New CK2610 : rough running/clanging engine, cold and hot

[mangler]

OK, admittedly I have not had a diesel in a while (last time was a 1987 diesel VW Jetta), but I swear this engine sounds like it wants to throw a rod when cold. It gets better when hot, but still rough sounding, with a lot of mechanical hammering noises. To be clear it is not missing or anything, just really noisy. Really hoping this is something loose on the tractor I am hearing, because it does not sound good.

Mind you, this is with 11hours on the clock, and a cold start is high 60s, so there are really no disclaimers here. Checked the oil, looks 3/4 full. Probably the world's cheapest oil though.

What viscosity are you running in your Kiotis? Manual says 10W30, 10W40 and 15W40 diesel rated all acceptable. Wondering if a synthetic 15W40 would quiet it down on "cold" starts. Does not get too cold here,garage kept and I have a bloc heater installed, so not really worried about winter starts. Sounds crazy but I can't wait for the first oil change. Probably going to push out the el cheapo grease pretty soon also.

 

[Industrial Toys]

Will changing the RPM not get rid of the noise? Usually if something is vibrating externally , you can simply change the resonating frequency a bit.

 

[mangler]

Will changing the RPM not get rid of the noise? Usually if something is vibrating externally , you can simply change the resonating frequency a bit.

I does, somewhat, some rpms are a bit smoother than others. None of them buttery smooth though.

 

[toukow]

Have you listened to other diesel tractors in this size range? They definitely don't sound like automotive diesels IMO. I've only previously owned a Ford 1700 with Shibura two cylinder, and that thing sounded like it was always ready to toss a rod, but that was its nature. I can post a video of mine with 40 hours starting up cold if it would be of help, not sure how accurate the sound reproduction would be though on a Iphone. Any way to stop by the dealer to hear another one, or even a different make? Just a thought.

I'm running 15W40 Rotella, as you said it's listed as acceptable, and it was on sale so I stocked up. Mine came with 10W30 per the dealer, and I think that is probably the better choice for the weather/temps in the Seattle area.

Toukow

 

[justman777]

A video of it running would help. I always thought tractors ran really rough, especially in lower RPMs.

 

[levi333]

The description of your 2610 sounds like mine. I'm at 16hrs and its still "clanky" at low rpm for the first few minutes. Seems to warm up and smooth out after awhile.

 

[MAD777]

Mine clanks pretty loud at low rpm's but it seems to be the nature of the beast. I've had mine out in zero degree weather and it still runs like a champ, albeit loudly.

 

[tiogajoe]

Yup. My 2610 is clanky. Have about 300 hrs on it and it is better than when it was new. I like to run it right at 2000 rpm's. That's where is seems to purr.

 

[MichiganIron]

Yup. My 2610 is clanky. Have about 300 hrs on it and it is better than when it was new. I like to run it right at 2000 rpm's. That's where is seems to purr.

The "clanky" noise is due to the indirect injection of the diesel. The CK2610 utilizes the mechanical indirect injection system like the other Tier III Diesels. What sounds like "clanking" is actually caused by the combustion that takes place in the pre-combustion chamber in the engine head. Gives it that old "Diesel" sound as the fuel combusts in the pre-combustion chamber. They do quiet down some when they warm up, but still "ping".

 

[toukow]

Great to have the explanation from Michigan Iron as to source of the sounds, I did not have a clue. I already had made a sound recording yesterday, so here it is for reference anyway. I filmed the exhaust as others had mentioned excessive smoke on start up of their new tractors. For what it's worth, Toukow

Sound Recording Cold Start Kioti CK2610HST - YouTube