Gdayteam, thanks for your time in reading this.
was blowing a lot of white smoke a few weeks back and I pulled the injectors and sent them away to get refurbished.
Yesterday I recieved my cleaned up injectors back with new nozzles on them.
I installed them this morning and started the engine
up. It went fine, started easily and idled smoothly for about 10 min there was some white smoke but nowhere near as much as previously.
After 10min I noticed the revs were not steady anymore (by ear, no tacho) they had a surging rhythm.
I was checking the injector seat bolts when suddenly the revs starting increasing quickly I pulled the stop lever to shut off the fuel
at the injector pump
and it didn't stop the engine was now revving very high.
I knocked off the air cleaner and blocked the intake with a piece of wood and the revs came back down to a normal range but the engine still wouldn't stop.
I undid all 3 injector lines while holding the wood over the intake and it still wouldn't stop.
There is a breather from the crankcase to the air intake and I was in the process of undoing this to block it when the engine finally stopped. It ran for 3-4minutes after I disconnected injector lines.
It stopped like it normally would not seized or anything making major noise
There was oil
coming out of the air cleaner though.
How do I figure out the cause?
What should I check for damage?
My rings haven't been showing sign of wear, ie no black/blue smoke.
I can only think it has something to do with the recent injector replacement. But then it ran for 3-4 min after I disconnected the injector pipes. So must have been getting 'fuel' from the crankcase breather.
Any and all help very much appreciated.