How To Choose A Regulator for Carbureted Vehicles

Choosing the correct Fuel pressure regulator won’t raise your blood pressure if you know
what to look for!

When choosing a fuel pressure regulator for your ride, you need to take into consideration
several factors. The regulator is a critical piece and should to be matched to the type of fuel
delivery system and the fuel pump that you are using or plan to use. This video will help
explain fuel pressure regulators that were designed for use with a carburetor.

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[robm]

Finally after so much research I found someone that knows what the hell they're doing

[mafosa]

Glad Holley finally taking a active roll on videos.

Keepem coming!

Larry

[hawiianpwr]

Great video, very informative. Thanks!

[gmans]

What is the rule of thumb as to the size of the 'Return' Line vs the 'Feed' Line? I feel it's time to move on from my current DeadHead set up and plumb a return.

[Packer]

I have a 770 Avenger. carb and the 12-803 regulator. Is there a benefit to running one outlet of the regulator to the primary fuel bowl and the 2nd outlet to the secondary? I currently have one outlet of the regulator feeding both fuel bowls with the 2nd outlet blocked off.

[Keegan_Lynch]

I bought the Holley Red pump rated for 7 psi for my sbc 350 with a Holley 4150 650 CFM. Had the issue where the pump would keep pumping fuel all the way through the carb and flood it. Sound like some a deadhead regulator could handle or should I be safe and run a return line?

[Dodgechallengersixpack]

Which bypass regulator is recommended for 6 pack setup?

[lauradahlus]

Could you recommend a fpr for a TBI gen1 chevy 4.3 v6 that needs 13psi?
Thanks for your video

[HorsepowerHouse]

(DECEMBER 2022) The 12-803 regulator that comes with the Blue Fuel Pump is defective. Tons of people complain about it. Will you replace it for just the regulator??

[cyberdude]

when mounting a bypass regulator down stream of carb inlet plugging the outlet side of regulator is not an issue?

[matthatesford]

I have a question. In a return style system..What is the difference in using a deadhead regulator post carb vs a bypass regulator post carb? In my head its doing the same thing but for 1/4 the price

[hgvenom]

Hi, I would like to replace the original low pressure vacuum fuel pump for an in-line electric fuel pump on my outboard in order to deliver fuel from the tank to the high-pressure pump-evaporator, which fuel pressure regulator could be used between my fuel tank and my high-pressure pump-evaporator?
The low pressure pump must operate between 2 and 4 psi of pressure.
This will eliminate prime the fuel manually and avoid to buy an expensive low pressure vacuum fuel pump OE replacement part.

[BloodySniper]

Why does the Holley 12-803 regulator state in the instructions not to use it with a mechanical fuel pump

[marsv]

Hi there, at the 4"45" mark you show a QFT 4 Port Bypass regulator ( Claimed ) but I cannot find a QFT Bypass regulator like this . Do you have a part number for QFT 4 Port Bypass regulator. Thank you.

[Engineerboy]

Killed it on the video, yeah he was reading, .... but very well. I hope you sell a lot of Holley!

[craphittingthefan]

I just bought the by-pass regulator #12-881 and hooked it up just like the instructions say to and I cant get the pressure down the gauge goes to max pressure even backing the adjuster all the way out, I am using holley blue pump my dead head regulator did not do this at least I can adjust it, I have switched the return line with fuel supply and it goes to zero pressure or max still cant adjust it maybe I have the wrong regulator for my carb and pump?

[fuelbasti]

Cannot find this fuel system selection chart on your webside. Maybe someone read this and help out.

[beginnerbeginner]

Hope you can help I changed from mechanical to inline electric my trouble is the engine starts and runs for about 15 to 30 seconds then hesitates then stops. starting an hour later.the truck is chev 305 with spectra premium pump.does it sound like it needs a regulator.

[cesarconh]

I already have a regulator for my carburetor, I need a fuel gauge that bolts on to the regulator to see when get to 3 psi that I need

[calebkey]

What regulator is recommended on a mechanical pump with a vent on the pump itself? (Chevrolet)