I dragged out my spare SPICA pump and set about investigating the threaded connections - so much easier when the pump is on the work table than in the car! It was a snap to remove the nut-retainer rings (one for each threaded output connection) and a 14 mm deep socket removed all the threaded connections from the pump. The threaded connector (are about 2" long) screws in about 3/4" into the pump body which makes for a deep hole and less likely that the connector would unscrew itself. The nut-retainer rings are to prevent them from doing just that.
The center of the hole is occupied by a removable 'jet' and there is a spring inside the threaded connector. Using a flashlight, I could see that there is a nylon-like O-ring at the base of the hole; the seal for the threaded connector. I tried all my variously shaped picks (about 8) but none could get underneath the seal to lift it out. Could be that it must be destroyed upon removal or I didn't have the Magic Tool. But nylon is pretty tough so I don't think it would just fail on me like it did. There seemed to be leftover threads of a sealing substance (plumber's teflon tape or pipe dope, perhaps) on the threads of the connector when I removed them. I didn't see much of it and there wasn't any in the hole on the pump. I've no idea if coating the thread with a sealer is correct or not. Bruce On Sat, Aug 18, 2012 at 5:51 PM, Bruce Giller <[email protected]> wrote: > > Whilst was adjusting the fuel pressure (with a pressure gauge on a > T-fitting described in Wes I's SPICA booklet) in the GTV to be between 8-10 > psi, I noticed that gas was running down the right side of the pump. The > engine was off and the fuel pump was the only electrical item that was ON. > Strangely, I couldn't smell the gas but saw where it was dripping down to > the ground off of the pump. > > I thought that the threaded barrels that hold the hard lines to the pump > were loose, so I re-torqued each one (15 ft lb) but it still leaked. The > gas was running out from under the small bracket that holds the nuts in > place which in turn hold the treaded output connections to the pump. I > think that only the threaded connection closest to the radiator is the one > that is leaking. I've never seen this before, the pump has always run > without any gas leaks. > > I've never messed with these threaded output connections but I gather that > there must be a seal of some sort underneath each one. Do you think that > retorquing the threaded output would fix it ? Is this something that I > can.should do ? Or does this indicate that there is something wrong deeper > inside the pump? I've already sent a note to Wes about this today. > > Obviously, I"m not going to continue trying to adjust the fuel pressure > until this is resolved since the leak affects the reading. > > Thanks, > > Bruce > > I've got another SPICA pump and I'm going to have a look at the threaded > output connector and see what is below it. -- to be removed from alfa, see http://www.digest.net/bin/digest-subs.cgi or email "unsubscribe alfa" to [email protected]
