C3 Fuel Pump Replacement

[Jack O.]

I'm going to replace my fuel pump to carb line. Do I have to worry about fuel continually leaking from the fuel pump once I remove the line to the carb? What about if the tank line is diconnected from the fuel pump, does it continually leak fuel?
Thanks,
Jack

[Rich Puleo]

Re: C3 Fuel Pump Replacement

Yep, it usually siphons. Put a catch can under the fuel pump, crack the line & see if you get lucky. The gas in the line will drain, after that if it seems like there's too much leaking from the pump, it's siphoning. You need to get a small pair of pinch off pliers to lightly pinch off the rubber hose at the fuel pump or at the tank. (Or you can grab a spare bolt, disconnect the hose at the pump & plug it with the bolt quickly.) If you're using a stainless line, remember to reseat the flare fittings by tightening - loosen - tighten a few times. Hope this helps
Rich

[Don W.]

Re: C3 Fuel Pump Replacement

Yes, expect fuel. Fuel will drain from the line to the carb and anything in the carb. On the other end; the gas tank fuel will generously flow. I speak from experience. Follow the advise on the other post.

Also, there is a rod that drives off the cam shaft that presses a level on the fuel pump. That rod is angled down and slides and interferes with getting the new pump on. You need to be able to hold that rod up while getting the pump mounting bolts started. You can use grease or try and grab the very end with a 3-prong parts grabbers and hold it up while you get the pump mounting bolts started. With the gasket also not wanting to stay in place, it gets a little tricky. Put some gasket cement on the gasket and stick it to the pump and then start both bolts thru the bolt holes and then you can play with getting the rod to stay up while you get the pump bolts started.

[Joe L.]

Re: C3 Fuel Pump Replacement

Jack------

Simply apply a pinch clamp to the rubber line from the fuel line to the pump. Then, disconnect the pump-to-carb fuel line making sure that you have a pan underneath because some fuel drain from the pump is unavoidable. Install the new line from pump-to-carb and remove the pinch clamp. Done.

One thing, though: if the pump has been on the car awhile, now might be a good time to replace both the pump and rubber line from frame line to the pump. The time to replace fuel pumps is BEFORE they fail.

[John H.]

Re: C3 Fuel Pump Replacement

I use a pair of plastic fuel hose pinch pliers with rounded smooth jaws that won't damage the hose: