Sylvie Willis
The Ford 3000 tractor is a three-cylinder diesel tractor with a Simms mimimac fuel injection pump. The bleed screw on the fuel injector pump is located to the right of the bell-shaped part of the unit. When cranking the engine with the bleeder screw out, fuel should shoot out. If only a dribble of fuel comes out, there might be a blockage somewhere in the inlet line.
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What You'll Learn
Location of the bleed screw
The bleed screw on a Ford 3000 tractor is located on the injection pump. To find it, first locate the bell-shaped part of the tractor. To the right of this, you will find the bleed screw, which can be loosened with a 1/2" wrench.
It is important to bleed the pump before loosening the fuel injector lines. To do this, ensure the filter is full, then open the small bleeder screw until fuel flows from it while cranking. You should then open all the injector lines at the injectors until a steady pulse is seen, before tightening and attempting to start the tractor.
If you are not getting fluid when you open the injection pump bleeder screw, you may have a blockage somewhere. You can check for this by cracking open the line from the filters at the injection pump and checking for a good gravity flow of fuel. If you have a lift pump, you will need to crank the engine.
If you are still not getting diesel to the injectors, you may need to check the fuel cut-off on the pump, which is located under the top cover. It is also worth checking the metering valve, as this can sometimes get stuck.
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How to bleed the pump
To bleed the pump of a Ford 3000 tractor, you will need to locate the bleed screw. This is usually located to the right of the "bell" looking part of the unit.
Firstly, make sure the filter is full. Then, open the small bleed screw on the injection pump. Fuel should flow out while cranking. If it doesn't, you may have a blockage somewhere. Next, open all the injector lines at the injectors until a steady pulse is seen. Then, tighten the lines and try to start the tractor, making sure the stop is pushed in and full throttle is applied.
If your tractor has a gravity feed system and your carburetor has a drain plug on the bottom of the fuel bowl, you can open the fuel shut-off and this drain plug until a steady stream of fuel flows, ensuring your fuel line has fuel and no air.
If your tractor has a fuel pump, it should self-bleed with the line loose and cranking over.
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What to do after bleeding the pump
After bleeding the fuel pump, there are several steps you can take to ensure your Ford 3000 tractor runs smoothly and to prevent any further issues.
Firstly, it is important to ensure that the bleeder screw is tightly closed. A poorly closed bleeder screw can cause fuel to leak and result in damage. If the bleeder screw is difficult to turn, you may need to use a different-sized wrench or apply penetrating oil and let it sit before trying again.
Next, you should check for any signs of rough idling or reduced power. Allow the engine to idle for a few minutes and observe its performance. If there are difficulties with starting the engine or other persistent issues, you may need to consult a professional diesel mechanic or seek further assistance from a manufacturer.
Additionally, consider replacing your current primary fuel filter with an upgraded fuel system, such as an AirDog® fuel system. This can help to reduce the likelihood of having to bleed your fuel system in the future and can offer benefits such as improved fuel economy and reduced engine wear and tear.
Finally, to prevent air from re-entering the fuel system, determine how air entered in the first place. This can occur due to various reasons, such as changing fuel filters, running out of fuel, or performing work on the fuel system that allows air to enter the fuel lines. By identifying the cause, you can take preventive measures to avoid the issue from recurring.
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What to do if there is no diesel coming out
If there is no diesel coming out of your Ford 3000 tractor, there are a few things you can try.
First, check that the fuel tank is full and that there is free-flowing fuel from the filter to the injector pump. You may have a restriction that has caused the system to get air-bound. Loosen the injector lines at the injectors and engine stop with full throttle crank over to see if fuel pulses can be observed at the injectors.
If there is still no diesel coming out, the next step is to locate the bleed screw. This is usually found to the right of the line coming down to the pump from the filter, in line with the throttle shaft. Loosen this screw and remove it. You should also remove the line from the fuel filters to the pump and ensure that it flows freely. If the fuel is not flowing freely, you may have a blockage.
If there is still no diesel coming out, you may need to look for a rebuild manual online and purchase some special tools to get the pump apart. You will need a transfer pump rotor tool and a cam screw removal tool. Alternatively, you can buy a reman pump.
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What to do if the tractor won't start
If your tractor won't start, there are a few things you can check and troubleshoot before calling your dealer for service.
Firstly, check the fuel gauge and ensure that the tank is not dry. If you cannot tell, simply add a gallon of fuel and try to start the tractor again. Next, check the fuel level, the shutoff valve, and the fuel filter. If these components look okay, check the air filter and whether the temperature is too cold for the cylinder to combust the air/fuel mixture. Try moving the throttle back to idle while the machine warms up, then to half throttle and attempt to restart.
If your tractor cranks but won't start, it may be because the electrical system is not sending a spark to the igniter. You can test this by removing a plug wire from the spark plug and holding it less than an inch from the metal of your engine block. If the engine is missing one of its key requirements for starting—fuel, compression, or spark—you can check to see if the engine has compression and spark by spraying a short burst of starter fluid into the engine's cylinder. If the engine starts briefly and then dies, you know the spark and compression are okay, leaving you with a fuel supply problem.
If you constantly have to charge the battery or jump-start your tractor, you may have a bad battery or a failed charging system. If the battery won't charge fully within 8 hours when connected to a charger, you probably need to replace the battery. If the battery is okay, the blame may lie with the charging system. On tractors with a Briggs & Stratton engine, you can check to see if the alternator is working by performing a quick and easy DIY test: start the engine (jump start it if you need to), turn the headlights on, shut off the engine, and see if the headlights dim. If the headlights dim after shutting down the engine, then the alternator is okay. If the headlights don't dim, then a bad alternator, wiring failure, or failed diode could be preventing the battery from getting current to recharge when the engine runs.
If your tractor has a fuel injection pump, you may need to bleed the fuel system. Make sure the filter is full, then open the small bleeder screw on the injection pump until fuel flows from it while cranking. Then open all the injector lines at the injectors until a steady pulse is seen, then tighten and try to start the tractor. Ensure you do this while the stop is pushed in and full throttle is applied. If you are still unable to start the tractor, you may need to check for a blockage in the inlet line.
If none of these troubleshooting tips work, you may need to contact your local tractor dealer for help.
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Frequently asked questions
The bleed screw is located to the right of the "bell" looking thing.
You might be looking for the wrong thing. The bleed screw requires a 1/2" wrench, not a 1/4 inch Allen head screw.
You probably have a blockage somewhere. Crack open the line from the filters at the injection pump and check for a good gravity flow of fuel.
You will have to crank the engine.
Check the filter at the pump inlet for any dirt or debris.
