The thing behind the fuel pump?

[Ando]

It is metal, cylindrical and slides in and a out. What is it called and what’s it for?

[ndutton]

It is a push rod that operates the mechanical fuel pump. It must be removed if you're using an electric fuel pump and blanking off the mechanical pump mounting location.

[Ando]

I assume I need to blank it off with a bolt of some kind. What size?

[Dave Neptune]

Ando, you will need to block the mount off with a plate held by the bolts that held the pump on. Is there a good reason for eliminating the pump? Many of us prefer the mechanical pump for safety and simplicity.

I've seen to many electric pumps start leaking and that's to the bilge and not the engine!

The mechanical pump is simple, reliable and can be operated manually when needed. It is also very easily to rebuild.

Dave Neptune

[Dave Neptune]

Ando, it's called a "push rod".

Dave Neptune

[Ando]

Hi Dave, thx for commenting. I’m at the tail end of a motor swap. The mech is in my garage waiting to be rebuilt so the elec is there so that I can finally start her up in the meantime.
Is plate you are referring to the same plate used as the mounting plate for the elec? Or is there a plate I put behind the elec pump mounting plate?
I should add that I took the pull rod out, but then put it back in bc I saw oil (or something like it) coming out of the hole.
I am now dreading having to take that mounting plate off to get back to that pull rod so that it can be extracted for the simple reason of that one darn aft bolt that is the hardest bolt to access and get any type of leverage on.

[Dave Neptune]

Ando, you will have to make a plate or buy one.

Dave Neptune

[Ando]

Originally Posted by Dave Neptune

Ando, you will have to make a plate or buy one.

Dave Neptune

Ok, thx. I think I have one now that I think of it (from my early model a4)

[sastanley]

The push rod is 'powered' by the cam shaft..it is definitely in an oil bath..Also, it will poke out proud of the block with every revolution, so it must be removed if you are taking off the mech pump. A 'block off plate' with gasket will cover the rod hole, avoid oil leakage, and use the old bolt holes for mounting.

If not mounting an electric pump in the same location, see this for more info: https://moyermarine.com/product/mech...er-fpmp_05_47/

If mounting an electric pump in the same location, see this for more info: https://moyermarine.com/product/elec...et-fpmp_03_45/

[Ando]

Originally Posted by sastanley

If not mounting an electric pump in the same location, see this for more info: https://moyermarine.com/product/mech...er-fpmp_05_47/

If mounting an electric pump in the same location, see this for more info: https://moyermarine.com/product/elec...et-fpmp_03_45/

Installing elec fuel pump in location formerly held by mech fuel pump: It doesn't look like the mounting bracket sufficiently seals the hole left by removal of the push pin. Looking at the blanking plate, however, there is a circular area there that seems like it would better seal the hole left by removal of the push pin. Questions:
1. Is it advisable (or even possible) to install the the mounting bracket on top of the blanking plate and then the elec fuel pump on top of that?
2. Is it possible (advisable) to install the elec fuel pump directly to the blanking plate (ie no mounting bracket at all)?
3. If I wanted to include both an electric fuel pump and a mech fuel pump:
a. would it be possible to install the mech fuel pump normally to the engine but have the fuel lines attached to the elec fuel pump? In other words, the elec fuel pump would be attached somewhere other than the engine (bulk head or whatever) and used as the main fuel delivery mechanism and the mech fuel pump would be used as readily available alternative should the elec fuel pump fail; and
b. If it is possible/advisable,
i. would that mean that the mech fuel pump would be subject to wear and tear (by operation of the push pin) for no reason and
ii. would there be any oil coming from the operation of the push pin that I'd have to consider and
iii. would I have to seal off the fuel input and outputs of the mech fuel pump for some reason?
4. Did I just open myself up to ridicule and condemnation? I can answer that

[SeaHarlequin]

Originally Posted by Ando

Is it advisable (or even possible) to install the the mounting bracket on top of the blanking plate and then the elec fuel pump on top of that?
2. Is it possible (advisable) to install the elec fuel pump directly to the blanking plate (ie no mounting bracket at all)?

I had a similar question recently and my understanding is that you would want to use either the mounting bracket (if installing the electric pump on the engine) or the blank plate (if installing the electric pump on a bulkhead -- if doing this, ground it).

Do you have the gasket for the mechanical pump? With the gasket in place, there should be a seal. Ken at Moyer recommended using a gasket sealer on both sides:
http://www.moyermarineforum.com/foru...90&postcount=2

[Ando]

Thanks for the reply SeaHarlequin, I did read your post too with much interest. In fact, I was thinking on posing my question on your thread if I didnt get any hits on this one. Yes I have the gasket. However, when I removed the mounting plate from my other engine there seemed to have some oil and gunk on the back of that mounting bracket despite the gasket being there. So I was thinking that maybe some of that oil n gunk came from that hole (where the push pin goes) and to seal it better. Hence my thought of putting the blanking plate, then the mount then the elec fuel pump. Maybe I'm just over-thinking it, huh?