Tractor Repair: kabota b5200-l4hp, nut bolt, air bubbles

Question
when parked last fall it ran good, tried to start it this spring, and will not start, exhaust puffs on exhaust when trying to start. cranks good, battery fine, has fuel,will not start with ether. Thanking in advance,
Roland Bright

Answer
Hi Roland.
Its possible that the fuel system has dried out or there is a small leak in the pipe work and this has caused an air lock some were between the tank and the injectors.
Suppose the fuel is turned on ?
Any way on the injector pump there will be a small nut that will need loosening See manual if your not sure.( called the bleed screw)
Do this and crank engine again watch for a small amount of fuel coming out round the nut,if this works tighten this nut/bolt again ounce fuel is flowing freely.
Now try to start engine again in normal way.

If this does not work try the idea again but this time loosen the nut at the point were the fuel pipe connects to the injector ( not the injector its self just loosen the fuel pipe union 1/2 a turn turn engine over again and watch for a small amount of fuel coming out freely without any air bubbles in it -- ounce this is ok re-tighton nut at injector and start engine.
Martin