I'm not getting fuel to the engine, and I think I've found why. Attached is a pic of the fuel pump contacts (top of the unit, under the black rubber cap). The center section of the relay looks like it's broken. My questions: - does anyone know what this is supposed to look like? Does the center arm connect to the upper contact? - Someone mentioned airlock being a problem for the pump. How do you go about purging the pump if that's the problem? Thanks!
This is a common problem on these pumps, the filter gets blocked leading to the pump working harder which causes the pump contacts to burn and then stick together. This stops the pump, dressing up the contact faces and replacing the filter can effect a repair if this doesn't work the only solution is to replace the pump at a cost of ohmigod. Hope this helps and good luck.
if you can actually find a replacement pump... I can not find one for my 1985 vf1000R mine leaks badly.. and I have tried a coupld of ways to run it with out a pump... just does not work...
Try to clean the contacts as vifferj suggested, but you must be very, extremely, incredibly light-fingered cuz those parts are very easiy bent. just side some sandpaper in and out between the contacts but don't bend the fragile contact that floats on the copper-colored spring. the lower contact on the long arm should be touching the upper contact . look for the top of the shaft in the exact center of the device, spray some WD-40 down the hole, grab the top of the shaft with pliers and carefully pull it up about 2-3mm or just enough to see it move. air lock is NOT a problem with these pumps, but slow or obstructed fuel flow from the tank IS a common problem, so be sure that fuel flows easily and freely TO the pump.
I just bought a replacement pump. Search the forums here for info. Here's what I found 83 honda civic 1.3L fuel pump 83-86 honda magna fuel pump Honda nt650 fuel pump mid 80s yamaha xv650 In general electric inline fuel pumps on carburettor motorcycles are the same. Differences are in size and routing of hose fittings. They have a max (shutoff) fuel pressure of 3-4psi. Some have an extra vacuum hose. They all tend to have those annoying contact points like yours. Newer motorcycles stick the fuel pump inside the tank; those won't work for you. I went with an aftermarket solid state fuel pump.
This site still shows new fuel pumps are available. Honda Yamaha Suzuki Kawasaki Sea-Doo Can-Am Ski-Doo Motorcycle Parts ATV parts Scooter Parts personal watercraft parts Accessories Doc if you do file the points use a dielectric grease on the contacts. Prolongs sticking.
I see wemoto is offering a service kit (just the points) for about 20GBP (approx 35USD) in the UK plus shipping. Pretty cost effective c/f replacement of the whole pump Honda VFR 750 FL RC36 90 Fuel Pump Repair Kit - Point Switch
If I need a pump I'm trying one of these. Looks like a copy of the orig, even looks like the Mitsubishi pumps black cover, same line hook up, look like a vent tube for the points cover. LOW PRESSURE FUEL PUMP 12 VOLTS UNIVERSAL 2-4 PSI:eBay Motors (item 320432375208 end time Oct-10-09 17:49:17 PDT)
Captb - that pump may work but the orientation of the hoses is certainly different to my 90 VFR and from what I can see the unit appears longer to boot. That means rerouted fuel hoses at a minimum assuming you can make it package. This one looked OK too, but has similar caveats - New Universal 12V Electric Fuel Pump Kit - 20GPH Flow:eBay Motors (item 400077671777 end time Oct-17-09 12:24:00 PDT)
