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Does the fuel hose clamp go on stem or barb of FPD?

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Old 01-31-24, 01:47 AM
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Does the fuel hose clamp go on stem or barb of FPD?



attached is a photo of the FPD and where I currently have my fuel injection hose clamped (on the stem where the arrow points). Is that ok or does it need to be at the barb? Is it ok to have two clamps (one at barb and stem)?
Old 01-31-24, 01:54 AM
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Page F99 of the USDM FSM shows a single spring clamp. Not sure what you mean by "Barb".
Old 01-31-24, 02:03 AM
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Something weird about this set up as demonstrated in the USDM FSM, bu tyou get the idea about the clamps.



The above is the set up for testing. Below is the set-up diagram.



Last edited by Redbul; 01-31-24 at 02:08 AM.
Old 01-31-24, 03:06 AM
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Originally Posted by Redbul
Page F99 of the USDM FSM shows a single spring clamp. Not sure what you mean by "Barb".

i meant the barb on the fuel pulsation dampener. I circled it in blue in the attached image. Should the fuel injection clamp go on the barb or the stem where the arrow is pointing?

Old 01-31-24, 03:08 AM
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Originally Posted by Redbul
Something weird about this set up as demonstrated in the USDM FSM, bu tyou get the idea about the clamps.



The above is the set up for testing. Below is the set-up diagram.


pictures here really don’t tell me if the clamp should be on the barb or stem of the FPD, that’s why I’m confused 😅
Old 01-31-24, 08:51 AM
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Originally Posted by Redbul
Page F99 of the USDM FSM shows a single spring clamp. Not sure what you mean by "Barb".
the fuel recall added a second clamp, which basically solves the OP's problem. hose goes on, and then both clamps and there isn't any room for anything else
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Old 01-31-24, 09:38 AM
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Originally Posted by Xion

attached is a photo of the FPD and where I currently have my fuel injection hose clamped (on the stem where the arrow points). Is that ok or does it need to be at the barb? Is it ok to have two clamps (one at barb and stem)?
I always place clamps on the flat area. The barb is to prevent the hose from sliding off the tube. You do have to assure the clamp is tight enough to seal.
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Old 01-31-24, 11:26 AM
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I just did this not too long ago and mine had the fuel recall done to it so there were two clamps on that hose. One right after the barb and a secondary clamp right behind the first clamp so two clamps on that hose. Below is a picture of the hose coming from the FPD to the fuel hard line, but you can see the two clamps on the fuel hard line.


Last edited by obeeone420; 01-31-24 at 11:29 AM. Reason: clarifying fuel lines
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Old 01-31-24, 01:45 PM
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I am gonna check if all my clamp spots are double clamped!

And with the correct sized clamps.

I think there are even more robust fuel line clamps available.

I note that contrary to the diagram, my Version 5 car had much more substantial fasteners on the line between the two rails.


Last edited by Redbul; 01-31-24 at 01:51 PM.
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Old 01-31-24, 03:49 PM
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Originally Posted by DaveW
I always place clamps on the flat area. The barb is to prevent the hose from sliding off the tube. You do have to assure the clamp is tight enough to seal.

thank you. I did it right then, I’ll throw a second clamp on and be done with it then
Old 02-01-24, 11:40 AM
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For what it's worth you never put a hose clamp on the barb, always on the body of the pipe.

Putting it on the barb defeats the purpose of the barb. You are clamping before the bump, if there's any pressure trying to pull the hose off it can't come off since the clamp pressure can't get past the hump. If you put it on the barb you may as well not have the barb, it will decrease the strength of that connection significantly.

Also OEM hose clamps properly installed will never give you a problem. Avoid aftermarket fuel line clamps if possible, especially cheap worm drive clamps that tear up the hose.

Dale
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Old 02-01-24, 05:56 PM
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Some many cases of fuel line hose clamp failures............



Show car on Sunday.........

National news hour, Monday.
Old 02-03-24, 01:39 AM
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The barb is the seal & the clamp holds the hose in place on the steel pipe. The clamp should be after the barb, not on top.

Worm drive clamps belong in the trash. If you must replace the OEM spring tension clamps, use bolt & nut style clamps.
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