I wish I hadn't started this, now...

Putting a used main fuel pump on there just to see if that's what it is. Got the connections back together, and fuel keeps running out the end of the fuel pump where the check valve and pipe to the filter hook on, even though I tightened everything. Am I missing some washer or something that's supposed to go on there??? God, I wish I hadn't started this!

If you don't anneal the copper washers or use new ones they are likely to leak (IME always leak).
--
240 drivers & parts cars - Ohio

Is the new Bosch pump from FCP gonna come with new washers? It didn't show any in the picture.

It will come with a washer for the check valve, if you are replacing the fuel filter you will need 2 of each size. The connection to the check valve from the filter does not have a washer.
Dan

I had the exact same situation with my 91. The pump came off the car a couple years earlier, and was not leaking. But when I put it back on, it was leaking like a sieve, at the crimp. Bought a new one.

On the other hand, I did the same thing with a pump from my 740 and didnt have a problem. The pump is still on there.

I guess the big question is: how does a fuel pump develop a leak, while sitting on the shelf?

Larue

So maybe it wasn't The Boy's fault this time :-)

Yeah, I said "dripping", but it was pretty much gushing gas any time the pump wasn't above the tray level. Trying to get all that stuff situated in the short space between the slightly-jacked-up car and the driveway, while gas was running everywhere: not fun.

So it won't be as bad to change the fuel pump / filter as I thought it would be -- at least if you have a pump that doesn't leak! All that pinching of the gas lines makes me nervous, though. One book says to "be careful not to crush" the fuel lines when you clamp them shut. I used a spring-loaded squeeze wood clamp, hoping that wouldn't put too much pressure on it. But I don't think it really closed the gas line, either...

Jomarex,
I dont know how most do it, but I remove the tray from the car and take it to the bench. The first couple times I tried doing it in place, but found that, for me, removing it is much better.

Vice grips clamped over some thick cardboard, or a couple small flat pieces of wood shut the fuel flow off nicely, Without damage to the fuel line.

Im still waiting for the explanation of how my pump develop a leak sitting on the shelf.

Hope all turns out well

Larue

"All that pinching of the gas lines makes me nervous, though. One book says to "be careful not to crush" the fuel lines when you clamp them shut."
A simple/effective tool is something like your wood clamp--without any sharp edges----use a small needle nose vise-grip type pliers---cheap ones will work just as well as expensive ones---use two small lengths of fuel hose fitted over the jaws to cushion the clamped area. BTW--I just replaced the fuel pump in my '84 245 GLT Turbo for the same reason--seeping at the crimp. Replaced it with the uneeded one from my "new" V8 245 body--a '93 that hasn't run in at least 6 years. Maybe sitting in the chassis with gas in it helped--the GLT fired right up--no leaks. -- Dave

I will, in the end, defer to those who earn their living doing what I dabble in, but it doesn't stop me from asking questions.

Now, all that talk of pinching hoses has me nervous. In an '89, as contrasted with my GLT turbo, there's only one fuel hose one would contemplate using a clamp on -- the 12mm feed line from the tank pump. The '89's remaining hoses are of a hard nylon, and whether new or old, I can't imagine that stuff is meant to be crushed.

I don't clamp that one feed hose because it is 25 years old and hard to get except from the dealer parts department. And, even though our habits are to keep more fuel than vapor in the tanks, it has never wanted to empty my tank siphoning up through the tank pump. I don't want hose deterioration or any other crud built up on the inner walls of that hose sloughing off and becoming grist for the precision rollers in the high pressure main pump. A shallow pan easily contains the fuel from the pump body and what drains back from the disconnected filter. If the feed hose continues to drip, which has not been my experience, a short 3/8" drive extension will serve as a cork.

--
Art Benstein near Baltimore

If lawyers are disbarred and clergymen defrocked, doesn't it follow that electricians can be delighted, musicians denoted, cowboys deranged, models deposed, tree surgeons debarked, and dry cleaners depressed?

Art, Just to clarify what I wrote--the feed hose to the pump is the only one I would attempt to clamp--trying to clamp any of the "hard" line hoses would probably end in disaster. -- Dave

There should be 2 copper crush washers, one on each side of the banjo fitting
Dan

Maybe my son kicked this pump around after he took it out of the green car awhile back (I was stupidly just replacing things...). It kinda looked like the gas was coming out of the crimped seam. Crap.

That's not a good sign!
Dan