hi my first time here and i'd like to thank all the menbers for the info i get of this site. now for my problem i looking to buy a 69 riv and it has the fuel pump in tank and it doesn't work so i was wondering if you guys know a good place to find replacements or how hard is it you change to a mech fuel pump? does the cam in the 430 have the lobe for a mech fuel pump? and do i have to run diffents lines to make the swap? ty for all your help
Hi, just a quick question, did you try to get the pump to work directly (hook a batery up to it and listen for it to turn). If so you might want to check for a wire comming off of the fire wall on the drivers side, it should connect to what looks almost like a nail sticking out of the rear of the engine block, if that gets disconected the fuel pump won't run. (happened to me with mine) They'er not that hard to change if it is bad and are still available.
Mechanical pumps were obsoleted by quiet cold reliable HP saving even more cost effective intank electric pumps. At least in new cars. I agree with Klutz and if it is bad even if you are building the motor up for dramatically more power you should be able to upgrade it to a newer stronger more efficient pump for less money and work than buying and converting to a mechanical pump. Different car but fwiw I have had great success with the Walbro pumps both in my fuel injected GN and in my carberated big block g-body. Racetronix makes a drop in for them (G-body) and would be an excellent resource if you want to email them about any problems questions etc that you might have with your pump etc.
The problem in mounting a mechanical fuel pump in a 69 Riv is that the pump is on the drivers side and the fuel lines run along the passenger side. 68 Rivs had a mechanical, but have over 5 feet of rubber fuel line snaking inside the frame and engine cradle. Not a fun job to replace. My suggestion is to replace the existing pump. You dont even have to drop the tank. There is an access plate in the trunk to remove the sender and fuel pump. Its quick and relatively painless
There is also an inline fuse for it along the firewall, near the power brake booster. I think you can still get the pump at many parts stores. I seem to remember a discussion on the board some time ago about being able to substitute a pump for a Ford Ranger. Check out Yardley's site. Yardley's Buick Riviera Restoration Lots of good info.
If need be you can just buy a $20 inline fuel pump from autozone. They got a 6-8 PSI and a 12-14 PSI pump. Hook it up near a spot so the stock pump hot wire can be used.
Yeah, but you'll be cutting up the hard metal line to splice an aftermarket pump in. The 69 pumps can be changed in about 20 minutes without even getting dirty! Very easy to do and the pump is available everywhere. The 69 electric pump is supposed to only work when the starter is cranking or there is at least 3 lbs of oil pressure. Try hot wiring the pump and bypassing all that wiring in case it has gone bad. And yes, there's a tiny in-line 3 amp fuse over the brake booster under the hood. Check that too. Mine never worked right and I have spliced a keyed hot wire to it. Maybe next winter I'll wire it into the oil sender switch. I DO have it on a toggle switch under the dash so I can turn it off when I have to put the key to ON without pumping fuel. Running a mechanical pump, like was mentioned above is a plumbing nightmare!
thanks guys still looking at buying this thing so i have to see what the problem is then buy it and fix it or i will not get the deal. thanks again
another option If you cant find a stock replacement pump yardley has the part numbers for a pump that bolts directly in and supplies more pressure I cant remember the details even though I did it on mine, the stock pump could not quench my engines thirst for fuel. will
