How noisy is your fuel pump?

[page62]

I've got a new mechanical fuel pump in my '62. It's a 70's-style pump. I've noticed it makes a pretty good sound at idle -- kinda like a noisy lifter. The noise goes away above idle, but I was just curious if others experience the same thing...

 

[wsa111]

You should not hear a tapping or a lifter noise from a mechanical fuel pump.
Check the arm return spring on the pump for proper tension & or missing.
Also check the camshaft eccentric for wear???
Advise from there.

 

[jamyers]

Should be pretty quiet all the time. If you've got your old pump, you might pull the new one and compare the arms to make sure they're the same.

 

[Bort62]

Mine made a lot of noise too, but I think it was trashed...

 

[page62]

Should be pretty quiet all the time. If you've got your old pump, you might pull the new one and compare the arms to make sure they're the same.

The old pump was a POS electric unit. Unreliable is the nicest word I can use to describe it!

I'm afraid to think the camshaft has wiped a fuel pump lobe...

 

[jamyers]

...I'm afraid to think the camshaft has wiped a fuel pump lobe...

Easy enough to check, pull the pump and stick your finger in there. As long as the lobe is nice and smooth (and has a "bump" to it) you should be fine.

Lotsa different versions of pumps fit these, some have the arm above the cam and some have it below. Might try a different version (I like the '63 version with the huge filter built on top).

 

[JackFish]

Didja put a little moly grease on the arm where it contacts the lobe when you put it in?

 

[CobraSix]

I'm like Jamyer, I like the early style with the filter on the pump. 65 mustangs had it as well.

But no, shouldn't be able to hear it at all.

 

[page62]

This is a later model pump, with the lever on top (I think). Which is reverse from the earlier pumps. I do know my 170 block is a later casting, because it can accept either type of pump. My original block only accepts the early pumps because of the configuration of the fuel pump mounting hole.

In any case, it's not serious. It's only audible at idle. This is more about my being curious than anything.

But of course, curiosity is closely related to "While I At It" disease. You know...while I'm at it I think I'll replace the cam; it'll be easier to pull the engine so while I'm at it I'll rebuild it; while the engine's out I think I'll rebuild the tranny...you get the idea!

 

[jamyers]

...But of course, curiosity is closely related to "While I At It" disease. You know...while I'm at it I think I'll replace the cam; it'll be easier to pull the engine so while I'm at it I'll rebuild it; while the engine's out I think I'll rebuild the tranny...you get the idea!

Oh, yes - the ancient and venerable "Shipwright's Disease".

As old as the wheel itself, actually.