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1999 Suburban will not starts after any length of time....



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Too brief, at least for me, bad gas? How long is it sitting before starting up? Clogged fuel filter, fuel pump, dirty injectors, bad spark plugs, just naming some things that could be the problem......

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Fuel pressure is at 55lbs at all times. Suburban will set for a few hours and will crank but not start. I sprayed carb cleaner into the intake and it will start right up and it will continue to start until it sits for a few hours. Once it starts it runs great, no mis-firing. I believe it's something to do with initial start up, how about TPS switch or Coolant sensor or Spider valve? Thanks again for your help.

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