How do you bleed air from a Yanmar Diesel fuel system?

Click to rate this post!
[Total: 0 Average: 0]

How to Bleed Air From a Yanmar Diesel Fuel System
  1. Turn the fuel control valve to the “On” position.
  2. Loosen the air bleed screw on the top of the fuel filter canister with a screwdriver.
  3. Loosen the fuel return pipe bolt with a wrench at the last injector before the pipe re-enters the fuel pump.
  4. Loosen the air vent screw at the injector pump with a screwdriver.

what causes airlock in diesel engine?

Air locks are caused by air leaking into the fuel delivery line or entering from the tank. Air locks are eliminated by turning the engine over for a time using the starter motor, or by bleeding the fuel system. Modern diesel injection systems have self-bleeding electric pumps which eliminate the air lock problem.

What is bleeding in engine?

Bleeding your fuel lines is like bleeding you’re brake lines. It is a term to describe the act of getting all the air out of the fuel line. In modern engines this is mostly done automatically but with older engines this is a much needed procedure.

How do you prime a diesel?

How to Prime a Diesel Engine Get a good mechanic’s repair manual. Look the fuel system over and check for any obvious air leaks. Fill your fuel filters with clean diesel and replace them. Take off the primer handle from the injector pump and pump it until you get fuel pressure on the system.

How do I know if my diesel injection pump is bad?

Symptoms of a Bad or Failing Diesel Injection Pump Engine may run roughly, or not at all. Hard starting. Engine misfires. Lack of power. Excessive smoke from the exhaust.