Adjusting fuel pressure on new fuel system
I just finished my new fuel system with -8AN from the sump to the regulator and -6AN from regulator to carb. I also have a Holley blue with regulator.
The instructions with the regulator says it's factory set at 14psi, which is too much for me. How much should I turn the adjustment screw back before I fire the engine.....1/2 turn...full turn? I want it at around 6psi for now. |
Re: Adjusting fuel pressure on new fuel system
Just put a gauge on it then you have no worries. If you don't have one, an old mechanical oil pressure gauge will get you close enough.
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Re: Adjusting fuel pressure on new fuel system
Loosen the lock nut on the adjuster, then back out the adjuster itself, most of the way. That'll get you around 0-1 psi. Fire up the pump, run the adjuster in until you get your 6 psi, then set the lock nut. Presto! ;)
So we're close to firing then???? I can't wait!!!! Keep us posted bro! |
Re: Adjusting fuel pressure on new fuel system
Should be ready to fire up tonight after work. All I need to do is put some fuel in the tank. I could have done it last night but I wasn't sure about the regulator situation and wanted to do it during daylight to better check for any leaks.
I'll keep you posted. Bill, you probably just as excited as I am ...huh? :D |
Re: Adjusting fuel pressure on new fuel system
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Re: Adjusting fuel pressure on new fuel system
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I'm heading out to the garge now to fill her up and fire her up! Tune in later on for the results! |
Re: Adjusting fuel pressure on new fuel system
I got it started up tonight! There were no leaks at all! That holley pump is noisy as hell! I hear it over the exhaust inside the car!
We're talkin 2.5 exhaust with single chamber flowmasters! I set pressure at 6psi, let it warm up a little and then noticed it dropped to 4psi. I turned it back up to 6 again and it dropped again! Did the same thing all over again until it stayed at 6psi. I went to turn the idle speed down just a tad and it make a noise almost like a detonation ping. When it turned it back up, it went away. What was that pinging sound? Is it going to want a certain idle speed now? I didn't notice what the rpms were at though. One thing that I will HAVE to figure out later on is why my fuel gauge doesn't work anymore. I made sure I plugged the original sending unit back into the tank when I put the tank up. I checked the fuses and they're all good. I don't know but I need a gauge! A test drive is going to have to wait until tomorrow or the weekend. |
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