Mk2 Not Starting - Problem Solved! YAY...

Discussion in '8-valve' started by Richard Mk2, Apr 5, 2010.

  1. Richard Mk2

    Richard Mk2 Paid Member Paid Member

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    Yea thats true...

    Will jump it tomorrow, and see what happens? Ive already contacted someone seeing if they have a used one in, so hopefully should have a replacement lined up...

    Cheers for the help Jonny :thumbup:

    Will update how it goes!!
     
  2. muppet9966 Forum Member

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    Wow Rich, your car is coming along nicely.
    Would be nice to see it when it is all done.
     
  3. Richard Mk2

    Richard Mk2 Paid Member Paid Member

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    Thanks mate :thumbup:

    I haven't seen you about in a while mate.

    If your ever about near this way let me know and i'll show you how its coming along :thumbup:
     
  4. Richard Mk2

    Richard Mk2 Paid Member Paid Member

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    Just a quick update.

    I went to jump the main pump today to see it was actually gone, but had a quick look at the plug which connects to it.

    The metal connectors inside the plug had been pulled back, so they wasn't making contact with the pump.

    I pulled the rubber off and connected them up, and now the pump is working.

    BUT its still not starting????

    I checked the new plugs and they are now wet with fuel.


    I also checked the king lead, which was giving out a spark, but when i checked the other 4 they wasn't sparking?

    So i changed the leads back to the old black ones and now there is a slight spark, not as big a spark as the king lead though...

    Now im thinking it could be the distributor?

    Any ideas guys...
     
    Last edited: Apr 10, 2010
  5. rubjonny

    rubjonny Administrator Staff Member Admin

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    replace the cap & arm next dude, if the spark is getting to the king lead then the only thing stoppng it getting from there to the plugs is the cap, arm and leads
     
  6. Richard Mk2

    Richard Mk2 Paid Member Paid Member

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    The cap is quite new. Took it from my Driver but as they are cheap to replace, i might aswell replace all three.

    Cheers :thumbup:
     
  7. Mike_H Forum Addict

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    Have you got a timing light with an induction loop? You can use them to check for a spark at each lead, or just do it the old fashioned way with the spark plug out, stuck in the lead, and left on the inlet manifold.

    The problem you had with the terminals pulling out of the fuel pump plug can also happen at the dizzy hall sender plug - so have a check that the terminals are actually in the plug (if they all stick through the same distance, it's probably fine.)
     
  8. Richard Mk2

    Richard Mk2 Paid Member Paid Member

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    Good point Mike. Will check the hall sender plug tomorrow :thumbup:

    I did try the spark plug in the lead resting on the inlet but the spark was very very weak, compared to when i tested the king lead?
     
  9. Richard Mk2

    Richard Mk2 Paid Member Paid Member

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    I checked all the wiring going to the dizzy hall sender and all is ok there.

    Checked the king lead again and its giving off a strong spark.

    But the spark plug leads are giving off a really weak spark, which makes me think the rotor arm and dizzy cap will need changing.

    If i change them and all is still the same, could it be the actual distributor itself???
     
  10. shaz8389

    shaz8389 Forum Junkie

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    Rich shall I bring a known good dizzy round to test if it is? Least that'll eliminate that one for you.
     
  11. Richard Mk2

    Richard Mk2 Paid Member Paid Member

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    Cheers mate.

    But is the spare distributor from the Driver engine, because they are different compared to the GTI one :thumbup:
     
  12. Richard Mk2

    Richard Mk2 Paid Member Paid Member

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    Hi Rubjony.

    Been looking closley at the wiring going to the coil, and there is no green and red wires.
    Just two red/black into 1/- side with two spades, and 2 x black wires going to the 15/+ side with 3 spades...

    The king lead is definately sparking a very strong spark, but the spark plug leads have a very weak spark.

    Will put a new rotor arm and dizzy cap on soon. :thumbup:
     
  13. shaz8389

    shaz8389 Forum Junkie

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    Bought it for a my digi2 GTi because I thought it was buggered then jonny looked at the engine and it's been fine since. We should get him to come and breath life into yours or something.

    Maybe you bought a dodgy one... ;)
     
  14. Richard Mk2

    Richard Mk2 Paid Member Paid Member

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    Yea that would be a good idea. RubJonny, you do know your stuff :thumbup:

    If thats all good then yeah i'll try the spare distributor, just to see if it makes a difference.
    We'll have to sort something out soon then mate.
     
    Last edited: Apr 11, 2010
  15. rubjonny

    rubjonny Administrator Staff Member Admin

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    with the coil some just have red/green, that is fine. if the wiring to coil was wrong it wouldnt spark at all!
    probably not the coil either, though if the hall sensor has started to die the spark could be erratic
     
  16. Richard Mk2

    Richard Mk2 Paid Member Paid Member

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    Im off work today so will be buying a new arm for it to see if it makes any difference.

    Will update later on. Cheers :thumbup:
     
  17. Richard Mk2

    Richard Mk2 Paid Member Paid Member

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    I just put the new arm on, and guess what, its still not starting... [:x]

    Lets narrow this down then -

    * Lift and main pump are working fine
    * Plugs are wet with fuel so injectors are working
    * Coil is working ok, as there is a strong spark coming from the king lead
    * Ive fitted new Bosch plugs, Beru rotor arm and a 2 month old Dizzy cap from my
    Driver engine.
    * Checked hall sender wiring and all is fine


    So im guessing now that its either the Hall sensor thats gone, or the distributor itself...


    When i was cranking the engine, i did notice that the Dizzy cap seems to move as the arm turns around. Is that normal? Im wondering if the shaft on the distributor may have been bent accidently when it was taken out of the previous car, or when i put it in?
    Cant recall doing that though tbh...
     
  18. rubjonny

    rubjonny Administrator Staff Member Admin

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    no the cap shouldnt move, what does it look liek inside? also crank it over with cap off, if the rotor arm flops all over the place then the pin is bent and you need a new dizzy
     
  19. Richard Mk2

    Richard Mk2 Paid Member Paid Member

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    It looks like its hitting the inside of the dizzy cap, so i think it may well be bent...

    I did try to look at the rotor arm while cranking it, but couldn't get a good view, plus i was on my own...

    But the dizzy cap is definately moving side to side while cranking.
     
  20. rubjonny

    rubjonny Administrator Staff Member Admin

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    yeah think we have a winner!
     

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