thomasnchy
Member
I know, diagnosing a sound being described from a guy on a forum is pretty far fetched! But, I'm willing to give it a shot. ... My 9000 was overheated by the operator earlier this summer (never blew out the radiator when mowing). Ever since then it has had a "ping" from the engine. It's not a compression sound, like a diesel should sound like. I've flushed the coolant, been through two oil changes, and replaced the water pump- it failed about 200 hours after the "noise" started, and checked all valve clearances. The tractor runs fine, no loss of power, no milky oil and the antifreeze looks new still. I ran my borescope to the intake valves that I could get to and the valve stems do have some carbon chunks on them, but nothing I wouldnt expect. The ping is most noticeable at idle, then the natural noise of the engine drowns it out.
My thinking is that I may have an injector failing. I should say that I hope it's an injector . After that I'm pulling the head, the tractor wont move untill next spring anyways.
My thinking is that I may have an injector failing. I should say that I hope it's an injector . After that I'm pulling the head, the tractor wont move untill next spring anyways.