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Thread: Starting issue brewing

  1. #1
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    Starting issue brewing

    Hi All,
    Over the past week I have had a few problems starting the car straight up.
    Have plenty of charge and she will turn over without any issue but wont fire up as usual.
    First thing I did was check the fuel line and plenty of fuel at the rail. Next undid a spark plug and put it on the engine to see if I had spark. Turn it over and she fires up. Put plug back in and off we go. I have done this three times recently and exactly the same scenario. I don't fiddle with anything else except the lead and plug.
    So is she just after some attention? or is something brewing ?

  2. #2
    p38arover's Avatar
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    What happens if you turn on the ignition but not attempt a start for, say, 30 secs, then hit start?
    Ron B.
    VK2OTC

    2003 L322 Range Rover Vogue 4.4 V8 Auto
    2007 Yamaha XJR1300
    Previous: 1983, 1986 RRC; 1995, 1996 P38A; 1995 Disco1; 1984 V8 County 110; Series IIA



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  3. #3
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    I will let you know Ron when it happens again and before I follow the usual fix procedure. I guess you are thinking fuel pump?
    I thought fuel pump the first time but after hitting tank while cranking and checking the fuel line I am not so sure now. Particularly given the weird coincidences described previously. It is still my biggest suspect.
    I will also check if it starts after I release some fuel out of the rail and before I take out a plug.

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    Could it be a coil pack on the way out?

    Steve

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    Ok Ron,
    The 30 second delay rule is working when ever she doesnt pop first go. So what exactly is this telling me? Is the system being flooded first and then the wait is allowing it to dry up enough to start? or the fuel pump is dying and not building enough pressure initially? What were you indicating is the problem?

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    To be honest, I don't know. I think lack of pressure. I also asked because I occasionally have the same situation and leaving it for a short time seems to allow a start. I should put a pressure gauge on the fuel rail to check.
    Ron B.
    VK2OTC

    2003 L322 Range Rover Vogue 4.4 V8 Auto
    2007 Yamaha XJR1300
    Previous: 1983, 1986 RRC; 1995, 1996 P38A; 1995 Disco1; 1984 V8 County 110; Series IIA



    RIP Bucko - Riding on Forever

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    Quote Originally Posted by PeterAllen View Post
    Ok Ron,
    The 30 second delay rule is working when ever she doesnt pop first go. So what exactly is this telling me? Is the system being flooded first and then the wait is allowing it to dry up enough to start? or the fuel pump is dying and not building enough pressure initially? What were you indicating is the problem?
    My experience of this on a VP V8 commodore was exactly the latter... the fuel rail was unable to retain the pressure and so the fuel was draining back into the tank. So, turn on ignition for 10-15 seconds, allow pressure to build then fire it up...

    IIRC the GEMS has a fuel pressure regulator as a separate item... does this also act as a one-way valve to keep the fuel rail pressurised... just speculating.. if so, could it (regulator) be cause of problem?
    MY99 RR P38 HSE 4.6 (Thor) gone (to Tasmania)
    2020 Subaru Impreza S ('SWMBO's Express' )
    2023 Ineos Grenadier Trialmaster (diesel)

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    Thumbs up

    Thanks Ron and Hoges, you may be onto something regarding the regulator. I will have a look down that suggestion.
    funny thing about range rover addicts, had a guy at the door yesterday that turned up out of nowhere and wanted to chat about my p38. He had written off his classic and a caravan in a rollover and both he and his wife escaped unharmed. I am sure that he will be bitten when he jumps into a 38. He was sure that had he been in a lesser vehicle that his story would be a lot different. Another new member to join the crew shortly.

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    Quote Originally Posted by Hoges View Post
    My experience of this on a VP V8 commodore was exactly the latter... the fuel rail was unable to retain the pressure and so the fuel was draining back into the tank. So, turn on ignition for 10-15 seconds, allow pressure to build then fire it up...

    IIRC the GEMS has a fuel pressure regulator as a separate item... does this also act as a one-way valve to keep the fuel rail pressurised... just speculating.. if so, could it (regulator) be cause of problem?
    I found that my pressure was low when the crap was clogging my filter, but not low enough to cause idling problems. As soon as it needed power though the pump could not deliver.

    There is a separate regulator and once you have a fuel pressure gauge (they are not expensive on ebay) you can give the return pipe a little squeeze and see if the pressure goes up, if it does your regulator is fine

    Sounds like it may be a dying pump.

    And after i cleaned mine up it held lots of pressure after i turned the engine off whereas before it didn't

    Steve

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