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I hate to bring this problem up but have just about gone bonkers over this problem with my 1989 Chevy K1500 truck. It has a 350 TBI engine. The first thing that happened was it would not start unless it was primed by starting fluid at the TBI. Then I had it out one day a barely got back home. It acted like the engine was running out of gas. I have had this truck 20 years bought it from the original owner. This is the first serious problem I have had. I have no service engine alarms. The bulb is good in that light as it comes on when the key is turned on. I have done the following; changed TPS, OXYS, Plugs, Distributor cap and rotor,Fuel filter twice and for that hard job a new AC-Delco fuel pump. I had 10# at the TBI with the old pump but a GM guy said that was not enough. I don't know what the new pump is putting out as I had a leak at a gas fitting by my guage and I had to pull the muffler-tailpipe to get the tank out and was worried about a fire running with that leak. I can tell you this I get the 2 second pump run with the key on but it will not prime the engine to start it. Then I can hit it with starting fluid and it will start in open loop cold. It is rich with plenty of fuel and will idle and rev up. Once it heats up it goes into closed loop it will not idle or keep running without higher RPMS if you open the throttle fast at all it acts like it is running out of fuel and quits. This is the same as with the old fuel pump. I have checked battery cables, compression is better than 170# on all cycl, timing shows ignition steady not jumping around. I now have a hatch in the bed for the fuel pump so I will not have to drop that 36 Gal tank again I hope. A side note is the tank was very good on the inside very clean. Please bear with me all help will be appreciated. My 1956 Ford has been a joy to restore. Thanks Gene Stoehr Kuttawa Ky.
56 VIC Gene Stoehr Sr.
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