priming the fuel system

redjohn

Member
Just resurected an International 1066, with a 1466 motor, from a shed fire.
I've had the motor rebuilt, and I've rewired the entire tractor, and am going to do a start up very soon.
I have never primed up the injection pump and lines, on anything, and am wondering if anyone would give me a step by step instructions, on this proceedure.
I know there is a pump on the injector, and when I pumped it, it seemed like fuel was being sucked into the line, and then pushed back into the tank.
I appreciate any and all advice.
 
(quoted from post at 16:09:58 09/23/12) Just resurected an International 1066, with a 1466 motor, from a shed fire.
I've had the motor rebuilt, and I've rewired the entire tractor, and am going to do a start up very soon.
I have never primed up the injection pump and lines, on anything, and am wondering if anyone would give me a step by step instructions, on this proceedure.
I know there is a pump on the injector, and when I pumped it, it seemed like fuel was being sucked into the line, and then pushed back into the tank.
I appreciate any and all advice.

What you need to do is crack all the fuel lines, from the pump to the injectors. As you are pumping the hand pump, start closing the ones that are oozing fuel. Starting at the pump, and working your way to the injector. Once all the connections in a line are bled, that injector is ready to fire. sometime it helps to crack the return line as well.

Once it is running, crack each connection at the injector, to finish bleeding air out of the system. When it quits sounding like marbles bouncing around inside the engine, retighten the connections.

You may need to do this a time or two to get all the air out.

If your not getting fuel, to the primer pump, try using an air hose in the tank opening to pressurize things abit.
 
Bleeding a Diesel Fuel System


Start at the fuel outlet of the tank (inlet to the filter). Shut the tank valve, remove the line at the filter inlet and holding a suitable container to catch the diesel fuel, open the valve. You should have a CONTINUOUS rush/flow of fuel out of the line. If it dribbles or is intermittent, check the fuel cap for a blockage of the fuel vent or the strainer upstream of the valve for clogging. The strainer/screen is attached to the shut-off valve, and is positioned up inside the tank. You will have to drain the tank and pull the valve to clean the screen.
If you have good fuel flow at that point, reconnect the line and open the bleeder screw at the top of the filter. Turn on the tank valve and wait till you have a steady flow of fuel with no bubbles at the top of the filter, then close the bleeder screw.
Your pump may have a bleeder screw. If so, open that until fuel streams out with no bubbles, then close it. If you cannot identify the bleeder screw, loosen the inlet connection at the pump and purge air at that point.
Go back and make sure ALL the fittings in the fuel delivery system are tight so they cannot suck air.
Make sure the battery is fully charged. Loosen the fuel fittings at the injectors, either one at a time or all at once. Crank the engine till you see all fuel at the injector fittings and then tighten the fittings. If you do indvidual fittings, the engine will usually start before you get to the last fitting.
Alternatively, you can "tow-start" it to save wear and tear on your starter. Leave the injector lines cracked open at the injectors at first to purge the lines. Then tighten them up and she should start.
Your injection pump puts out a very small amount of fuel (high pressure/low volume). BE PATIENT. If the lines are totally empty, it takes a lot of cranking to fill them up.
sixbales & Jerry/MT
 

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