Oil & Fuel jimna 284 tractor ran out of fuel how do I bleed the fuel lines

[JEFFWALLER16]

Hi

I am having problems getting my tractor to start after running out of fuel.....I can see that I need to bleed the lines....but can some give me step by step instructions (maybe with pictures) this is my first tractor and I and having problems

Thanks in advance
John

 

[Affordable]

Pump the primer on the fuel injector pump about 15-20 times it should fire up

Tommy
Affordable Tractor Sales
"Your Jinma Parts Superstore"
Home of compact Jinma, Foton, and Koyker Tractors and Parts, Wood Chippers, Backhoes - Affordable Tractor Sales Company

 

[JEFFWALLER16]

where is the primer on this tractor....I don't see a hand primer

 

[Affordable]

Look at the fuel injector pump, sitting in the seat its on the left hand side. The fuel line from the sediment bowl connects to the bottom of the primer. If it has a black plastic knob you just push it, if it has a serrated top you unscrew it and it will pop up.

Tommy
Affordable Tractor Sales
"Your Jinma Parts Superstore"
Home of compact Jinma, Foton, and Koyker Tractors and Parts, Wood Chippers, Backhoes - Affordable Tractor Sales Company

 

[RonMar]

1. Find the primer pump and unscrew/unstow it.
2. Take a 10MM wrench and loosen the nut on top of the fuel filter. This is an air bleed point.
3. Pump the primer pump untill only fuel comes out of the top of the fuel filter and then tighten the nut. There is a nut with a ring thru it on top of the injector pump, loosen that and pump some more untill only fuel comes out there and close it, then re-stow the primer pump.
4. find a wrench that fits the nut on the metal fuel lines where they connect to the injectors(17MM maybe?) and loosen all 3 injector fuel line nuts. It helps to stuff/wrap some rags under these loosened fittings to catch the diesel.
5. Push the throttle to full and crank the engine over for 15-20 seconds. If you have a compression release use it to make things easier on the starter and battery. This is easier with 2 people so you can watch the loosened fittings while cranking. First you will see bubbly fuel, then squirts of fuel without bubbles. IF you see solid fuel from the fittings, you can stop the crank earlier than 15-20 seconds.
6. Tighten the fittings, return the throttle to your normal starting position and try and start the engine. It should fire now...

The injectors are fired hydraulically from the pressure built by the injector pump. If there is too much air in the metal injector lines, it acts like a spring and absorbs the pump pressure, keeping the injector from popping. You have to release enough of this air so the fuel pressure in the injector line reaches the pop pressure of the injector so it will squirt fuel into the cylinder. It speeds the process to get the air out of the fuel filter and IP first so it dosn't re-fowl the injector lines... If it starts and runs for a bit then cylinders start to missfire, you missed some air and may have to re-bleed parts of the system.

Good Luck

 

[quicksandfarmer]

I haven't had to do all that when I ran out of fuel. I pump the primer pump until I hear fuel returning to the fuel tank. Then crank the starter, it starts within ten seconds.

 

[jbrukardt]

1. Find the primer pump and unscrew/unstow it.
2. Take a 10MM wrench and loosen the nut on top of the fuel filter. This is an air bleed point.
3. Pump the primer pump untill only fuel comes out of the top of the fuel filter and then tighten the nut. There is a nut with a ring thru it on top of the injector pump, loosen that and pump some more untill only fuel comes out there and close it, then re-stow the primer pump.
4. find a wrench that fits the nut on the metal fuel lines where they connect to the injectors(17MM maybe?) and loosen all 3 injector fuel line nuts. It helps to stuff/wrap some rags under these loosened fittings to catch the diesel.
5. Push the throttle to full and crank the engine over for 15-20 seconds. If you have a compression release use it to make things easier on the starter and battery. This is easier with 2 people so you can watch the loosened fittings while cranking. First you will see bubbly fuel, then squirts of fuel without bubbles. IF you see solid fuel from the fittings, you can stop the crank earlier than 15-20 seconds.
6. Tighten the fittings, return the throttle to your normal starting position and try and start the engine. It should fire now...

The injectors are fired hydraulically from the pressure built by the injector pump. If there is too much air in the metal injector lines, it acts like a spring and absorbs the pump pressure, keeping the injector from popping. You have to release enough of this air so the fuel pressure in the injector line reaches the pop pressure of the injector so it will squirt fuel into the cylinder. It speeds the process to get the air out of the fuel filter and IP first so it dosn't re-fowl the injector lines... If it starts and runs for a bit then cylinders start to missfire, you missed some air and may have to re-bleed parts of the system.

Good Luck

Hey Ron, i know this is an ancient post, but I wanted to say thank you for the really clear procedure, this got me restarted after my sediment bowl developed a o-ring leak and I got some air in the lines. Surprisingly well designed, the injector pump and fuel filter bleeds are super easy to access and the manual prime pump works perfectly. Got me started right back up in just a few minutes by myself.

The other procedures i saw had you loosening banjo bolts and having a second person crank/etc. Much more complex.

 

[j thomas]

Hi

I am having problems getting my tractor to start after running out of fuel.....I can see that I need to bleed the lines....but can some give me step by step instructions (maybe with pictures) this is my first tractor and I and having problems

Thanks in advance
John

hi imhaving the sme problemcan you help