My diesel truck won't run for more than ten seconds.
I have to crank the engine for about twenty seconds before it finally starts. It runs for about ten seconds and then dies. Whether I accelerate or just let it idle it runs for about the same amount of time and then dies.
I changed the fuel filter. The problem remained.
Each time I start it, it takes about the same amount of cranking before it fires. I suspect that the fuel filter has to fill up. Once after it died, I removed the fuel filter. The fuel was down about an inch.
I cranked it with the filter removed. Fuel spurted from the filter housing.
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no year, no engine size. no joy.
for all I know its diesel.
does it crank over fast.
if yes, does it start, no
if it dont start did you check spark on all spark plugs (gas engine)
if diesel did you check the glow plugs.
does test fuel start car? even for 3 seconds.
if a gas car is the ASD relay dropping out. after running for 2 seconds?
It sounds like it could be the transfer pump. Turn the key on and then crank the engine for about 1 second but leave the key in the run position and listen for the transfer pump to run. It should run for about 15 seconds after you stop cranking. If not, then you will need to replace the transfer pump with a in-the-tank conversion kit if your is mounted on the side of the engine block below the fuel filter housing. If you already have the in-the-tank pump then it might be siezed or the "sock" might be plugged up with alge or other contaminants. I usually lift the bed rather than removing the tank to replace the fuel module. If the check engine light is on you might want to have it scanned for codes to make sure since the modules can be spendy.
a diesel engine can only cutout when overheating, loss of diesel fuel and air leak in the fuel system. if you know how to bleed or ask somebody to bleed right after it stall, then start the car, if it starts immediately then it is sucking air.
The fuel system has a bleeder located on the engine, located near the passenger side front of the engine. Open the bleeder, turn the engine over until you can see fuel come out on the ground near the front of the engine. Close the bleeder, attempt to restart the engine. It may take a couple of tries, but it should start after five or six attempts. Do not run the starter for more than twenty seconds per attempt, with at least one minute between attempts.