buffed1978

On my 350 the fuel line between the carb and the fuel pump is leaking .The leak is the pressed on fitting where it goes on to the fuel pump.It is a rubber fuel line .The fitting is cracked.When i take the fitting off the fuel pump how much fuel will come out and is their a way to do it without loosing a lot of fuel.

ED79

IMO you could crimp the rubber supply line feeding the fuel pump (with a catch pan underneath), and have everything in place to do a quick hook up and or R&R. Make sure the battery is unhooked and plenty of ventilation. You really should have a metal line to the carb. Good luck Ed

lars

There is no "pressed on fitting" anywhere in the line between the pump and the carb. If you have any pressed fittings or rubber lines they are not correct and should be replaced. Buy or fabricate a correct all-steel line with screw-on fittings.

When you replace the line, pinch the rubber pump inlet line with a pair of vice grips to minimize fuel spillage when removing the outlet line. Place a pan under the pump, since you will spill the fuel in the line from the pump to the carb.

Lars

PRNDL

Does it help to jack the front of the car up, or put it on ramps to keep the fuel pump above the level of gas in the tank? Might not make any difference but it makes me feel better. I want it up in the air anyway for access.

FlyViper

Definitely go with steel braided or metal line with AN fittings. I also used the vice grip technique to cut off flow on the old rubber hose. Get it all hooked up from the carb and the last thing you have to do is take the rubber hose off the fuel pump and quickly screw in the new fitting. Have a pan ready as you're going to lose fuel, but it's not going to be a ton and you can wipe up the spilled gas off the block, A arms, etc. when you're done.

aussiejohn

Buffed,
Listen to Lars and blueface. I'm not keen on pinching old rubber fuel lines, as this may cause failure of the rubber line on the inside where you can't see it. Lifting the front of the car will enable the petrol to drain back to the tank and, unless you have a full-to-the-brim tank, you should not lose any more than a few ounces of petrol when you remove the inlet fuel line going to the pump.

Regards from Down Under

aussiejohn

JimT

When I replaced the "S" hose on my '72, I drove the car up on racks, siphoned gas out of the tank then went to work. No line pinching, spilled gas, or mess. It takes a little longer, but much safer.
I also installed a braided fuel line from the carb to the pump. It's been four years and all is well.
Good luck.

FlyViper

Definitely agree, but I'm just saying that works fine if you're replacing the line anyways.

phclub

I am planning this project this weekend, replacing rubber hose from pump to carb with metal. Pinch old inlet lines, then replace with new inlet lines. And just to ensure no pressure build ups; paper filter will be replaced.

Question; does using teflon tape on the connector nuts help seal the system?

TimAT

Teflon Tape is a bad idea. It is not resistant to gas. Unless you're very careful wrapping it, bits of the tape can get into the sytem and cause all kinds of grief.

aussiejohn

phclub,

If you're going to do this, have you thought about using AN fittings? I followed Lars' article for my Holden V8 and just bought the right fittings to adapt the fuel pump and carburettor (Q-jet) to AN dash 6 (3/8") males and bent up a steel line with female AN dash 6 ends. Looks good and there is no need to use Teflon tape anywhere.

Plus, if you ever need to change the carb or fuel pump, the AN fittings are very easy to undo and redo. FYI, I used a standard 45 degree flaring tool after I'd slid on the AN fitting and ferrule, just tightened them up. The ferrule, when the coupling is tightened, makes the flare "conform" to the AN 37 degree angle. No leaks.


Hope this helps.

Regards from Down Under

aussiejohn

75+78 Corvettes

Get a golf tee to plug the hole. Did that several times successfully

Vette79C3

I'm surprised someone didn't suggest this earlier. You can use all sorts of things to just plug the hole of the rubber hose. Maybe use some tape to ensure it stays in place. Purchase a new steel or SS fuel line from pump to carb. No teflon tape needed.

phclub

This is the new line that I will be installing with new fuel nut at carb, new paper filter, and new fitting on pump. additionaly new frame to pump rubber lines. Hope all goes well with no leaks.
http://www.ecklers.com/corvette-fuel...1970-1976.html

fugawi

don't buy from ecklers! they are bad on customer service. buy from another forum vendor like corvette central.

phclub

Fugawi, I only go to Ecklers if I cannot find it elsewhere, I usually shop Corvette Central.