Ping : Rod Gray , Re: Pleeease Help !!! 240 cold start problem

Discussion in 'Volvo 240' started by Guest, Jul 20, 2004.

  1. Guest

    Guest Guest

    Thanks for the input Rod, much appreciated.

    You mean this problem is caused by using low octane petrol AND carbon build-up at valves?
    But I use 98 unleaded octane petrol. So is it still ok to use 92 or 93 (lower than my usual 98) with some Techron?
    Knowing that i use 98 octane unleaded now, I think you would want me to use 100 octane petrol with some Techron?
    Please advice.

    The "valves" you mentioned, are they the regular engine valves, located in upper half of engine?
    If so, I did a complete TOP OVERHAUL 4 months ago. Will this overhaul rid the valves of the carbon you mentioned?

    Regards.
     
    Guest, Jul 20, 2004
    #1
  2. Guest

    Rod Gray Guest

    If you did a head job 4 months ago, the valves are probably OK with no build
    up, but the symptoms would indicate that. Another cause could be the
    throttle position sensor being so close to the on position that when it
    heats up it is in the off position. Try cleaning the throttle body and set
    the TPS. You should hear it click when you turn the bellcrank. Try it hot
    and cold and see if there is any difference.

    (lower than my usual 98) with some Techron?
    use 100 octane petrol with some Techron?
    the valves of the carbon you mentioned?
     
    Rod Gray, Jul 21, 2004
    #2
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