Fuel Leak at fuel line front of carb

69-Pace · Mar 10, 2015

Domano 68 said:
The engine is out of a 69 Impala. Going the new line route, I assume it would be one piece ( one line) going from the pump to the carb?

Depends on how many lines are on your fuel rails from the tank to the pump. 2 the vehicle was an original 350 hi performance Rochester Quadrajet car. One rail it was a regular performance small block. Either is fine. Two requires the return line on the sender in the tank and the return line from the "tin can" style A/C fuel filter.

Some folks with return lines just cap them off at the front and the sender.

faslane · Mar 10, 2015

The 1 inch nut may or may not break loose, (i would change filter having most of it apart anyway) That nut is soooooooooo prone to strip out, be careful, that would be a whole nother can of worms and topic. Dont mean to sound like know it all but happened to me and many others.

Gbauer · Mar 10, 2015

69-Pace said:
x2 you can bend lines yourself but its a technique and requires skill. Buying the correct line is cheap and easier.

By the time he buys the flare tool, bender and line he'll be money ahead (and headache) to buy the line pre-bent.

Gbauer · Mar 10, 2015

TJS69 said:
OK, the reason it is leaking is because the line has too much pressure on it, and they just tightened up the connection at the carburetor and hoped it would seal. The easiest fix would be to hold the line straight and "pull" on it as you retighten the connection so it goes in straight.

Another way would be option #1 in the photo. Cut the line at the two red lines, slide some rubber fuel line over the ends of the tube and tighten with hose clamps. The hose represented in crooked white line. Note: You will still need to "redo" the connection at the carburetor so it is straight.

Option #2 - Don't have a tubing cutter ? Remove the connection at carburetor and install hose fitting. (use teflon tape) Use hose clamp to insure that rubber fuel line is secure. Remove compression union (splice) at top of valve cover including the compression ring from the line and push rubber hose over the fuel line (if you can get the hose over the compression ring on the line, you can leave it on the tubing) and clamp it with a hose clamp.

You will want to push the tubing over towards the water pump so the line isn't on the valve cover. (light green arrow in picture)

Use a good quality 1/4" fuel line (I would use NAPA etc.) NOT just rubber hose !

That's what I ended up doing with mine except I ran the hose all the way from the pump to the carb. Mine is far from stock (but not a V8).

Fuel line doesn't touch anything between the pump and carb now. No leaks.

Domano 68 · Mar 11, 2015

Got the line and 1" nut off with no problems (that I know of).

You can see the filter here in the picture. Does the offwhite plastic gasket come with the new filter? I would assume this is where it is leaking. It looks like Cliffs just sells the filter and spring, no mention of this gasket.
http://cliffshighperformance.com/parts.html#a

I bent the line a bit but still needs some more work.

BPOS · Mar 11, 2015

If the gasket doesn't come with the filter, ask the parts guy for one. Take the old with you so he can match it up.

The factory used steel fuel line between the pump and the carb for a reason. I'd buy the new pre-bent line - it's only $20

COPO · Mar 12, 2015

Use nothing but a flare nut wrench to tighten it when you get it straight.

69-Pace · Mar 12, 2015

Domano 68 said:
Does the off white plastic gasket come with the new filter? I would assume this is where it is leaking. It looks like Cliffs just sells the filter and spring, no mention of this gasket.

Try here for Quadrajet parts not sold by Cliff or only sold in the rebuild kits he offers.

http://quadrajetparts.com/rochester...adrajet-inlet-fittings-inlet-fitting-gaskets-extra-thick-nylon-pack-p-2221.html

Fuel Leak at fuel line front of carb

69-Pace

faslane

Gbauer

Gbauer

Domano 68

BPOS

COPO

69-Pace

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