Topic: leak at fuel pump
in Forum: C3 Fuel, Emission Control, and Exhaust Systems
Already a Member?
Click Here to Login
Not yet a Member?
Click Here to Register for Free!
Lifetime MemberIf you didn't know, I had the fuel pump replaced 3 weeks ago and it got rid of my fuel leak problem.
Well, the problem is back; one of the line under the fuel pump was leaking at the rate of one drop every 3 seconds.
3 things;
-It looks like the line is 1/4 inch too short; which makes the rubber line a little bit oval instead of hugging the fuel pump pipe.
-the clamp was not tight enough
-the rubber line is touching (and looks like it started melting) the 2 metal lines passing right there. I'm not sure what they are, but looks like they were going to the transmission.
My questions :
-is the rubber fuel line (from the engine) suppose to have a very sharp over 90 degree angle right before it hooks to the full pump ?
-is it suppose to be that close to the metal lines ?
btw: it's an aftermaket pump; racing type; I don't have the name/number with me right now.
I re-tighted the clamp, but it might be too tight now, where the rubber won't last long. Regardless, I think it's too close (actually touching) the metal lines. Can I put some kind of shield ?
SPONSOR AD:: (Our Sponsors help support C3VR)
Go buy longer rubber fuel line hose, Maybe cost a $1 per foot , maybe some new clamps too. It should have been changed when new pump was installed.Rubber gets old.
maybe who ever changed the pump, just cut off the end of old hose that was attached to old pump, making it to short.
In the mean time ,,,, leave it parked OUTSIDE your garage. dont want your car to catch fire and torch the house too. probably should leave the garage door open for an hour to get rid of vapors before starting it
About touching the tranny lines, Someone probably replaced the lines sometime during the cars life, and routed them to close to the fuel pump. They could be bent/moved away for more clearance.Theres a hand tool for this, dont bend by hand or you could kink the tranny line.
That makes a lot of sense; because the fuel line going to the carb (coming from the the front-left side of the engine) is also a non-correct replacement line.
I guess I just found myself a new project!
(Like I didn't have enough to do already..
)
(Like I didn't have enough to do already..)Thanks for the suggestions. The car is already outside. It's been sitting there since the fuel smell problems started.
You may want to consider installing a steel line part of the way up to the carb. You will need to get a piece of brake line, and bend it to shape. This will limit the leaks, and provide some safety from damage or rubbing that the rubber cannot provide. How far you run the steel is up to you. And that depends on how hard it is to get it in place. But you may want to consider at least taking care of the 180 bend. Then your kinking problem is gone.
Former Member
Send PM
Belgium
Joined: 1/5/2006
Posts: 774
Vette(s): 350/350 T-top
1970
Cortez silver -blue interior
What i had during testing with my engine problems was a loose fuel pump ! the 2 bolts where very loose , leaking oil at the gasket. Idling i remarked it by the heavy vibration of the steel fuel tube coming up to where there's a short flexibel to the carb. Lucky i wasn't driving the car ! Something i have find more on the 'restorated' car : most bolts and nuts are only very light torqued , some chassis ( bumpers ) bolts are even lost ! Had also fuel leaking at the carb connection.
Must check once all bolts !
Must check once all bolts !
in Forum: C3 Fuel, Emission Control, and Exhaust Systems
SPONSOR AD: (Our Sponsors help support C3VR)