Question about 2000 Hyundai Sonata

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(2000 Hyundai Atos 999cc) can you please solve my car problem.

Problem is that. car start perfect but if i drive 15 to 20 min. engian power gos very down like engian has no power. if i stop the car 2 or 3 hrs so i can drive 10 to 15 min. again. my mechanic said that it need to be fully service and he did fully service ( he changed the spaark plug, engian oil, air filter, oil filter, patrol filter) but after that it has same problem. then he said that it is ignition coil problem and he changed brand new ignition coil as well but after it still has same problem.
please help me Thanks

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  • Anonymous Mar 30, 2014

    Hello,

    Whenever i run my engine for like 10-30 mins or more. if i happen to switch off the ignition for any reason the car won't start immediately again until i allow it to cool down for close to 15-30mins.

    Please what could be the problem? Hopt to hear from you soon

    Regards
    Tolu

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Hi this may sound odd to you but worth looking into ?? from what you have described may i suggest that your problem may be the fuel tank is becoming vacuumed due to possible tank breather being either blocked or kinked ? this will allow car to start ok and run for some distance whilst the engine is using fuel drawn from the tank via fuel pump ok? then as fuel is used it is not being replaced by atmosphere air in tank ? resulting in vacuum so engine is starved of fuel as pump cannot overcome vac and fuel delivery to engine slows ? but when you stop the vac will slowly clear and all is ok till next time ? try this temporary leave tank filler cap loose an road test if no prob's then check the breather pipe normally clipped alongside filler pipe? under wheel arch ? where all rain/mud etc will come into contact? hope this helps ?

Posted on Nov 19, 2008

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