we could see a post about your fire.

 

Install a fuel filter with a vapor return and run a return line back to the tank.

 

Interesting, I just posted a thread on this topic. Check it out, my experience may help.

https://www.jalopyjournal.com/forum/threads/fuel-pressure-regulators-and-issues-and-options.1068368/

FYI, no, a ball valve will not work, as somebody else posted above, that will only reduce flow, not pressure. If you close the valve enough to reduce pressure at idle, then when you open the throttle(s) the demand for fuel will rise, and pressure will drop off to nothing, starving the carb(s). Even the the Holley regulator I'm having a bit of this, though it has not caused a problem so far. But a ball valve, forget it.

 

Quick fuel, Mallory, mad, Holley, aeromotive all make adjustable regulators. But be careful about the regulators with a wide range of operation, they tend to have longevity issues.

Sent from my XT1585 using The H.A.M.B. mobile app

 

Go for something with a 20psi range.

Sent from my XT1585 using The H.A.M.B. mobile app

 

Step up.... Aero Space Products....pay me now or pay me later. Same with the gauge.....China = Junk.

 

Are you running a stock mechanical pump or an electric? What kind of carburetor? Any kind of insulator between the carb and intake? Are fuel lines routed away from heat sources like exhaust or coolant hoses?

This would be the right way to start diagnosing a problem like this instead of just throwing parts and money at it. Instead of a pressure problem you may have more of a heat problem. Or a bad needle and seat. Or a sunk float. Or a fuel tank that's not venting properly.

 

I installed a fuel return line tee'd into the carb entry fitting and used an .080" restrictor in it back to the tank. Still had plenty of fuel to the engine (460 Ford in a '46 pickup).