Hello
I am wondering what could be wrong in my 8540 because it is making some kind of knocking noise when engine is cold. I tried to loosen each injector pipe nut one after another and when last cylinder's injector is out of the game noise disappears. So I took this injector to the mechanic who tested it and said it was OK. Then I tried to push (through injector hole) the piston to see if there is play, I noticed nothing. When engine warms up noise almost completely disappears. Engine starts up easily, runs smoothly right from the start and doesn't smoke. Noise is can be clearly heard at idle (and it is quite loud) but at higher rpms it disappears.
Any ideas what could be wrong?
Thanks
I am wondering what could be wrong in my 8540 because it is making some kind of knocking noise when engine is cold. I tried to loosen each injector pipe nut one after another and when last cylinder's injector is out of the game noise disappears. So I took this injector to the mechanic who tested it and said it was OK. Then I tried to push (through injector hole) the piston to see if there is play, I noticed nothing. When engine warms up noise almost completely disappears. Engine starts up easily, runs smoothly right from the start and doesn't smoke. Noise is can be clearly heard at idle (and it is quite loud) but at higher rpms it disappears.
Any ideas what could be wrong?
Thanks