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Thread: Hot start Issue

  1. #1
    Skyline Enthusiast Registered User
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    Hot start Issue

    Hopefully somebody can help me.

    2000 R34 Neo Engine

    Cold start is perfect.

    When the car is hot car will not start, it will just keep turning over but not fire until the battery dies.

    I can hear fuel pump go.

    I thought it maybe flooding due to the coolant temp sensor trying to cold start. Replaced the coolant temp sensor but problem still persists.

    When hot and i unplug the coolant temp sensor the car starts first turn of the key then reconnect and carry on with my journey.

    Had a diagnostic run on the car and no codes stored when it doesn't start.

    Anybody have any ideas what it could be?

  2. #2
    Club Secretary Club Member Jez's Avatar
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    I've seen this a few times, it's a really odd fault. Change the CAS and the problem will go away. This usually happens to later R33 GTR's, and I have no idea why it happens.
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  3. #3
    Skyline Enthusiast Registered User
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    Quote Originally Posted by Jez View Post
    I've seen this a few times, it's a really odd fault. Change the CAS and the problem will go away. This usually happens to later R33 GTR's, and I have no idea why it happens.
    Might be a retarded question but CAS?

  4. #4
    Club Secretary Club Member Jez's Avatar
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    Cam Angle Sensor.

    It's the round sensor at the very front of the engine.

    It measures the cam angle so the ECU knows when to inject fuel and fire the spark. It works by shining a light through holes in a disk onto a light sensor, so it shouldn't be affected by heat, but it does.

    I would suggest finding someone with an R34 to swap it with to confirm the diagnosis, they aren't cheap.
    www.Skyline-Owners-Club.com

    The last car club owned solely by it's members

  5. #5
    Club Secretary Club Member Jez's Avatar
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    Oh and moving it will disturb your ignition timing, so you'll need to retime the engine after refitting it.
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