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Quick question regarding glow plugs

Discussion in 'Series Land Rovers' started by disconewbie, Jul 20, 2014.

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  1. disconewbie

    disconewbie Member

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    Hi guys and girls :) I've just taken the plunge and bought a 71 series 3 diesel 2.25 3 bearing and started to cross a few little jobs of list :)

    I spent most of yesterday investigating why my glow plugs weren't working , and found that two of the old style "pig tail " glow we're damaged and as they were wired in series , I believed that to be the problem ....... But no luck :confused:

    So I thought I'd treat the old girl to an upgrade and fitted the Brit part new style plugs wired in parallel , but still no joy :confused: after a few hours of digging around and double checking the wiring diagram here's my question :)

    I have doubled checked all connections and clean earth points and straps , checked continuity of all wires from plugs to back of ignition switch and starter solenoid and found no open circuits or broken wires , so ........ If I still have no power getting to the big brown and red wire coming off the back of my ignition switch which feeds the glow plugs , is my starter solenoid broken or my ignition switch fubar

    The Landy starts with no plugs , just wanted to fix it before winter :)

    Any advice greatly appreciated :D:D
     
  2. Dr_evil

    Dr_evil Banned

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    there may be a clue in the birtpart but check with a multimeter first
     
  3. disconewbie

    disconewbie Member

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    That was my first thought :) had some shocking parts from Brit part in past , but I've gone all over the wring with a multimeter and can't find any breaks , just no power getting to the wire from ignition switch :-(
     
  4. Dr_evil

    Dr_evil Banned

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    check the switch for continuity
     
  5. disconewbie

    disconewbie Member

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    Top man :) , completely forgot to do that :-(
     
  6. disconewbie

    disconewbie Member

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    No joy , switch works as it should :-( slightly high resistance , cured by cleaning contacts. 12v live at "in" feed just no power at all to supply for glow plugs :-( I'm at a loss now :-( any advice greatly appreciated
     
  7. Dr_evil

    Dr_evil Banned

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    so theres power in, power out but nothing into the plugs ?
     
  8. disconewbie

    disconewbie Member

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    There's power in 12.8v and switch makes all contacts ( 1, 2, and starts the engine )

    But no power to big brown and red wire which feeds ( switched live to glow plug resistor)

    I can only assume that the power in , is feed from starter solenoid ?
     
  9. Dr_evil

    Dr_evil Banned

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    possibly........without looking at the wiring diagram or my diesel engine I have no idea
     
  10. disconewbie

    disconewbie Member

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    Thank you Dr Evil for all your help :) went back and re-checked those high resistance readings , ignition barrel is on its way out :-( I'll order a new one from paddocks in the morning
     
  11. ben waine

    ben waine Active Member

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    If it's the new type, wired in parallell then you don't need to use the ballast resistor (that's how mine is and there's no problems!
    I guess you know, but a good 15-20 of heat is usually used to start it!, when the engine cranks is it slow? I.e. Is your battery big enough (I know it's a 12v one but can it produce enough amps?)
    This is a link to a very good website that's helped me a few times!
    Glow Plug Conversion
     
  12. trax

    trax . Events Planner

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    useful mod imo is using a push button switch for the glows.. like a starter button

    easier to hold for whatever length in the winter.

    you just need a little bit of power connected to a relay which can get a thick cable from the starter motor

    also having all that juice through the ign probably helped cook the ign in the first place :)
     
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