I need a little help. Got out of the garage today, and noticed a fuel pump leak.
My 81 Fox Mustang runs a D6DE 6749 AB fuel pump, the return of the pre 1967 straight 6 Bronco style 170cid fuel pumps.
It leaks in the three positions arrowed
Most of you guys know that the 1967 onwards pumps without the vaccum canister for windscreen wipers changed the rocker point from above to below the cam shaft, even though it was the same pump and block boss.
Same thing happened in 1976, Ford, like AMC I think, changed the way the fuel pump sat. The new Fox body's sat the engine right down low, and had to clear the new rack and pinion power steering unit, so to preempt it, Ford changed the pump orientation back to the 1966 system starting around 1976. All foxes run an engine mount stay which hits the 67-75 upside down pumps fuel inlet and outlet lines, and the Foxes ran ther engine mounts back about 4" from the stock X shell postion.
My pump looks just like the left hand pump (a 72 AMC 401 item), while the 1967-75's look like the later AMC 258 type.
Mine is leaking at the joint face, but mostly through the breather line below. I've heard these can be lead plugged, but often, the screws back out.
Is it just a screw that needs tightening up, or is the diaphrams shot, and I'm getting fuel in my oil as well as leaking out side?.
How do I repair it?
I could just go to a SBC Carter Super Strip fuel pump and fit the D6 DE 6749 AB arm like hasa68mustang post in http://classicinlines.com/fuelpump.asp, but I don't need 120 gallons per hour of flow at 9psi line pressure.
I'm mindfull that the 3.3 has gotten 33 years out of a stock FoMoCo pump, so it s okay to throw some bux at it, but that new replacements although only US$30, might not be as good
eg https://www.youtube.com/watch?v=M6F3TVzYbAs
My 81 Fox Mustang runs a D6DE 6749 AB fuel pump, the return of the pre 1967 straight 6 Bronco style 170cid fuel pumps.
It leaks in the three positions arrowed
Most of you guys know that the 1967 onwards pumps without the vaccum canister for windscreen wipers changed the rocker point from above to below the cam shaft, even though it was the same pump and block boss.
Same thing happened in 1976, Ford, like AMC I think, changed the way the fuel pump sat. The new Fox body's sat the engine right down low, and had to clear the new rack and pinion power steering unit, so to preempt it, Ford changed the pump orientation back to the 1966 system starting around 1976. All foxes run an engine mount stay which hits the 67-75 upside down pumps fuel inlet and outlet lines, and the Foxes ran ther engine mounts back about 4" from the stock X shell postion.
My pump looks just like the left hand pump (a 72 AMC 401 item), while the 1967-75's look like the later AMC 258 type.
Mine is leaking at the joint face, but mostly through the breather line below. I've heard these can be lead plugged, but often, the screws back out.
Is it just a screw that needs tightening up, or is the diaphrams shot, and I'm getting fuel in my oil as well as leaking out side?.
How do I repair it?
I could just go to a SBC Carter Super Strip fuel pump and fit the D6 DE 6749 AB arm like hasa68mustang post in http://classicinlines.com/fuelpump.asp, but I don't need 120 gallons per hour of flow at 9psi line pressure.
I'm mindfull that the 3.3 has gotten 33 years out of a stock FoMoCo pump, so it s okay to throw some bux at it, but that new replacements although only US$30, might not be as good
eg https://www.youtube.com/watch?v=M6F3TVzYbAs