Fuel pressure regulator

[Lenny51]

I just installed the E8902 electric fuel pump when my 51 sits for a week or
more its hard starting . I have two 94 on a offy intake I installed a toggle
switch .will I need a regulator ? also I have a new double action fuel pump
Thank you for any help in this . still 6 Volt

[adileo]

Have almost same exact same hardware on my 39. No regulator (only difference I removed mech pump) and no problem. After week, turn car on, one pump to floor and car starts right up.

[Angledrive]

That is only a 4 psi pump. You really don't need a regulator if you are just priming the carb. On my Hobby Shop member cars I use a momentary switch so they will not leave it on. Run it for 15 to 30 seconds and you will be good to go.

[mike42]

I use a Holly reg with a sight gauge and keep the PSI around 2#. It works perfect.

[42guy]

My set up is like mike 42

[Joe Immler]

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I have an E8902 on my '41 and use the same procedure as angledrive wrote. Works just fine. Has been on the car for 4 years.

[Pat/Ohio]

I have the Airtex E8902 pumps installed on my '32 & '50 without the fuel regulator. Works fine. I use primarily for priming. I also recommend the "momentary" toggle switch, however; when driving in city traffic...you may need to keep your finger on the toggle switch to engage the fuel pump for longer periods (vapor lock). I removed the momentary toggle switch from my '50 in favor of a "momentary-off-on" toggle switch. Works great when you are experiencing vapor lock situations. I can't drive through Atlanta, GA without vapor locking it seems. Good luck, Pat

[Drbrown]

For many years I've had an Airtex pump and don't use a pressure regulator. It puts out 3 psi when measured at the outlet of the mechanical pump (engine not running). I use it to prime the carb at start-up.

My mechanical pump also puts out 3 psi.

I understand 3 psi is at the upper recommended limits for a stock one-carb 59AB.