Fast Idle Speed
- Thread starter kuboman
- Start date
- Views: 11397
davesl708
Elite Member
Diesel engines produce more pollution at low rpms. If you tractor has Tier 3 or 4 the higher rpms keeps the system cleaner.
Is that the only reason or is there some mechanical reason for it? I would like to slow it down some if I can get a service man to do it.
davesl708
Elite Member
Popular belief is diesels can idle at low rpm for long times without problem. That is not correct. Low rpms allows fuel to cool the chamber and increase fuel contamination of the oil. Idling the engine is good for cooling it down after working but not recommended for long periods.
As to adjusting the speed that may put it out of compliance for emission control. I would talk with the dealer before making changes.
RalphVa
Super Member
- Joined
- Dec 19, 2003
- Messages
- 7,885
- Location
- Charlottesville, VA, USA
- Tractor
- JD 2025R, previously Gravely 5650 & JD 4010 & JD 1025R
It's 1300 on my 2025R. It was an awful 1650 on my buggy 1025R. Tried to reduce it on the 1025 but only got it down to about 1400-1500. Wasn't as easy as it was on my 4010. Haven't tried it yet on my 2025.
Why oh why does John Deere/Yanmar need the higher idle speed; whereas, Kubota does not. I tested a Kubota B2301. It idled at 1000.
Ralph
Why oh why does John Deere/Yanmar need the higher idle speed; whereas, Kubota does not. I tested a Kubota B2301. It idled at 1000.
Ralph
I understand the low idling and always bump up idle speed when I do idle but hate the idea of shutting down a racing engine. This is an electronic engine so the dealer will have to do it if he can or will.
davesl708
Elite Member
The EPA laws may not allow the dealer to change it.