Won't Start Have confirmed there is no power to the fuel pump. Did this by interupting wire going to fuel pump and checking voltage - none. The gas gauge reads way past full when ignition is on. Lately engine cranked longer to start. Prior to this it was a quick starting motor. Any connection? Engine cranks normally. Does not start. Thank you for any help.

Sounds like you dont have any power going to your fuel pump. You will have to drop your tank and with a light tester check the red wire for power. If you cant tell with one is the red wire it will be the secound wire going into the plug. If you dont have any power there then make sure your fuses are good. You will need help with this because it is very had to reach the key switch and check the wire the same time. It is on a relay switch and only stays on for 5 secounds. Good luck.

check your fuses. if there is no power to it than thats a great place to start.

Check the fuel injectors, with the key on one side of the two wire connector will have battery voltage, if none is present then check the ECM fuses in the underhood fuel box.

The poor performance of the car makes these faults to come up and undermine the working of the engine thereby resulting in the engine not firing.

So to start off we need to check from the fuel tank. Check if the fuel contains impurities and specially water. If so this can come up with the pumping when the tank gets empty and produce misfiring, splutter and jerks. So a check on the fuel filter will confirm this as it will be seen, if so remove and clean tank and change the filter. We then come to the fuel pump/carburetor as the fuel mixing and pressure is determined in this section. You need to have the pump calibrated if the pressure at the injector is low.

Then we must check with the electrics. The spark intensity is most important .Remove all plugs to check gap and condition of plugs. The black plug indication will confirm that the performance is bad whereas a fully fired plug without deposits must be the ideal view. Check the HT coil and the HT wires, if the intensity is bad this must be swapped and checked to confirm. DO NOT CHANGE any part without a confirmation by trying with a replacement from another vehicle or friend. Finally the LT trigger to the coils must be checked be it from the platinum points or an electronic ignition unit. The voltage of the trigger must be high to give the best HT output.

Now use a strobe to check the Timing on the engine. Adjust if needed to see the TOP DEAD CENTER-TDC- mark. If there is valve noise make sure that the tappets are set properly so that the valves seat firmly for the best compression. Also check compression of engine if there is imbalance on the engine or reduced power.

Check and make sure there is power going to fuel pump.Turn key on as you test wire (at pump)

If you open your fuel cap and have someone turn the ignition on you should hear a buzzing noise in the gas tank for two seconds. That's your fuel pump. Also go to the pressure regulator under the hood, access the pressure tester valve, press on the valve and have someone crank the engine for one second. You should get gas coming out.

Good battery, good starter. Leaves spark and fuel.
1. Remove 1 spark plug wire from a plug. Hold near engine block while someone "cranks" the engine.
- Spark (yes/no)
If yes, issue is fuel. If no, remove distributor cap and check for cracks. Also clean inside to remove rust and dirt. Besure that inside of distributor cap is reasonably clean and rust free. After that, reinstall cap.
Try to start engine. IF it is exactly same symptom.....
Check input voltage to coil (high voltage source for distributor). Is 12volts present? If not, troubleshoot wiring between battery source and coil. Be sure to include the fuse for "ignition" in fuse box.
If yes.....Confirm high voltage is present at center (input) wire to distributor (CAUTION:- 30,000 volts could be present... do NOT touch bare wire.) Use insulated plyers or similar to place this center wire near engine block to check for spark. Note that this voltage source is powered on as soon as the ignition key is in the "run" position.

Replace coil if no high voltage is coming out. Replace distributor cap and rotor if high voltage is coming in to it, but not leaving and getting to spark plugs.

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Confirm fuel is getting to intake.
I spray starting fluid into intake while cranking engine. It will "fire" if all else is good.
If it "pops" or fires, then you have a fuel feed problem... between tank and intake manifold, shoot fuel filter, fuel pump and otherwise confirm that gas is moving to intake from gas tank.

Good luck.

It could be a fuse or relay.. Find the location of them in your maual..

This injector set-up needs a specific fuel pressure supplied to the fuel rail to even start, much less run properly. The fuel pump is immersed in fuel inside the gas tank to keep it cool and not burn up. Running the fuel level low causes more heat in the pump and interuptions in proper fuel pressure. AC/Delco pumps have proven to be a reliable fix, the aftermarket pumps only last for a month or two sometimes. Check fuel pressure under the hood and power and ground to fuel pump at electrical harness at top of gas tank. This truck needs a fuel pump.