2.8 Won't Start When Warm

Discussion in 'Capri Chit Chat' started by 04grayst, 18 April 2018.

  1. 04grayst

    04grayst Registered Capri Power Member

    Joined:
    21 September 2011
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    Location:
    Northumberland
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    1987 2.8i Special, Subaru Legacy 2.0 Sports Tourer, Borrows: Defender 110
    Hi all apologies for the long post, some technical help needed!
    I've finally got my 2.8i out of hibernation, it's been on trickle charge and started fine first turn. I have made a few short journeys with the engine only off for 5 minutes or so and it has restarted fine but the 3 times I've left for more than an hour she just turns over with no hint of life though I can smell fuel. Doesn't seem to be a hot starting problem as there has been time to cool down on these occasions and starts fine if stone cold or just turned off. Tonight I tried every 10 minutes for nearly 2 hours then suddenly started and drove fine. Any ideas? Anything to check? Many thanks
     
  2. robt100

    robt100 Registered Capri Power Member

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    Lots of ongoing projects
    Dodgy temp sensor perhaps? Or a sticky WUR?
     
  3. Clockwork Orange

    Clockwork Orange Electrical ??? what like .. bzztt Feck !!! Staff Member Moderator

    Joined:
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    electrics and systems don't degrade for being switched off

    How good is the fuel in the tank, how long has it been there..
    Its well accepted now that modern UL fuels degrade very quickly, so may be worth draining the tank and getting fresh fuel in..

    Seen your Capri, its a cracker .. am more inclined to think its a fuel problem, rather than a car problem.
     
  4. Caprick1

    Caprick1 Registered Capri Power Member

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    2.8 Efi Turbo Race lump running MegaSquirt, Kawasaki Ninja ZX6R
    Pull the plug on the cold start injector. You might be getting to much fuel when hot.
     
  5. Clockwork Orange

    Clockwork Orange Electrical ??? what like .. bzztt Feck !!! Staff Member Moderator

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    that's a quick fix, but what is the fault?
    better to cure the problem at source if possible
     
  6. Caprick1

    Caprick1 Registered Capri Power Member

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    2.8 Efi Turbo Race lump running MegaSquirt, Kawasaki Ninja ZX6R
    True but until you know the fault and trace it to the source. You are chasing your own ass.
     
  7. chris249

    chris249 Registered Capri Power Member

    Joined:
    18 July 2009
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    Cambs
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    1.6 LS, 1.6 Laser, 2.8
    Fuel pump might be getting hot for some reason? mine wouldn't start for an hr on a very hot day last yr after being on a run, fuel pump was making a lot of noise guessing on the way out, new bosch one seemed to cure it [​IMG]
     
  8. Stroker

    Stroker Registered Capri Power Member

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    Sierra Ghia Estate 4x4
    It could be the injection system not holding it's fuel pressure long enough once switched off. This can cause the system to get vapor locks due to heat causing fuel in the pipes to boil.
    If you have access to a pressure gauge you could check this. Or just replace the o-ring in the pressure regulator anyway to see if it helps. They cost very little to try. It's the green o-ring in this picture.
    My link
     

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