99 ram 1500
Asked by J_DaKiDD Nov 29, 2015 at 06:14 PM about the 1999 Dodge RAM 1500 ST Quad Cab LB 4WD
Question type: Maintenance & Repair
Having a problem with my 99 ran 1500. Truck
cranks but wont start. I changed out fuel pump and
there is gas at the fuel rail but no gas getting to
motor. Tuck will start if I spay starting fluid and will
stay running if I keep spaying but once I stop truck
dies out. Please help
6 Answers
Need to see if there is power at the injectors. Check and make sure the security system is off because if it is on it will shut down the power to the injectors.
Filter is with the pump in the tank I changed that out and there's power to the injection. How Do I Check For Security System
I believe by locking and unlocking the doors with the remote, but you say there is power to the injectors, but did you have help checking? Because there is only power to the injectors when you turn the key to the start position, once engine is started the signal (power) is a pulsating voltage.
I'm sorry here, I am tiered. What need to be done is a bleed down test on the fuel system. Fuel pressure gauge hooked in line or at the Schrader valve, let it build to pressure and turn the key off. What ever the pressure is, it should not drop more than 5 lbs. if it does, there is a leak either in the regulator, lines, or injectors. In the mean time I will try and find out what your fuel pressure should be on that one.
Good morning. That fuel pressure should be 44 to 54 lbs. A deadhead check it should hold 54 lbs. min. Also no need on checking for power since the motor runs when you spray fluid, this tells me all that is working. Fuel is going to be the issue. Make sure the fuel pump is turning on and priming up. I must have ben tired last night. Still may need to do the bleed off test.
