Fuel pressure regulator?

TS888

Almost the person my dog thinks I am...

Joined

Jul 30, 2011

Threads

37

Messages

815

Location

Dukes Valley, OR

• Apr 1, 2012

• #1

OK, I know the simple answer is "bypass it and see what happens."

So here's the question -- the PO installed a fuel pressure regulator in the line between the pump (stock 60 manual pump) and the carb. The carb is a Weber 32/36.

I can't see why a FPR is needed. The Aisin didn't need one, right?

 

J

Jason82FJ60

Joined

Mar 4, 2012

Threads

19

Messages

156

Location

Mobile, Al

• Apr 1, 2012

• #2

TS888 said:

OK, I know the simple answer is "bypass it and see what happens."

So here's the question -- the PO installed a fuel pressure regulator in the line between the pump (stock 60 manual pump) and the carb. The carb is a Weber 32/36.

I can't see why a FPR is needed. The Aisin didn't need one, right?

Click to expand...

mine dont have one. so i think the answer is no.

perhaps the FPR was installed to further tweak and/or fine tune the weber?

 

TS888

Almost the person my dog thinks I am...

Joined

Jul 30, 2011

Threads

37

Messages

815

Location

Dukes Valley, OR

• Apr 1, 2012

• Thread starter
• #3

My suspicion is that there were running problems due to the half-arsed desmog job, and the FPR was part of some attempt to deal with that. I'm not a carb newbie, and the desmog is now proper, so my expectation is I can remove the FPR. Another step toward simple...

 

M

Michael Hanson

Joined

Oct 30, 2007

Threads

833

Messages

10,866

Location

Plano texas

• Apr 1, 2012

• #4

Something is not right, dont see why you would need it.Trace the gas line all the way back to the tank, is there a elect. fuel pump added on? MIke

 

TS888

Almost the person my dog thinks I am...

Joined

Jul 30, 2011

Threads

37

Messages

815

Location

Dukes Valley, OR

• Apr 1, 2012

• Thread starter
• #5

Well, I know you're all on the edge of your seats...

It runs fine without the FPR. So off it comes!

 

klinetime574

TLCA #27404

SILVER Star

Joined

Jul 23, 2006

Threads

112

Messages

5,947

Location

Chicagoland, IL

• Apr 1, 2012

• #6

I never found a number for how much pressure the stock pump pushes. That's why I have a FPR. Weber needs 3lbs MAX. I assumed the stock one did more than that. Mine ran better with a FPR. But we're at different altitudes with different carbs.

 

ntsqd

technerd

Joined

Apr 26, 2007

Threads

93

Messages

7,086

Location

Upper So. CA

• Apr 1, 2012

• #7

Webers do NOT like much more than about 4 psi and some models run ideally as low as 2 psi. They tend to run rich with more pressure, and it's not uncommon at all that a carb pump will exceed that. No idea about the 2F fuel pump specifically, just generally that carb pumps put out more pressure than 4 psi. An adjustable FPR with a gauge so that you can set it while idling is a good thing with these carbs.