Folks,

My 83 4x4 seems to be lacking fuel pressure. No telling how old the electronic fuel pump (no manual unfortunately) is but does anyone have a set-up that works? It looks like you need about 5 PSI flow rate. The AC Delco has 4.5 PSI but any suggestions much appreciated.

 

So many questions...

We're talking about an '83 22R here or is this for a different engine?

What carburetor? Why is your 22R using an electric fuel pump? What is the part number/manufacturer of your current fuel pump?

What makes you think you have low fuel pressure? Do you have a regulator in-line? Does this setup run a return line to the tank?

 

It is a 22r (sorry)

Not sure brand it looks old

the previous owner screwed up manual pump threads badly

Thx for reply

 

Low pressure flow rate depends on the carb spec. You can use a fuel pump rated for more than the carb can flow but you need to be able to regulate the pressure and send the extra back to the tank.

I believe the stock Aisin carb is around 5psi. Holley is around 5psi. Weber is 3psi.

There are many very cheap low pressure fuel pumps (or expensive ones) available online. I would get a decent low pressure regulator and a low pressure gauge so you're not guessing about what's going on anymore.

 

Thank you - that's the plan