Tech141

I was removing the Fuel Pump on my 44-year old car yesterday, and the rubber fuel lines that connect to the fuel pump inlet/return from the hard lines were SOOOOOO soft, they pretty much came apart in my hands.

Make sure you check these periodically, especially if they are the original rubber lines from the factory.

44 years was a good run for them, but waaay past time for replacement, IMO.

Have a GREAT Day, Folks!!!

Sestino

I am replacing both of my fuel lines to my gas tank now. I had a hard time finding 3/8 diameter hose locally but I picked up some Gates brand at Napa. I was looking for 30R9 rating but I only found 30R7. The higher rated hose can withstand more pressure and is less permeable for odor. I'm surprised your original hoses didn't give out a long time ago because of the ethanol in the fuel.

Tech141

Yeah, the condition of the hoses was a surprise as they were the worst I've ever seen.

I have a good amount of Vapor Guard Fuel Injection hose that I will use to replace the bad ones.

interpon

make sure you use the 'S' hose so you do not have any kinks

theandies

That's what was going to say. The "S" hose is available, at least it was when I replaced my engine years ago.

I have a quick question while we are talking fuel pump hoses. I'm switching to Sniper 2 and have a fuel pump block off plate for my engine. I just don't look forward to removing the pump and push rod. What would happen if I just left it and it ran with no fuel and the ends capped? I would love to just leave it in place just in case the zombie apocalypses happens and I can switch back to carb and points (which I still have in my "box-O-stuff).

HeadsU.P.

"On Paper" as they say, it looks like an ok plan.

But we all know, probably it's not in your best interest to let the pump just go along for the ride.

Its only four bolts, I would remove pump & plate, install block-off plate.
I never removed the tire. I just used a 3/8 drive ratchet with a 12" extension.

theandies

Ya, you're probably right and my spidy sense tells me the same thing. I've got the block-off plate so I'm ready.

Sestino

My "S Hose" was just generic 30R7 3/8th Hose. It looks like it has a date code from Sept. 20 1996 so it has permanently shaped itself into an S. Glad I changed it.

Getting the hose clamps off of the steel line on top of the frame rale is challenging. I also changed the 1/4 vent hose. I'm glad I read about the small restrictor inside the hose that vents the bladder - I would have totally missed that. I cut it out of the old hose and put into the new hose.


My "S" Hose

theandies

I don't remember the "S" being that long. My hard line to my pump runs all the way up the frame rail right near the fuel pump and my "S" hose is only a few inches long. Was your hard line been cut or something?

Sestino

This is where my hard line ends and
My hard line ends in the correct spot on the frame rail. Both hoses are 24 inches long. The vent line is about the same. A couple more inches in length for the vent line would make the installation easier.

4-vettes

Everyone else is talking about the S hoses at the front of the hard line to the pump. You are on the wrong end of the car.

theandies

That's what I was going to say after seeing his pictures. The supply hardline to the pump inlet on the right front of the frame rail is the "S" hose.

Sestino

My bad. I did not read the first post carefully and I just happened to be replacing the rear hoses this week, and because I run an MSD Atomic EFI, I don’t have a front S hose so it is not something I think about.

While the hoses at the gas tank are probably less of a fire risk, that risk is not zero, and I expect there more than a few C3 owners that have not dropped the tank and changed out these rear hoses.