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HOW DO YOU SET THE TIMING ON A 1997 GMC SAFARI ? IM NOT GETTING ANY CODES on 1997 GMC Safari

AND IT BACK FIRES THRU CARB WHEN I ADD STARTING FLLUID.

Asked by for the 1997 GMC Safari
Why are you using starting fluid? It is going to backfire every time you spray this into the throttle body, good source for a fire as well! If no start, fuel pump module is the most likely suspect. Fuel pressure needs to be checked IF a no start is your trouble.
I USED STARTING FLUID INSTEAD OF GAS FOR THE PURPOSE OF NOT TO START A FIRE, PLUS MY FUEL PRESSURE IS AT 60 PSI, AND THE LAST TIME I REPLACED FUEL PUMP WAS LAST YEAR AND WHEN I SPRAYED STARTING FLUID IN THROTTLE, IT STARTED IMMEDIATELY AND DIED OUT, THIS TIME ITS DIFFERENT IT SEEMS. ANY OTHER SUGGESTIONS? I REPLACED FUEL PRESSURE REGULATOR AND CHECKED TIMING, ALSO I'M GETTING GAS THROUGH INJECTORS. BY THE WAY, HOW DO I SET THE TIMING?
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Why are you using starting fluid? It is going to backfire every time you spray this into the throttle body, good source for a fire as well! If no start, fuel pump module is the most likely suspect. Fuel pressure needs to be checked IF a no start is your trouble.
I USED STARTING FLUID INSTEAD OF GAS FOR THE PURPOSE OF NOT TO START A FIRE, PLUS MY FUEL PRESSURE IS AT 60 PSI, AND THE LAST TIME I REPLACED FUEL PUMP WAS LAST YEAR AND WHEN I SPRAYED STARTING FLUID IN THROTTLE, IT STARTED IMMEDIATELY AND DIED OUT, THIS TIME ITS DIFFERENT IT SEEMS. ANY OTHER SUGGESTIONS? I REPLACED FUEL PRESSURE REGULATOR AND CHECKED TIMING, ALSO I'M GETTING GAS THROUGH INJECTORS. BY THE WAY, HOW DO I SET THE TIMING?