Idle problems on my 1981 244 GL

Discussion in 'Volvo 240' started by Augusto, Jun 30, 2017.

  1. Augusto

    Augusto

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    Hello everyone, I recently purchased a mint condition Canadian built 1981 244 GL with the B23E engine and the Bosch CIS fuel injection, I've been wanting one of these cars for almost ten years and finally I got one up to my standards.

    There are few things that had been driving me crazy since I got the car tho, which are the idle, warm starts and excessive fuel consumption. When at idle you can notice that the engine shows a considerable amount of vibrations,which you can feel while you are waiting on the lights, it disappears as soon as you step on the gas. It starts right up when cold, but if you let it sit for more than an our and attempt to get it started, It gives you a hard time and when It finally fires up, it feels like a carbureted car with a flooded engine.

    Yesterday I had replaced the fuel injectors, since all my problems seemed to be related to plugged/dripping injectors, but for my frustration it didn't changed the old problems, even that the original injectors were nasty dirty. Now I can only considerate a leaky injector mount,since I only replaced the four injectors and their respective O'rings.

    Since I got the car, I had replaced the respective items:

    Spark Plugs
    Distributor Cap
    All the wiring to the spark plugs
    Fuel Injectors

    I also noticed that my vacuum booster hoses are not connected to the engine, but I had taken the car to a mechanic and he said it has nothing to do with the idle, he said as long as there is no emission regulations I don't have to worry about this vacuum booster(there's a illustration attached).

    Thank you all for your patience.

    Cheers
     

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    Augusto, Jun 30, 2017
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  2. Augusto

    marktham

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    I've got the same engine, same issues! (Except I've got the rusty wagon version)

    Any updates? I replaced the intake gasket, and it almost feels like the idle is worse now. Next up are the vacuum hoses.
     
    marktham, Jan 20, 2019
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  3. Augusto

    Augusto

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    I have taken the car to a vintage Volvo specialist and he said this irregular idle is perfectly normal on this engine, since it has the high revving "K" cam. He said that the CIS makes them even rougher while at idle.

    Still struggling with warm starts, got my warm up regulator rebuilt and nothing changed.
     
    Augusto, Jan 30, 2019
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  4. Augusto

    marktham

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    Thanks for the update. I replaced my #1 spark plug wire since it had 0 continuity, thinking that had to be it, and still exactly the same.

    Perhaps I'll just have to up the idle a bit, but I'm going to still replace those hoses and clear out the throttle body first. I've also seen suggested the coolant temp sensor, which I believe is one of the screw-in sensors under the intake, but I forget the procedure for testing with a multimeter.

    I noticed mine is without the hoses on the thermostat valve (1 on your diagram) did yours have them on?
     
    marktham, Jan 30, 2019
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  5. Augusto

    Augusto

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    Mine is unplugged as well, my mechanic told me this only operates the EGR valve.
     
    Augusto, Jan 30, 2019
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