Why my 1999 dodge ram 1500 5.9L won't start?

Answer 1

First of all is the spark bright blue...if so you have strong good spark if not you need new plugs, wires, cap and rotor. Next thing is the ram carborated? If so take off the air cleaner and have someone press the gas pedal. if you hear/see/smell fuel the you're getting fuel to the intake if not check for a clogged fuel filter or bad fuel pump. Another cheap test is buy a can of carborator cleaner and spray a small amount into the intake. Truck starts then you have a fuel delivery problem. There is a possibility that the timing chain is worn and has jumped teeth on the gears. If this is the case, the valves will be out of time with the crank position and it won't start. In my '86 Ram, the gears were nylon which became brittle so teeth broke and allowed the chain to jump. I replaced the gears/chain (in 1996 at 180,000 miles) and it has gone another 100,000 miles.

Answer 2

the problem = bad gas and bad fuel pump. even worse, the fuel pump is in the gas tank

My truck ran beautifully last night when I parked it, then this morning it won't fire at all. the battery seems to be working fine. I have narrowed it down to either the fuel pump or maybe the crankshaft position sensor. Any further info would be nice thanks.

I have a 1994 Dodge ram 5.9 and thought my fuel pump was bad but it actually was a blown fuse for the engine. The problem was the overdrive lockout sensor in the transmission, when we dropped the tranny pan the twisted wires for the sensor were broken down and shorting out to each other. It only cost 38.00 for the sensor. but when that fuse blows it kills spark and power to the fuel pump. it plugs in on the drivers side of the transmission, the wire is lime green with a black stripe at the plug

Answer 3

Check the fuel pressure at the Schroeder valve, it should be 45psi before starting. If there is not enough fuel pressure it won't open the fuel injectors.