Suddenly lost prime under power???

[Hammy]

How do you find a bad seal shaft, if it is sucking air through it and staying dry on the outside, appearing not to be leaking? :?

[dieseltech]

the easiest way i have found the seal leak was to install a electric fuel pump between the filter and inj pump   start it and let it idle for a bit then shut the car off and feed power to the pump for a few min without the car running, then take the pump pully off and see if its wet.

you can also try putting a heavy grease (wheel bearing grease) int the shaft where the seal is and put it together, see if the problem goes away for a bit untill the grease melts off.

dunno any other way, usualy if i have gone that far i put a new one in anyway. its only $8.

[Hammy]

That's what I was thinking also, just to change it.  I tried cleaning the copper washers and it still had air bubbles. So, I backed off the banjo bolt, retightened it, and the air stopped. I was getting worried that I was going to break the banjo bolt though. Everything seems good now. Thanks for all your help Dieseltech.

[dieseltech]

aahhh yes the copper washers. i usually change the every time, simply because they are crush washers and they can only be compressed 1 time sometimes 2 if your lucky, but again $2 for all 4 copper washers, i usually have spare on hand. best of luck
anytime i can help.
chris

[fspGTD]

I have sanded them down flat before and re-used them.  (The copper crushwashers.)  I just used a fairly fine sandpaper on something flat like glass, and sand the copper washers back and forth until the freshly sanded surface is completely even.  Then thoroughly wash away any copper particles and it's ready to be re-used.

I've heard the copper can also be made soft again so it can be re-used, by annealing them (would that be heating them to a certain temperature?) but haven't tried that approach.