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Q: stalling problems after initial start up on 1992 GMC Vandura 3500

Rookie cbe0621eac06868b3efe0d8d1d3611e23c60d3114864ea2ec19a68cfbd3eebab
it starts runs for about 15 seconds then the injectors spray only intermittently causing the stall. if we try to start it again it won't unless we cycle the key. we do not have a fuel pressure gauge but the recent work I had on the van included a fuel pressure test which was "within range"
possible fouled injectors.
rec. fuel system clean. ethanol treatment to 1 tank premium fuel. result may take drive time.
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