[Roadsters] One quick question left

[jrdmf at aol.com]

There are also a couple of check valves and seals that can go bad so if?you're gonna tear it apart then you might as well check those too. The seals are basically paper gaskets between the check valve and the housing?and if they fail then you get no suck or blow. Same goes for the valves and you can check them?out?before you tear it apart?by pumping the?lever with your hand while placing something over the inlet?tube to?see if it pulls and then the?outlet tube to see if it push's. (I wore latex gloves so it provides?a pretty good seal.) The inlet tube should only pull with no pushing on the opposite stroke and the outlet tube should only?push with no?pulling. If you notice either of them doing both then one of the valves or seals has failed. Don't know if new valves and seals are availiable but I just used parts I had?from other pumps I had laying around.

?

Hope it helps?

?

Jon



-----Original Message-----
From: Mike Harper <roadsterdude1600 at yahoo.com>
To: datsun-roadsters: autox.team.net <datsun-roadsters at autox.team.net>; Tim <tputland at charter.net>
Sent: Sat, Aug 1, 2009 5:49 am
Subject: Re: [Roadsters] One quick question left



If the arm of the pump functions well, the only thing that should go "bad" would 
be the diaphram.  Some fuel pumps have a series of screws and can be 
disassembled to replace the diaphram.  If you have one of these you can inspect 
it, or replace it before installation. The other type is sealed, and a 
throw-away if it fails.  Replacement diaphrams are available.  As far as "bench 
testing, I would not know a good way to do that on a mechanical fuel pump, but 
it is not a difficult r&r if it turns out to be "bad".

Mike Harper
--- On Sat, 8/1/09, Tim <tputland at charter.net> wrote:

> From: Tim <tputland at charter.net>
> Subject: [Roadsters] One quick question left
> To: "datsun-roadsters: autox.team.net" <datsun-roadsters at autox.team.net>
> Date: Saturday, August 1, 2009, 8:30 AM
> I found the cap at NAPA--thanks Jim
> for the quick answer. 
> 
> But no one mentioned testing the fuel pump. Can this be
> done off the car somehow? I don't want to install a pump
> just to find out it is bad as well. 
> 
> Tim
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