Fuel Pump Leaking - Forums - Official C3 Vette Registry

SPONSOR AD

Support our Vendors! | Advertise Here

Topic: Fuel Pump Leaking

in Forum: C3 Fuel, Emission Control, and Exhaust Systems

Already a Member?
Login
Not yet a Member?
Register for Free!

Fuel Pump Leaking (1/3)
9/17/09 11:20pm

suncountry

Lifetime Member
Moderator
Send Private Message

Moses Lake, WA - USA

Vette(s):
1976 L48 4-spd, Mahogany Metalic exterior, Buckskin interior 350ci/350hp, 3rd owner, fiberglass spring, 255/50-16's Torq-Thrust II

Joined: 4/16/2005
Posts: 2134

Now that I have your attention. I put in a new Edlebrock Performer fuel pump when I put together the engine winter before last. Well I have been battling an oil leak around the fuel pump for a while now. I finally got to the root cause. The pump kept leaking oil out the diaphragm vent. Turns out the oil seal retainer was not properly staked in place and the seal fell out. This seal rides on the diaphragm push rod. To get to it you have to disassemble the pump housing. Unhook the diaphragm shaft from the actuator arm, then you can see the seal.

http://img.photobucket.com/albums/v200/suncountry/Engine%20Replacement/PICT0051.jpg

I put the seal back in place, staked the retainer down and reassemble. The hard part was getting the fuel pump back on the engine. My block was not machined with the tapped hole used for holding the pump push rod in place. Had to resort to pulling the rod and putting grease on it to make it stay in place.

So if you find oil leaking out the breather, pull the pump and go looking for this seal.

Quote

Our Sponsors help support C3VR

Fuel Pump Leaking (2/3)
9/17/09 11:30pm

Adams' Apple

Lifetime Member
Moderator
Send Private Message

Duncanville, TX - USA

Vette(s):
#1-1974 L-48 4spd Cp Med Red Metallic/Black deluxe int w/AC/tilt/tele./p/w-p/b/ Am-Fm/map light National/Regional/Chapter NCRS "Top Flight" #2-1985 Bright Red/Carmine Cp.L-98/auto Member: NCRS, NCRS Texas, Corvette Legends of Texas

Joined: 11/8/2003
Posts: 20129

Nice that you can take the pump apart, and fix it, even tho it's a pita, considering it was a new part.
Good job, and thanx for the pic! Thumbs Up

______________

Joel Adams
C3VR Lifetime Member #56
My Link

(click for Texas-sized view!) NCRS

"Money can't buy happiness -- but somehow it's more comforting to cry in a CORVETTE than in a Kia"

Quote

Fuel Pump Leaking (3/3)
9/19/09 10:52pm

aceinthehole

Lifetime Member
Send Private Message

Manteca, CA - USA

Vette(s):
1978,two tone,Metalic Rootbeer & gold 1975 L48 4 speed

Joined: 11/20/2005
Posts: 3623

Yeah, that's a shame you had to go through that Glen. We buy the best so things like that don't happen,but, even the best laid plans of mice and men............ Good thing you're sharp enough to handle that without further expense at least. Way to go Thumbs Up

.

______________

Jimmy B.
Just can't wait to get on the road again.

Click to see larger views!

Quote

Our Sponsors help support C3VR