760T won't start

Discussion in 'Volvo 760' started by Paul Hosking, Sep 8, 2006.

  1. Paul Hosking

    Paul Hosking Guest

    the wife ran it down to empty on fuel, put a tin of fuel in and won't start
    any ideas.

    BTW thanks for help with the last problem fuel injection relay worked a
    charm!!



    Paul
     
    Paul Hosking, Sep 8, 2006
    #1
  2. Paul Hosking

    Paul Hosking Guest

    Just to add to this,

    it cranks, there is a spark (or at least it sure felt like it) the car is on
    a slight angle, it sounds a bit strange when it cranks sort of loose or
    free.

    When I first went to start it, it ran for a little bit I thought I might
    make it to the petrol station, well it got out the drive.

    Paul
     
    Paul Hosking, Sep 8, 2006
    #2
  3. Paul Hosking

    Mike F Guest

    Undo the screw on the top of the timing belt cover, bend it back and
    have a look at the belt.

    --
    Mike F.
    Thornhill (near Toronto), Ont.

    Replace tt with t (twice!) and remove parentheses to email me directly.
    (But I check the newsgroup more often than this email address.)
     
    Mike F, Sep 8, 2006
    #3
  4. Paul Hosking

    zencraps Guest

    The easiest way to determine whether the timing belt has failed is to
    remove the oil cap on top of the valve cover and look while someone
    tries to start the car.

    If you can see the cam turning over, the belt is not broke (although it
    may have slipped or jumped a few teeth).
     
    zencraps, Sep 8, 2006
    #4
  5. Paul Hosking

    James Sweet Guest

    How much fuel did you add? It's possible the pre-pump has failed,
    without it the system will have trouble priming if it's been run dry.
     
    James Sweet, Sep 8, 2006
    #5
  6. Paul Hosking

    Paul Hosking Guest

    Yes, when I noticed the free kind of cranking I did suspct the cam, I've
    recently replaced the cam belt so I didn't think it would be broke so soon.

    Anyway I checked the cam and it's still Rotating, don't know if it;s slipped
    but adding more petrol would probably be the quickest fix I'II try that.

    I put a 5 litre tin of petrol first off.

    Paul
     
    Paul Hosking, Sep 8, 2006
    #6
  7. Once our '85 765T ran dry, and the main pump failed. I've seen a couple
    other mentions of it when the tank runs dry... maybe the stress of running
    without gas can kill an old main pump? If you crank the car for a moment
    (returning to the "run" position) and then listen to the main pump
    underneath the car under the front left seat, you should hear it run for
    five seconds.

    Mike
     
    Michael Pardee, Sep 9, 2006
    #7
  8. Paul Hosking

    Paul Hosking Guest

    OK, I've had the timing cover off, all seems OK there,

    I removed a spark plug and there is compression.

    I have seperated a union in the fuel line and there seems to be presure,

    But as Mike suggested I listened, after cranking and there seems to be no
    sound coming from the fuel pump,

    I assume it's a fuel pump? any other way of testing to know for sure?

    Paul
     
    Paul Hosking, Sep 9, 2006
    #8
  9. Paul Hosking

    zencraps Guest

    zencraps, Sep 9, 2006
    #9
  10. Paul Hosking

    Paul Hosking Guest

    looks like the pin that holds the cam chain to the crank has snapped and
    it's not looking to good.

    any chance of simple repair?
     
    Paul Hosking, Sep 13, 2006
    #10
  11. Paul Hosking

    James Sweet Guest

    Cam belt you mean? Or is this something else? I'd be really curious how
    the key snapped without the belt breaking. Either way that's a
    non-interference engine so if you can fix the broken piece there
    shouldn't be any internal damage.
     
    James Sweet, Sep 13, 2006
    #11
  12. Paul Hosking

    Paul Hosking Guest

    Are you sure it's a non-interference engine, ahh and yes cam belt!
     
    Paul Hosking, Sep 13, 2006
    #12
  13. Positive - it has been addressed at great length before. Once you get it
    back together it should be fine.

    Mike
     
    Michael Pardee, Sep 13, 2006
    #13
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