set fuel pressure with engine running
Well, I got the car started after putting a few drops of gas in the carb & it dies after about 7 seconds. it burns the gas I put in & then runs a little longer & dies. I adjusted the regulator & float bowls but no luck. Anybody have any ideas? Thankswhat do yawll think? I just rebuilt my fuel system.
-added a return line from a new added regulator ( was putting out about 9 or 10 lbs so I incorporated the regulator)
- running a 4160 750 Holley
- new niccop hard line
- using the mechanical pump
-ran my lines on the outside of the frame with 100 micron filter near the back & 30 micron right before carb.
- rebuilt carb
about to fire up, just got to get gas.
Is there anything I'm missing?
I bypassed the regulator & going through a 30 micron filter directly to carb & now will not fire up at all. Almost seems like to much gas, I've adjusted fuel bowls a few times & still nothing.Of course battery dies & have3 to charge & wait.Can also get small squirt bottle like a round ketchup one and fill bowls with fuel thru vent. Helps give the carb a little time to get air out of fuel system.
return was 3/8how big is the return line and did you put an orifice on the return line. you might be flowing all the fuel back to the tank.
What's the inside diameter of your fuel supply line to the carb? Sort of sounds like it's just barely able to keep up with the carb. Regardless of the pressure, insufficient volume won't work well.So back at it, I took off the regulator & return line , I have great flow to the carb at about 6 psi. The car starts right up & idles good but then dies when I hit the throttle. ???????????????????????????? On my way to the nut house.
Holley 4160 750, with a mild racing cam (all I was told) 350 SBC.exactly what carburetor, cam, ignition timing, comression, engine size etc.
Yes, squirts fuelIf you look down the carb with motor off, when you crack the throttle, do you see the squirter’s shooting fuel into front two throttle bores. If it just sort of dies, usually fuel related. Accelerator pump and squirter provides the fuel to cover up for cracking the throttle blades open (very simplified explanation for the pros on here).
3/8 line, I took of the line just before carb & turned over & it was pumping the full ID of the line.What's the inside diameter of your fuel supply line to the carb? Sort of sounds like it's just barely able to keep up with the carb. Regardless of the pressure, insufficient volume won't work well.
This^^^^^And of course, triple check to be sure the regulator is plumbed correctly.
I was using the same size NiCop fuel line before I changed to flexible armored lines and AN fittings. When I removed the NiCop lines I found that there was a hidden kink in one bend. That had cut way down on the amount of fuel that the line could flow. Did your NiCop line go in before or after you started seeing this issue? Has it always done this? Did you change anything just prior to the start of the problem?3/8 line, I took of the line just before carb & turned over & it was pumping the full ID of the line.