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1990 240 starting problem when cold 200 1990

posted by  Robert1949 on  Thu Mar 14 16:35 CST 2013
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last visit: Mon Jul 22 14:16 CST 2013
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When the temp drops to minus 10C or colder this 1990 240 has trouble starting. It will start immediately, then flood itself out after a couple of seconds. Then very difficult to start, if at all.

Sometimes can get it to start by holding pedal to the floor and cranking for considerable time.

Any ideas on where I should start looking? it gets lots of gas (plugs are wet when this happens).

Thanks in advance.








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    1990 240 starting problem when cold 200 1990

    posted by  Trev29 on  Fri Mar 15 04:51 CST 2013
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    last visit: Fri Oct 17 05:56 CST 2014
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    Later 240 models did away with the Cold Start Injector and left the ECU to manage the extra fuel through normal injectors.

    Try disconnecting the CSI, if you have one, to reduce fuel input.

    What OBD1 codes are you getting?
    --
    1980 245 Canadian B21A with SU carb, M46 trans, 3:31 dif, in Brampton, Ont.








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    1990 240 starting problem when cold 200 1990

    posted by  matt82dl on  Thu Mar 14 20:38 CST 2013
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    last visit: Mon Oct 13 10:46 CST 2014
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    Robert I had a weak spark when it was very cold leading to intermittent starting. The problem turned out to be the 25A fuse on the driver fender. The fuse was OK but the holder was faulty. Sometimes it started, sometimes it didn't. Funny thing is it would start with the assistance of some starting fluid (dangerous stuff)
    Replace the fuse holder with a watertight version that can found at any big box autoparts store.
    matt
    --
    '90 245 285k, '93 945 296k








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    1990 240 starting problem when cold 200 1990

    posted by  aleekat on  Thu Mar 14 19:48 CST 2013
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    last visit: Fri Oct 24 13:19 CST 2014
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    At those temps, I would suspect weak spark or possible Fuel pressure regulator. Holding the peddle down draws more air. Not sure if this will apply to your 900.
    http://www.brickboard.com/FAQ/700-900/EngineSensors.htm#DiagnosingECTFailures
    --
    Post Back. That's whats makes this forum work.








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    1990 240 starting problem when cold 200 1990

    posted by  artwork240 on  Thu Mar 14 16:46 CST 2013
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    From what your saying it sounds like its dumping fuel on a cold start. If your coolant temperature sensor is not reading properly it can cause that to happen. Just a thought.
    --
    Teach a man to fish and he will never go hungry. Teach a man to rob a bank, he will never go fishing again.








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      1990 240 starting problem when cold 200 1990

      posted by  Robert1949 on  Thu Mar 14 17:39 CST 2013
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      last visit: Mon Jul 22 14:16 CST 2013
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      I'll see if there is a loose connection or something. Is there any way to verify if it is working or not or does it just have to be changed out?







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