How do you bleed air out of a 6.5 diesel?
In this regard, how do you get rid of an airlock in a diesel engine?
To start the process, locate the manual fuel pump primer on the engine. This may be a small lever you pump up and down, or a plunger-type you push in. Open up the bleed screw on top of the secondary fuel filter, and start pumping the primer pump. You will likely see both fuel and bubbles coming out of the bleed screw.
Similarly, you may ask, what happens if you get air in your fuel line?
Fuel lines containing air can cause the engine to not run properly. Generally, air is introduced to the fuel lines when there is a leak or during fuel draining for equipment storage. Very little mechanical knowledge is required when bleeding fuel lines.
If there are no air leak symptoms, but bubbles are present in a sight tube at the fuel lift pump inlet, they are most likely vapor bubbles. All diesel fuel has some level of entrained air caused by the natural splashing that occurs in the fuel tank during normal vehicle or equipment operation.