Is the pressure regulator operating? You need at least 30 lbs to fire an injector and make sure the check valve it it maintains 30 lbs with the engine off.
You will need to put the lifter in a pressurized cabinet or else you can try to squirt oil into the little hole in the side of the lifter it might give you enough to have the engine pump it up. Hope this helps.
You need to put a pressure bleeder on the system and bleed the air from it. The pressure bleeder will force the air from the system and lines when you open the bleeder valve.
The cylinders are numbered from front to rear with the left bank.driver's side. being numbered 1,3, and 5 and the right bank being numbered 2,4, and 6. The firing order is 1-6-5-4-3-2
A code P0304 may mean that one or more of the following has happened: Faulty spark plug or wire Faulty coil (pack) Faulty oxygen sensor(s) Faulty fuel injector Burned exhaust valve Faulty catalytic converter(s) Running out of fuel Poor compression Defective computer
If there are. no symptoms, reset code and see if it comes back
check the ect switch by the thermostat outlet it looks like a temp sw. it tells the computer the temperature outside is and that determines how much fuel goes to the tbi. In addition, you want to check, the egr valve, its the big round piece on the intake behind the tbi. To check it reach inside the egr and pull up on the bellows In the center while putting your finger over the vacuum hose that is attached to it and see if the bellows stays up if not the egr is bad. Hope this helps.
There should be a VIN number somewhere on the block. If you can locate the VIN, then go on the internet and Google "VIN decoder". It will give you the original year, make and model of vehicle it was installed in.
If it is on the passenger side of the truck then you must remove the battery and you will see and opening that will allow you to depress the clip on the wiring and then you need to rotate the bulb to pull it out of the mounting. To assemble just do the reverse of this. If that doesn't work. You can remove the front grille and the mounting for the head light assembly has 4 bolts and you can dismount the assembly from the truck and change the bulb. If you do remove the grille be sure not to deal with the headlight aiming screws. The 4 screws being removed will not mess up the aiming of the head lights. Hope this helps.
Check the fuel pressure & flow rate at the fuel rail, but FIRST - if you have a "Check Engine" light, have someone get the computer's error codes with a first-generation OBD scan tool.
Is it getting fuel? Turn key to on position but do not start, listen for fuel pump to prime. It may be easier to remove gas cap. You should hear a buzzing sound for 2-3 seconds. If the pump is priming, I would check fuel pressure next. It could be a weak or failing fuel pump.
