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Author Topic: HELP - fuel pump piston snapped  (Read 3792 times)

Offline Rigsby

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HELP - fuel pump piston snapped
« on: July 15, 2017, 10:17:38 am »
I was just replacing the cam follower, and on pulling the pump out it got caught in the banjo pipe and twisted.

Basically the end of the piston has snapped off from the end of the spring.
Dont know if it was like it before as ive only had the car a week

what do i do? safe to put back together?

Appreciate the help
« Last Edit: July 15, 2017, 04:18:26 pm by Rigsby »
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Offline bacillus

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Re: HELP!!!
« Reply #1 on: July 15, 2017, 11:55:04 am »
Any chance of a few pics so we are clear on the problem?
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Offline Rigsby

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Re: HELP!!!
« Reply #2 on: July 15, 2017, 12:40:47 pm »
Quote from: bacillus on July 15, 2017, 11:55:04 am
Any chance of a few pics so we are clear on the problem?
yeah ill get some posted.
Basically the piston is no longer connected to the spring ( right on the end)
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Offline Rigsby

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Re: HELP!!!
« Reply #3 on: July 15, 2017, 12:48:47 pm »

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Offline GrayMK5GTI

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Re: HELP - cam follower / banjo bolt issue
« Reply #4 on: July 15, 2017, 02:27:06 pm »
Please title your threads better - far to many 'help" posts on here
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Offline rich83

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Re: HELP!!!
« Reply #5 on: July 15, 2017, 04:05:06 pm »
Quote from: Rigsby on July 15, 2017, 12:48:47 pm



That is scrap now I am afraid. You either need a new piston or a whole new punp
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Offline Rigsby

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Re: HELP - fuel pump piston snapped
« Reply #6 on: July 15, 2017, 04:21:52 pm »
Can you buy the piston/ spring from anywhere?

Isn't this the part that you upgrade for better fuel flow? So there must be loads lying around in peoples garage's
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Offline v4rley

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Re: HELP - fuel pump piston snapped
« Reply #7 on: July 15, 2017, 04:34:53 pm »
Yes that the part people upgrade so will be hundereds rolling around in people garages  :happy2:
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Offline rich83

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Re: HELP - fuel pump piston snapped
« Reply #8 on: July 15, 2017, 04:36:20 pm »
Don't fit a second hand piston into a pump. Buy a whole second hand pump
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Offline Rigsby

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Re: HELP - fuel pump piston snapped
« Reply #9 on: July 15, 2017, 04:40:08 pm »
Quote from: rich83 on July 15, 2017, 04:36:20 pm
Don't fit a second hand piston into a pump. Buy a whole second hand pump
Why's that?
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Offline Juliand

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Re: HELP - fuel pump piston snapped
« Reply #10 on: July 15, 2017, 06:21:50 pm »
Quote from: Rigsby on July 15, 2017, 04:40:08 pm
Quote from: rich83 on July 15, 2017, 04:36:20 pm
Don't fit a second hand piston into a pump. Buy a whole second hand pump
Why's that?
Probably because another piston will have different wear to the part that it fits into on yours? - and therefore won't work properly.

Sounds like pretty good advice to me - a lot of very knowledgeable people on here
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Offline r5gtt

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Re: HELP - fuel pump piston snapped
« Reply #11 on: July 16, 2017, 01:03:45 am »
It's the one with the top hat on it but doesn't come with the top hat

« Last Edit: July 16, 2017, 01:06:38 am by r5gtt »
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Offline Dan_FR

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Re: HELP - fuel pump piston snapped
« Reply #12 on: July 16, 2017, 06:47:36 am »
Buy a good used pump as already said.... Fitting a second hand piston is as bad as people buying a second hand rod/piston on eBay and just throwing it in to an engine. You're looking at £50-60 for a decent pump
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Offline Rigsby

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Re: HELP - fuel pump piston snapped
« Reply #13 on: July 16, 2017, 08:21:47 am »
Yeah I think I have a good used pump sorted
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Offline Rigsby

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Re: HELP - fuel pump piston snapped
« Reply #14 on: July 18, 2017, 08:59:04 pm »
I bought a good second hand pump.
It was the newer version without banjo fixing and the pressure release valve.
The top sensor was cracked and been repaired, was told it still works but looks nasty.
No problem I'll just swap the top sensor over from my old pump along with the banjo fitting, but I can't get the top sensor to sit at 11 o'clock like it should...ends up at 1 o'clock every time, anyone know why?
Dies the sensor need to sit at that angle?
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