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Jonathan
06-01-2026, 07:00 AM
I am finally getting around to replacing the return hose at the fuel accumulator. This one: https://store.classicdmc.com/106997-fuel-accumulator-return-hose-gold.html

It is the short flexible, rubber hose that goes from the relief end of the accumulator up to the tee that takes fuel back to the tank from the engine. Mine is old and deteriorated and when I was under there the other day inspecting things, I could feel the outer surface deform in my fingers with that slimy/greasy feel that rubber has when it's shot.

The car is up on jack stands on all four corners and my plan is to use a pair of clippers to cut the hose in the middle loop that's hanging down and then slide off / wiggle off the two ends. The end on the accumulator has one of those "pinch together to remove" clips while the other end at the tee looks like it is snugged over the hose barb end, but no additional clamp. I have a new hose and hose clamps for both ends.

The car has not been started in a couple of weeks so I wouldn't expect any pressure still in the lines. Tank is about half full at the moment. I'll put my oil catch pan underneath as I cut the hose in two, but other than what fuel is in that hose or the hard line above, am I right in thinking that it shouldn't really "pour" fuel out? No chance of any syphoning happening here?

Other than any fuel that drips out, my only other precaution is to not wrestle or twist that top hose end when I go to remove it so not to move or damage the hard line that that tee is in. Years ago when we did the accumulator, we damaged the hard line going from the accumulator to the filter and had to use a flexible hose in it's place. I don't want any repeats of that so plan on being careful about getting the hose off that barb end. I don't plan on unscrewing the barb end at the tee. I'm going to leave it just like it is and slide the new hose over the barb end, put a clamp on it and that's that.

Any other tips or advice?

Bitsyncmaster
06-01-2026, 07:11 AM
You will get more than a few drips from that line. The return line does fill up from the frequency valve and PPR. Then when the accumulator drops off the rest pressure, the accumulator pulls that fuel into the return side.

82DMC12
06-01-2026, 02:19 PM
Well, you'll find some fuel in there but the good news is there's much and it will eventually stop. Just put an oil change pan under the accumulator area and let'r rip. set up a fan and come back a little later and start working (with safety glasses on of course....)

iflights
06-01-2026, 10:12 PM
I have a very strong "while you are in there" philosophy. If you are going to go through all the work to replace one hose in that area, you might as well do all of them + the accumulator if you don't know how old it is.

Emit
06-02-2026, 04:02 AM
I have a very strong "while you are in there" philosophy. If you are going to go through all the work to replace one hose in that area, you might as well do all of them + the accumulator if you don't know how old it is.

I second this (plus if you have a manual check that pivot bolt)

Also if you do work there, start the car before you take it off the stands, because if you don't - it will leak, and if you do - it won't!

ssdelorean
06-02-2026, 09:56 AM
<<<snip>>>
Also if you do work there, start the car before you take it off the stands, because if you don't - it will leak, and if you do - it won't!

So true!

Jonathan
06-02-2026, 05:17 PM
Thanks for all the tips! Will definitely get that fan going, lol.