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Topic: Power Tech - Kubota Engine repair (Read 802 times) previous topic - next topic

Power Tech - Kubota Engine repair

Looking for a service facility to check our Power Tech generator with Kubota diesel engine. Starts with white smoke then dies when under load. Traveling from Mackinaw City through Wisconsin towards Montana.

Any suggestions on service. Does not appear to be any service dealers in the norther US.


jack



Jack - Cynthia

Jan 2013
2003 U295 38'
3810 PBFS (6180)
2014 Jeep Sahara Unlimited

Re: Power Tech - Kubota Engine repair

Reply #1 –
In White Bear Lake MN, Cummins Coach Care.  I694 at US61.  A couple spots for hookups. 651 286 2038. 10% off with a Cummins Power Club card.  Call ahead.

http://now.cumminspower.com/coachcare

http://www.funroads.com/coachcare/whitebearlake/

There is one in Fargo as well.
Roger Engdahl and Susan Green
2001 U320 3610 #5879 (Home2) - 2014 Jeep Cherokee or 2018 F150
Hastings, MN

Re: Power Tech - Kubota Engine repair

Reply #2 –


Certified DOT Testing


Gary's Diesel Service has Certified DOT Inspectors for your vehicle inspections. They are available to answer any of your questions.

Gary's Diesel Service Parts Department has an inventory of parts for all of your own repair needs.

Call Gary's Diesel Service today for all of your diesel truck, RV, and trailer repair and parts needs at (763) 479-2103

Gary's Diesel Service
230 St. John Street, Loretto, MN 55357
(763) 479-2103
John & Carm Morales

"We travel not to go anywhere, but to just go.  We travel for travel's sake.  Our great desire is to move."

Re: Power Tech - Kubota Engine repair

Reply #3 –
Could be clogged fuel filter (Foretravel is known to install a primary behind gen box hidden on fuel line) or fuel line with crack letting air in.  Are you seeing this shut down after it has been running for a while, because it could be caused by failed glow plugs not getting cylinders hot enough and then when it starts, not letting it run a while to heat the cylinders so the fuel burns when injected.  How about clogged air cleaner.  Diesels are pretty simple, just give them air and fuel and they are happy to please.  Are you low on diesel in your main tank.
Leaking fuel line can be diagnosed with a can of diesel and a temp hose up to fuel pump.

Re: Power Tech - Kubota Engine repair

Reply #4 –
First check all fluids- including coolant.  If you are low on coolant it will shut down- safety device to prevent you from burning up the engine.

Hope you get it worked out and continue on your trip.

 ^.^d
Ted & Karen
2001 U270 36' - sold after 12 years full timing

Re: Power Tech - Kubota Engine repair

Reply #5 –
I would concentrate on fuel line sucking air. As posted above run a fuel line into a container of fuel. I had the same symptom's when I bought my coach and new fuel line solved the problem.
1999 40 ft. U-320 wtfe build 5563 Chuck & Lynda's "Rollin' Inn"  2030 watts solar
prev. mh's 71 GMC 5 yrs. 73 Pace Setter 1 yr. 78 Vogue 5 yrs 81 FTX 40ft all electric 18 yrs. 1996 Monaco Signature 3 yrs.
2014 Grand Cherokee Overland
Dream as if you will live forever. Live as if you will die today.  James Dean

Re: Power Tech - Kubota Engine repair

Reply #6 –
Generator starts but puts out white smoke and runs until transfer switch puts it under a load. RPMs at startup sounds like it is idling as opposed to running at a higher RPM. Smoke is actually a dark white if that makes sense.

Air filter is new and looked ok.  Two fuel filters changed in the last 2-3 months at Foretravel.


jack
Jack - Cynthia

Jan 2013
2003 U295 38'
3810 PBFS (6180)
2014 Jeep Sahara Unlimited

Re: Power Tech - Kubota Engine repair

Reply #7 –
How much fuel is in the tank...will not run if too low
may starve for fuel
Coolant???
John and Stacey Smith
Motorcade NO: 11973
1997 U295 CSGI 40'..Build No. 5036     
920 Watts on the roof..CAT Power w/fuel Inj. Programmer
2021 GMC Sierra AT4 1500
EX..2015 Jeep Wrangler Sahara
Ex 1990 U280 RSAI 36'..Build No. 3638

Re: Power Tech - Kubota Engine repair

Reply #8 –
cynjac, We had similar symptoms with ours and the cause was a restricted air intake. It sucked insulating material over air intake. FOT installed an elbow on intake to prevent happening again.  Good luck!
Bill and Joyce, The House2 and Dashboard Pig III
2000 U320 4210 CAI (The House2)
Build # 5733
2019 F150 King Ranch FX4

Re: Power Tech - Kubota Engine repair

Reply #9 –
Like craneman, my kubota was smoking and cutting out, new fuel line and runs like new! Also I found a sensor leaking on the back of engine where its hard to see. Replaced it and no leaks. It might be worth looking back there to see.
'The strength of the effort is the measure of the result'
1995 U320SE
40'
#4740
#17648

Re: Power Tech - Kubota Engine repair

Reply #10 –
Currently in Hancock, Wi. for a few days. Plan on looking at the fuel line in the next couple of days. Air intake seems to be ok as far as I can tell without pulling generator out.

Will post when I get that accomplished.



jack
Jack - Cynthia

Jan 2013
2003 U295 38'
3810 PBFS (6180)
2014 Jeep Sahara Unlimited

Re: Power Tech - Kubota Engine repair

Reply #11 –
Fuel tank is over half full.


jack
Jack - Cynthia

Jan 2013
2003 U295 38'
3810 PBFS (6180)
2014 Jeep Sahara Unlimited

Re: Power Tech - Kubota Engine repair

Reply #12 –
Make sure the electric fuel pump is putting out fuel.
Steve DeLange
2005 U320T 40'
Pearland, Texas

Re: Power Tech - Kubota Engine repair

Reply #13 –
Last week, Propman called me with a problem, rough idle, and low less than 90 volts output, and smoke.  He found his insulation had fallen down, and was blocking the intake snorkel on the back rear side of the generator.  Once removed, to be replace after his trip, it ran fine.

His coach is also a 2003.
Dave Cobb
Buckhorn Lake Resort The Club, #6202, Kerrville TX
check the map.  I do rent it out when I am traveling!
2001, U320, 36' #5887, in Kerrville, FT Club #17006, (7/23 to present)
2024 Jeep Grand Cherokee L, Summit, white
EX: 98 U295, 36' #5219, (mid door), (4/13-10/23)
EX: 93 U225, 36' (4/11 to 4/13)

Re: Power Tech - Kubota Engine repair

Reply #14 –
Been under the weather the last couple of days.

Can I get to the intake snorkel without pulling the generator?

I pulled the insulation out from the top of the generator. It was mostly on the top of the motor. I could feel the intake line but not enough to get the the actual air intake point.

The fuel line to the fuel filter in front of front axle visually looked ok around the filter connections. Does the fuel line from the tank come off the top with a drop tube or from the 1/4 mark? Does it share a feed line with an aquahot?

Also, I have been following the dynagen thread in a more recent thread.


jack
Jack - Cynthia

Jan 2013
2003 U295 38'
3810 PBFS (6180)
2014 Jeep Sahara Unlimited

Re: Power Tech - Kubota Engine repair

Reply #15 –
Quote from: cynjac –
Does the fuel line from the tank come off the top with a drop tube?
Does it share a feed line with an aquahot?

Yes

On our coach ('97) No they have separate pick up tubes.

Pamela & Mike
Pamela & Mike 97 U 320

"It's not what happens to you, but how you react to it that matters."

Re: Power Tech - Kubota Engine repair

Reply #16 –
"Can I get to the intake snorkel without pulling the generator?" Yes you should be able to see it at the left back corner.

I had the same issue "white smoke" is starvation of air
"Last week, Propman called me with a problem, rough idle, and low less than 90 volts output, and smoke.  He found his insulation had fallen down, and was blocking the intake snorkel on the back rear side of the generator.  Once removed, to be replace after his trip, it ran fine.

His coach is also a 2003."


Check to make sure it can bread without insulation is blocking it.
Former 2003 GV U295 (6230) (2015 - 2025)
Former 94 GV U225 (2013-2016)