why does my truck cut off after I crank it on 1990 GMC 1500 Pickup

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Why does my truck cut off after I crank it,it usually takes about 10-15 tries before it finally keep running and not cut off . After it finally catches it's okay but what causes the delay in getting started in the mornings.
(1) Answer
could be fuel pressure. it is a low pressure system and if your fuel pump is weak, it will take time to bring the system up to pressure.
have a shop check the fuel pressure first time in the morning to verify.