450B 4219 Engine Rebuild

[Shadow717]

First and foremost thank you for the information I have received here.

I have done a complete out of frame rebuild on this engine. got her to fire tonight and she ran great for about 5 seconds and then died. I ran it out of machine with a 12 volt fuel pump plumbed direct to injector pump. I had tested the injectors earlier and had 2 that worked as should and 2 that were probably at about 90%.

i torqued injector hold down clips to manual specs. I have tightened the fuel line to injector as tight as I can using 2 wrenches. I have all of the fuel return lines connected and running back to the fuel can.

I am still getting significant fuel leakage at what I believe the fuel line to injector connection.

Question do the injectors require gas teflon tape or sealant? Is the 12 volt pump pushing too much fuel ( I do not believe this to be the issue as the injector pump should regulate that

Any other thoughts? The service manual has nothing on injectors unless I missed it.

link to engine running is here

https://fb.watch/g4uwjaF94N/

Thank you very much!

[Clark]

Be sure your 12 volt pump is pumping. Many are not able to lift fuel only push fuel. You will need tp bleed the whole system of air.

[Shadow717]

Thank you for your help.

I have bled the whole system to my knowledge.

It seems I am getting fuel leakage at injector and fuel line connections. I have them as tight as I can get them.