1991 GMC sierra 2500 4x4 350 missing and no power?

[bub350]

i was driving today it started missing and had no power was like that for about 15 min then ran good
has new spark plugs and wires

 

[Molson02536]

i was driving today it started missing and had no power was like that for about 15 min then ran good
has new spark plugs and wires

Try replacing your fuel filter and check the ICM, and fuel pressure regulator. Also cleaning the throttle body would help also. Keep us posted, be glad to know your got your Sierra running 100% again soon.