Air in new injector

[JPD_]

Hey guys, it's probably a common problem but I cannot find the proper Information for my specific case.

John deere 160clc

I had a leaking injector that I replaced and it worked Allright for about 5h. Then the excavator started blowing white smoke and didn't want to start.

I realized the new Injector was spurting a lot of air and I can't never bleed it, always a bunch of air.

I can't start the excavator just fine if I unscrew this specific injector so that the air can get out. (Only works with this one). Then I can rescrew it, but the excavator runs rough with smoke(white, maybe blueish).

I don't see what else could have broken other than the new injector.

I want to switch its place with another one to test of its the line or the injector, but I'm waiting to get the job done in case I break a seal doing so.

Meanwhile i'm reaching out to you to see if you already encountered something like this. Am I on the right track ?

Regards

JP

 

[thepumpguysc]

It’s very possible that the injector is stuck open and your getting compression blowing back up thru the injector..

Another problem is with that inj pump.. The “DE” pump has a broken spring problem.. & it produces a bunch of air, BUT it won’t be just 1 cylinder..
Have u loosened ALL the lines
AT THE INJECTORS and had someone crank the engine to see if it’s just on 1 cyl or ALL of them.??
If indeed it’s only on 1 cyl, it’s probably just that 1 injector..
Good luck

 

[JPD_]

@thepumthanks, yes i tried the injectors when someone crank but also as the excavator was running. Only this injector shoot more air then fuel. The rest a clean fuel.

Thanks for taking the time I'm glad to see I'm on the right path.