Guest Oldie & Goodie Posted January 10, 2012 Share Posted January 10, 2012 When we went to put our 51 to bed for the central NY winter, our last stop was to fill up the tank and add some stay-bil. Walking out of the gas station I noticed a puddle under the engine and didn't remember it being there when I pulled in. Made it home and left her in the driveway for a while. Went back out after an hour and found that the puddle had followed us home. Fired her up and it looks like the fuel pump is leaking. Can't tell if it's cracked or leaking at the seam. It almost looks like the gas is coming out of a rectangular notch right in the center of the pump.Is this a candidate for a gasket kit and if so is there much to it? Or is it best to remove it and send it out for a rebuild?Thanks Link to comment Share on other sites More sharing options...
Guest Straight eight Posted January 12, 2012 Share Posted January 12, 2012 Its best to have it rebuilt. Today's fuels contain so many additives that are not friendly to our older rubber fuel pump diaphragms, it just makes good sense to have modern materials used that will fight off the hazzards of that nasty ole ethanol.As a sidelight some of that gas could be going into the crankcase which would delute the oil. Think it would be best to take off the fuel pump, get her rebuilt, and change the oil using care to get oil with a zinc additive, or purchase some and add per directions. Link to comment Share on other sites More sharing options...
Guest Oldie & Goodie Posted January 12, 2012 Share Posted January 12, 2012 Any recommendations on a rebuilder? Checked Bob's for one and they have neither the pump or the kit. Link to comment Share on other sites More sharing options...
Guest shorttimer Posted January 12, 2012 Share Posted January 12, 2012 I have not used these guys myself, but they should have a kit for you or be able to rebuild your unit.Antique Auto Parts Cellar Link to comment Share on other sites More sharing options...
Guest shadetree77 Posted January 12, 2012 Share Posted January 12, 2012 Machine Shop Services | Hagen's Hiway Auto Parts, Inc.Try this place. I got my master cylinder re-sleeved and re-built here and they did a great job. Fast turnaround too. They re-build everything from fuel pumps to headlight relays. I plan on sending them my pump soon. Link to comment Share on other sites More sharing options...
Patrick W. Brooks Posted January 12, 2012 Share Posted January 12, 2012 It is almost certain that the rubbler diaphram is cracked and needs to be replaced with a neophrene diaphram which is resistant to the modern additives in our gasoline. I strongly recommend John Plaskan who does business as Antique Auto Parts and supplies kits for carbs, water pumps, fuel pumps, master and wheel cylinders and more. He sets up at all the major swap meets and is very well organized and professional as well as very knowledgable. I have bought many kits from him and he responds to questions and is very willing to accept returns if you are confused and furnish the right parts later to help. He has a large library to support his assembly of kits which are of new parts not used. He only provides new neophrene rubber and everything I have purchased from him has been exactly right. His phone number is 813-713-5820 and he answers and returns calls promptly. I install the kits myself after working with a mechanic the first time to do a fuel pump. Another suggestion, the fuel pump is a task to remove as it is located next to the right shock and the bolts and attachments are hard to reach and cannot easily be seen. After removal I cut the fuel line and put brass fittings above the fuel pump which allows me to install the bottom part of the fuel line with the pump out and then install it with everything tightened and lined-up. GOOD LUCK, Patrick W. Brooks:) Link to comment Share on other sites More sharing options...
55 SURVIVOR Posted January 13, 2012 Share Posted January 13, 2012 I have used ANTIQUE AUTO PARTS CELLAR they are actually called THEN AND NOW AUTOMOTIVE,in Weymouth MASS. #781-335-8860 or just google THEN AND NOW AUTOMOTIVE they have a good web site and have many other services but specialize in pumps and carbs.I had my double pump and carb done by them with ethanol friendly parts,no problems what so ever!! Link to comment Share on other sites More sharing options...
Guest Oldie & Goodie Posted January 14, 2012 Share Posted January 14, 2012 Thanks for the recommendations. Since I'm in upstate NY think I'll give the outfit in MA a shot, once I get it pulled. Link to comment Share on other sites More sharing options...
buick man Posted January 15, 2012 Share Posted January 15, 2012 Just Remember. The chemistry that provides protection in Stabil by preventing fuel from turning into varnish/lacquer DOES NOT help keep water from saturating the hydro friendly gas a corn. When you store using ethanol as a fuel ie: R-C-OH, then equals R-CH + H2O, you are inviting rust and water. It is basic chemistry. Don't let anyone tell you different.One Time Investment: Instead, fill your tank with kerosene with 1 gallon of Marvel Mystery Oil mixed in, and fill up to spout of the gas tank and cap. In the spring, drain, then flush with a gallon of gas and keep the kerosene/Marvel Mystery Oil admixture for the next years storage for so on and so forth to be used over and over again.Never have storage, rust or starting problems ever again. Link to comment Share on other sites More sharing options...
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