Just Got a new 4220i (kukje 42 hp) 4 cyl.) 17 hours now.
Starts fine runs good, however between 1300 and 2100 rpm the engine sounds like it has a loose bolt rattling around in the engine. Some might call it clatter, but it only randomly happens like a tick/ping/misfire every 3 to 5 seconds. It's not a real loud rattle and probably can't be noticed unless you are standing near the tractor. The strange thing is that at idle and up to 1200 rpm it purrs like a kitten and if I boost the rpm to 2200 or higher it sounds fine. There is no loss of power at any rpm even when it making the rattling noise. I hate to make any changes to the engine or play with the injectors as the warranty should cover any/all problems at this point and I don't consider myself much of a diesel mechanic. If one of the injectors is dirty or clogged, is there a diesel fuel additive to clean the injector? Maybe the tractor came with bad/old fuel? Maybe (If I'm Lucky) it will go away on it's own?
Could I have damaged something by working it too hard during break in?
Any ideas?
Starts fine runs good, however between 1300 and 2100 rpm the engine sounds like it has a loose bolt rattling around in the engine. Some might call it clatter, but it only randomly happens like a tick/ping/misfire every 3 to 5 seconds. It's not a real loud rattle and probably can't be noticed unless you are standing near the tractor. The strange thing is that at idle and up to 1200 rpm it purrs like a kitten and if I boost the rpm to 2200 or higher it sounds fine. There is no loss of power at any rpm even when it making the rattling noise. I hate to make any changes to the engine or play with the injectors as the warranty should cover any/all problems at this point and I don't consider myself much of a diesel mechanic. If one of the injectors is dirty or clogged, is there a diesel fuel additive to clean the injector? Maybe the tractor came with bad/old fuel? Maybe (If I'm Lucky) it will go away on it's own?
Could I have damaged something by working it too hard during break in?
Any ideas?