Question about 1999 GMC Sierra

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Check for fuel pressure

I have purchased a fuel pressure kit but do not have a repair/service book. I would like to know if I can get an idea of where the fuel port might be located to attach the fuel pressure gauge to check for pressure?

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Follow your fuel rail from tank to will look like a big valve stem cap.i think its blue take it off and push down on the pin inside while motor is it easy and if it smells like fuel it should be it.or go to auto zone and they will check it.

Posted on Nov 15, 2008

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