DieselTalk

DieselEngineTrader's FREE Diesel Engine Forums

new topic search Categories login View Kubota Engines

CATEGORY LISTINGS > KUBOTA > Engine Idle [ REFRESH ]
Thread Title:

Engine Idle


Created On Thursday November 01, 2007 11:40 Diesel Talk
Diesel Talk Forum

steinerguy
Diesel Talk Forum
Posts: 4
Joined: Nov 2007

Note Thursday November 01, 2007 11:40 View thread in raw text format
Diesel Talk
I have a Steiner tractor with a 3 cylinder Kubota diesel. The engine was running full throttle when it idled to 1/4 throttle all at once. It runs smooth, but will not advance past 1/4 throttle. The linkage is fine and nothing appears out of adjustment. The oil level is normal and the filters appear normal as well. Any ideas?

Thanks.

Steiner Guy
Diesel Talk Forum
Reply Diesel Talk Forum Quote Diesel Talk Top Diesel Talk Forum Bottom Diesel Talk
Diesel Talk Forum
Diesel Talk Forum

Snafoow
Diesel Talk Forum
Posts: 79
Joined: Mar 2006

Note Thursday November 01, 2007 19:23 View thread in raw text format
Diesel Talk
Check Fuel supply pressure ?

Diesel Talk Forum
Reply Diesel Talk Forum Quote Diesel Talk Top Diesel Talk Forum Bottom Diesel Talk
Diesel Talk Forum
Diesel Talk Forum

steinerguy
Diesel Talk Forum
Posts: 4
Joined: Nov 2007

Note Wednesday November 07, 2007 14:24 View thread in raw text format
Diesel Talk
I changed the fuel filters, but it did not make a difference. I don't have a means of checking the fuel pressure. Any other thoughts?

Steinerguy
Diesel Talk Forum
Reply Diesel Talk Forum Quote Diesel Talk Top Diesel Talk Forum Bottom Diesel Talk
Diesel Talk Forum
Diesel Talk Forum

Snafoow
Diesel Talk Forum
Posts: 79
Joined: Mar 2006

Note Thursday November 08, 2007 21:49 View thread in raw text format
Diesel Talk
Not familiar with the engine but I would make sure the fuel pump is making it to the full fuel position.

You should be able to disconnect the throttle linkage, at the throttle lever, which is on the fuel injection pump, and manually move the lever to full fuel position and see if the engine revs up.

It is also possible for this fuel pump lever to loosen and slip on the throttle shaft and give you reduced amount of throttle.

Is there any pto controls that limit engine speed on this tractor?
Diesel Talk Forum
Reply Diesel Talk Forum Quote Diesel Talk Top Diesel Talk Forum Bottom Diesel Talk
Diesel Talk Forum
Diesel Talk Forum

steinerguy
Diesel Talk Forum
Posts: 4
Joined: Nov 2007

Note Friday November 09, 2007 16:36 View thread in raw text format
Diesel Talk
The pump throttle linkage maxs at the factory throttle stop. I will remove the nut from the pivot linkage and see if it has slipped, as you suggested. I put a wrench to it at it was tight, but it still may have slipped.

Thanks

steiner guy
Diesel Talk Forum
Reply Diesel Talk Forum Quote Diesel Talk Top Diesel Talk Forum Bottom Diesel Talk
Diesel Talk Forum
Diesel Talk Forum

Snafoow
Diesel Talk Forum
Posts: 79
Joined: Mar 2006

Note Friday November 09, 2007 17:50 View thread in raw text format
Diesel Talk
Also, make sure the shutdown lever has its full travel and is reaching its full on position.
Diesel Talk Forum
Reply Diesel Talk Forum Quote Diesel Talk Top Diesel Talk Forum Bottom Diesel Talk
Diesel Talk Forum
Diesel Talk Forum

steinerguy
Diesel Talk Forum
Posts: 4
Joined: Nov 2007

Note Monday November 12, 2007 19:51 View thread in raw text format
Diesel Talk
I removed the lock nuts from the engine throttle shaft and the locater pin was positioned correctly on the throttle shaft. Next, I cut the safety wire from the factory stops and adjusted the set screws to max throttle position. The engine did rev higher, but still less than 1/2 throttle. Pressurizing the fuel tank made no difference in engine rpms. Neither did removing the air cleaner system.

No PTO on tractor. Fuel shut off is completely open.

I'm still perplexed.

Steiner Guy
Diesel Talk Forum
Reply Diesel Talk Forum Quote Diesel Talk Top Diesel Talk Forum Bottom Diesel Talk
Diesel Talk Forum
Diesel Talk Forum

stampsrobbo
Diesel Talk Forum
Posts: 3
Joined: Jan 2009

Note Thursday January 29, 2009 13:37 View thread in raw text format
Diesel Talk
don't know if you have your engine going yet, but it sound like the governor spring came unhook, if you remove your throttle control plate the spring will be under it

-------------------------
 Robie W Morris
Diesel Talk Forum
Reply Diesel Talk Forum Quote Diesel Talk Top Diesel Talk Forum Bottom Diesel Talk
Diesel Talk Forum
Diesel Talk Forum

kyhamoge
Diesel Talk Forum
Posts: 2
Joined: Jan 2013

Note Friday January 11, 2013 10:21 View thread in raw text format
Diesel Talk
Hi Steiner Guy,

I came across this discussion and am very curious to know if you were able to resolve your problem with low idle?

I am experiencing the exact same problem with my Kubota diesel engine in my Bobcat skid steer.

Like you, I checked fuel lines, replaced filters, checked throttle linkage, etc. -- no luck confused

Upon the advice of others smarter than myself, I will attempt to check/replace governor springs.

Any feedback would be most helpful!

Thanks

-------------------------
 Daniel M. Brett
Diesel Talk Forum
Reply Diesel Talk Forum Quote Diesel Talk Top Diesel Talk Forum Bottom Diesel Talk
Diesel Talk Forum
CATEGORY LISTINGS > KUBOTA [ REFRESH ]
Diesel Sales
Big Bear Engine Company
Luoyang Diron Parts Trading Co.,Ltd
Young & Sons Inc.
Advertize on Diesel Engine Trader

Customer Testimonials

Newsletter

Subscribe to our mailing list to get all the latest DET news.as well as daily or weekly notifications of new engines, gensets and spare parts listings.

'Had a Toyota motor for sale in our city paper for 2 years without success, but on DieselEngineTrader.com I got a quick response and it was sold.. Thanks for your help. I'll use it again.'

Glenn Poidinger, Merik Workshops, Canada

'We sold a Deutz 6 cylinder to a new customer in Illinois within weeks of listing! Because the customer contacted us directly from the start, the deal went very smoothly.'

Leon Weller, Diesel Power Supply Co, Texas, USA

'We love your site! Got a customer in Germany through our ads in DieselEngineTrader.com and made a $130k sale to him for a CAT C32 engine!'

Grant Tremelling, Northern Equipment & Machine, Idaho, USA

Copyright Diesel Engine Trader 2015