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Mustang Technical Discussion > Pre 1973 > 65 Mustang, fuel hose leak at clamp; where it meets pump. > Community Forums > Mustang Forum Australia - Mustang Tech

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65 Mustang, fuel hose leak at clamp; where it meets pump. Reply to topic

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StephenSLR
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mert wrote
simple spring clamp (I've never had one leak there) to me it points to faulty hose...


Where do you buy them? The Repco I rang don't have them.

I'm thinking these may be a better option as a spring always keeps tension; no need to keep adjusting them tighter.

s


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hybrid
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There's 6 billion of them on ebay.


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StephenSLR
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hybrid wrote
There's 6 billion of them on ebay.


lol, yeah I've been just browsing but prefer to rock up to a store, I can always exchange if they're the wrong size.

What I've also read on one site:

Spring clips are designed to distribute pressure uniformly around the application zone.

Their use is recommended when the hose is subject to rapid changes in temperature which cause expansion and contraction of the material used in the assembly.

The Spring clip maintains pressure during this process, thereby preventing leaks.


www.ebay.com.au/itm/5-...3cb2076ed3

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hybrid
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The engine changes temperature pretty slowly really. But might as well try them if you can't find anything else wrong.


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boofhead
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I personally find it hard to accept that the temp change is the problem in relation to the rubber tube being able to seal against the fuel line. It just does not add up in my mind. I agree try the traditional spring clamp if it works then great but I am expecting it not to.


I will someday think of something clever to say.

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StephenSLR
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boofhead wrote
I personally find it hard to accept that the temp change is the problem.


It's got me beat too, I'm almost on the verge of replacing the pump but will try less drastic means first.

s


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Last edited by StephenSLR on Sat Feb 14, 2015 1:10 am; edited 2 times in total

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ponyride
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Agreed Boof. Correct size hose, decent clamp properly situated, never a problem in dozens of cars for me and the same has held for millions of cars for 50+ years.


Rick.

Old things amuse all minds.

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StephenSLR
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I've cleaned up the area and next time will check higher up to see if the leak is running from above. It's just odd that it stops leaking the moment I tighten up the clamps.

It's as if the clamping pressure is the problem.

s


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scott66stang
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65muzzy wrote
It could be the pump leaking and dripping onto the lines?

Im going with this theory. If its just the 2 lines at the pump i suggest looking at the diaphram leak indicator hole on the casing (if it has one) and see if leaking on to those bottom lines.


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scott66stang
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Haha check this out





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StephenSLR
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I reckon he should've just tightened the hoses, lol.

Wow, that's pretty bad, mine's not leaking anywhere near that much.

s


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StephenSLR
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Yesterday I rolled the car out of the garage, started it up, checked underneath; leaking.

This time I thought I'll do a process of elimination; I switched off the engine and instead of tightening up the clamps I sat there for a minute and then started it up; no leaking.

It seems the leaking only occurs on a cold start up until I switch the engine off. Luckily I reverse out of the garage and spot the leak.

It was wet around the outlet hose; I ran my finger up the cylinders and it was dry however this time I felt the top of the pump and it was wet there. Looks like I'm up for a new pump.

I tightened the clamps as a check; the outlet could be tightened a bit, the inlet not as much.

The engine's a 302W from a 1969 Matador; where in Sydney can I get a fuel pump for it? I'm not after a concours replacement.

s


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hybrid
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You could try repco (might be lucky)... or one of the Mustang shops.


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scott66stang
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Should be a std XR-XY windsor fuel pump, Repco or Coventry's should have one

www.ebay.com.au/itm/li...amp;chn=ps


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StephenSLR
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scott66stang wrote
Should be a std XR-XY windsor fuel pump


Cheers, I found one on ebay; should be here in a couple of days.

www.ebay.com.au/itm/Fo...1457400083

s


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