I had a starting issue with my 93 t100 3.0 v6 last week. Changed the fuel pump and then it started first crank every time. Ran great for a week and then yesterday it died on the freeway and would not start back up. Had it towed home, changed the fuel filter last night(thought it may have been clogged) and it still won't start. Went out first thing this morning to try to start it and it just turned over and wouldn't start. Crawled under the truck, hit the tank with a hammer, then turned the key over and it fired right up, ran good for about 30 seconds then died. Tried that process again and it will not start at all even if I hit the tank. Had someone turn the key over while I was under it and I couldn't hear the fuel pump. So I'm thinking maybe I have a faulty fuel pump or maybe a bad circut opening relay. Any input or advice would really be appreciated.
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