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Fuel pump sound

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Hi all,

I had a problem with my fuel pump causing it to "stop" all the time. When I'd hit it with the back of a screwdriver it would make the fast ticking sound again.

So I took the fuel pump off, opened it, readjusted the diaphram (close it all the way, open it untill the on/off thing at the other side would come loose, open it further to align the holes, turn it 2/3 further (it says 1/4 but there are six holes so this seems to be impossible?!) and put the pump back under my car.

When I disconnect the outlet fuel tube it starts spitting a lot of fuel. So that seems to work. When I connect it however I hear:

Tick tick (within one second) .. three seconds of silence .. tick tick (again within one second) etc.

Within my filter I do see fuel getting in every time it "pumps". It does not get all the way full or something however (not sure if I should expect that). It fills around 1/3 it seems. Probably just enough to get a direct line with the outflow tube.

My question now is whether it's working properly or not. I expected a lot more ticking.

The pump itself is all new (no wear at all) so I don't expect any contacts to be wrong or something. All that I may have done wrong is the adjustment of the diaphram. Without the hoses connected it does "tick" quite a bit though.

Shall I give driving an attempt? There is not many people around here that can tow me if it breaks down again so I do like to verify I have an acceptable sound from the pump right now.

Hope people can respond asap so I know what I am up to /ubbthreads/images/graemlins/smile.gif
 
Dreas, that is the way the pump should sound. It pumps until it builds pressure and then quits, that is why you hear it running so much with the hose disconnected.
Drive it!
Jeff
 
[ QUOTE ]
...Within my filter I do see fuel getting in every time it "pumps". It does not get all the way full...

[/ QUOTE ]

And, contrary to what one might expect, that filter housing just fills partway. Once fuel is moving out of it, it gets no fuller.
 
As for the fuel filter, what happens is that it is basically 'air locked'. If it is stood on end, it will fill up!
 
You've already performed one of two tests that should help reassure yourself - you disconnected the discharge hose and the pump flowed fuel. The other would be to disconnect the hose and connect a fuel pressure guage to determine at what pressure the pump stops. I don't recall what pressure is listed in the specs, but I'm guessing it will be about 5psi. If you have something near that, you should be good to go.


Mike /ubbthreads/images/graemlins/patriot.gif
 
[ QUOTE ]
You've already performed one of two tests that should help reassure yourself - you disconnected the discharge hose and the pump flowed fuel. The other would be to disconnect the hose and connect a fuel pressure guage to determine at what pressure the pump stops. I don't recall what pressure is listed in the specs, but I'm guessing it will be about 5psi. If you have something near that, you should be good to go.

Mike /ubbthreads/images/graemlins/patriot.gif

[/ QUOTE ]

More like 2 lbs or less
Bob
 
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