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help!!

Discussion in 'XJ Technical Chat' started by martzx9r, Jan 23, 2015.

  1. martzx9r

    martzx9r New Member

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    Looking for some hints on getting xj400 running, we brought it running renewed clutch, had take out engine to remove broken exaust studs, put back together, turning over fine just wont fire????
     
    martzx9r, Jan 23, 2015
    #1
  2. Bigshankhank

    Bigshankhank Active Member

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    Bad ground somewhere? Man there is a lot that could be disconnected when you took the engine out, get a wiring diagram and make sure the ignition circuit is the way it should be. Do you have spark? If not, there's your problem. The parts that make the engine spin and the ones that control the spark plugs firing are two different electrical systems. Do you have compression? Check the valves to ensure none of them are stuck open causing a compression loss. Is the engine getting fuel? Just because it ran "before" doesn't mean the carbs are clean and functioning properly.

    Compression
    Fuel Mixture
    Spark

    Must have these three things to run.
     
    Bigshankhank, Jan 23, 2015
    #2
  3. martzx9r

    martzx9r New Member

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    ok, have'nt checked compression yet, will do that and check and clean carbs, we got a good spark, and will let you know the outcome, thank you for the advice,
    cheers mart
     
    martzx9r, Jan 23, 2015
    #3

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