Question about 2002 GMC Sierra

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Fuel don't ignite in cylinder nr 3

My car's cylinder nr 3 don't burn the petrol. All the checks was done, like timing was checked, there is no burnt valves and no bent valves. The fuel injectors was replaced and the computer was connected and there is no error messages as everything was ok/successful. The sparkplugs was changed and also the sparkplug wires. There is enough spark at all four sparkplugs and the compression test was also done. Everything is ok. What else can be the cause for one cylinder not to burn the fuel?
Thanks Hugo

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  • paulwillywil May 11, 2010

    are you sure there is fuel to number 3?



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Posted on Mar 11, 2009

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What vechile is it ,is it sparking on no 3,maite be low compression

Posted on Feb 23, 2009

  • myearwood0 Feb 23, 2009

    is the injector switching



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