Findlay234
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| posted on 15/10/07 at 09:49 PM |
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Fuel pump wont stop
Got a 4age 16v bluetop. Had the engine running on saturday fine, just a timing issue present. now it seems that when you turn the ignition the fuel
pump wont turn off after priming the system. Any ideas?
Im using standard efi and ignition system, standard pump as well. checked the relays and they seem to work fine, checked the circuit open relay and it
seems to be fine too. what could be the problem....
fin
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britishtrident
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| posted on 15/10/07 at 09:56 PM |
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Recirculation from the regulator return line ?
[I] “ What use our work, Bennet, if we cannot care for those we love? .”
― From BBC TV/Amazon's Ripper Street.
[/I]
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iscmatt
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| posted on 16/10/07 at 01:26 AM |
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mine bike pump did this, turned out to be a load of swarf got from the tank into the internals of the pump and grinded everything up nice and so
didn't regulate (still pumped). Lesson was learnt and a new filter and new pump were installed.
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Findlay234
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| posted on 16/10/07 at 08:01 AM |
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fuel is recirculation through the return line and im pretty sure it cant be a case of swarf in the motor because there wasnt any in the tank, i made
sure to check this, and the pump has its own particulate filter at the bottom of the fill line. I will go and check the pump today though.
fin
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dan__wright
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| posted on 16/10/07 at 03:55 PM |
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if its just coming back through the return it will just keep pumping, you need a pressure regulator to hold the pressure (on the return pipe)
FREE THE ROADSTER ONE…!!
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Findlay234
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| posted on 16/10/07 at 05:00 PM |
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Yep its got a pressure regulator.
coincidentally ive just come on to mention that the pressure regulator seemed to be making a lot of noise while the pump was working so i replaced it
for another one i have and its still the same noise and wont stop pumping. The pressure regulator is connected to the inlet manifold via vacuum tube
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dan__wright
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| posted on 16/10/07 at 09:14 PM |
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you have got supply correct way round? strange that they both make an odd noise
FREE THE ROADSTER ONE…!!
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Findlay234
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| posted on 16/10/07 at 10:33 PM |
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yep def got the supply the right way round. As it goes now, turn the ignition on and the pump starts up along with the noisy regulator. Touching the
fuel pipes you can feel that the feed line has a good solid flow while the return line has a lot more turbulence in it, possibly created by bubbles???
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Findlay234
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| posted on 17/10/07 at 01:19 PM |
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SORTED!!!!!!!!!!!
think it was a vacuum tube.....
http://www.locostbuilders.co.uk/viewthread.php?tid=76040
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Peteff
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| posted on 17/10/07 at 05:01 PM |
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The pressure regulator is connected to the inlet manifold via vacuum tube
It should be on the fuel rail before the return.
yours, Pete
I went into the RSPCA office the other day. It was so small you could hardly swing a cat in there.
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Findlay234
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| posted on 17/10/07 at 05:45 PM |
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Yeah the regulator and return are the same thing. Engine runs fine now. just a loping idle which probably has something again to do with dodgy vacuum
tubing. well its is 20 year old rubber.
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