Question about 2000 Hyundai Tucson

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Heat related transmission problem on Galloper (not given in list).

1998 Galloper being driven yesterday on 500 km blacktop journey in the heat of Arabia developed "kangaroo petrol" symptoms at 200 km. External temperature was above 40C and rose to over 50C while problem became worse. Problem disappeared when temperature fell to below 39C as sun set and did not reappear on return journey during darkess. Obviously this is heat related but what was/is wrong?

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  • t99 May 30, 2009

    Thanks very much indeed for the helpful diagnosis. I like to know 'why' so please tell me how excessive temperature affects the oil in this way and produces the 'kangaroo petrol' symptoms. What is happening mechanically?

  • t99 Nov 30, 2013

    The problem turned out to be due to the petrol "gassing" in the heat on its way to the engine. A fuel cooler (like an oil cooler) is the solution causing air to pass over the fuel thus drawing off the heat.



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Transmission oil level low is the biggest cause of transmission overheat as well as road surface temp. Air flow over radiator and under vehicle. All air deflectors under front must be in place and not damaged. Avoid overdrive in hig temp conditions. Stay in third gear.

Posted on May 30, 2009


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