I ended up swapping my injector pump for a known good pump and now the engine runs great. I went on to completely dismantle the original pump, and lapped the mating surfaces with diamond lapping compound. That pump works now too. Thanks for the encouragement.
@@ryy597 I had two engines (in light towers). One ran great, the other one barely ran and smoked alot. I swapped fuel pumps, no difference. Swapped filters, fuel and air, no difference, finally, I swapped the injector pumps and the problem moved from one engine to the other.
Great description of the diesel motor and how it works . Just a little too simple for the average home owner . You are very skilled at mechanical work. Thanks
I had to replace the injection pump on my bobcat 463. Same engine as here. A rebuilt pump cost about $350. Bobcat wanted over $3,000 to do the job. Took me about 2 hours
I have a F2880 mower with the D1105 diesel and it has started the blueish smoke and low power. Thought it might be injectors but this seams more accurate. I am no way a mechanic, so your video here has helped me.
I had a power loss problem I found number 3 cylinder (that's the cylinder if your standing in front of the engine looking toward the rear of the engine), was dead, and also had a loud clatter noise in the rear of the engine. I pulled the injector out of number 3 cylinder and done a compression test which resulted in a real low compression reading. Just for the fun of it I took a piece of bailing wire about a foot long and lowered it into the cylinder until it touched the top of the piston then I reached around to the front of the engine and grabbed the pulley and turned the pulley back and forth and found I had to turn the pulley as much as two inches in either direction to get any response out of the piston. Immediately I knew where the clattering was coming from and the cause of the misfire and low compression. So I pulled the oil pan off and found the rod bearing had spun and the rod itself was bent in the number 3 cylinder. So at this time I'm in the middle of rebuilding it. Just wanted to share my story on how I diagnosed my engine problems.
Nice video. Wish I found this prior to diving into my pump. Similar kubota 3 cylinder in a jacobson turfcat. Hadn't ran in 10+ years, water in the fuel. I pulled the injector pump out. I was difficult to get out because the throttle slider was frozen and it ended up breaking on the gears that rotates the plunger inside. (slightly older design to yours). Called kubota, they tell me that dont sell parts for the pump but they would end up sending it to a diesel shop like D&W. These guys were great. Similar problem with finding parts, I send in some pictures of the pump and have the parts the next day. Got the thing running after a bit of time. Wish there were some videos of pump assembly, trade secrets i believe. Hi from Alden
The injection timing is set by adding or subtracting the shims under the injection pump. This Kubota has fixed timing like most lawnmower gas engines. A lot of automotive diesel injection pumps have variable injection timing. I installed a Kubota 905 diesel in a Geo Metro and it had driveability issues because of the fixed injection timing.
I was thinking about doing the same, 3cyl kubota in a geo , did you ever get it right? How is the power? Could a turbo be added? Milage? Thanks would appreciate some info, did you build a adapter?
@@redfuel6bt Power...terrible. Going from 54 hp to 24 hp makes it a flat land vehicle only. I forgot about the car long ago but still have it. It's not a simple swap at all. Nothing fits. I built the adapter, modified a Suzuki Swift flywheel, clutch, starter, and had to make a vacuum pump to work the brakes. The oil pan hangs low and needs mods to provide clearance. The worst part is that the oil filter is exactly in the way of the right axle. A complex adapter needed to be made to switch it over to the front side of the engine. The fixed timing injection pump makes driveability poor. The governor had to be modified to hit 3600 rpm from fixed 1800. When you were ready to shift and hit 3600, the power cut back completely. But it got around 70mpg during the week I tested it. The registration expired and California would not renew it without the original engine. I have a turbo but it still sits on a shelf. I used to build random things like that but nearing age 70, no longer have the interest. I build solar generators for fun now.
@@redfuel6bt Here it is....built 14 years ago! ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-hnAOF1bOSB8.html Here's another random video from 2016 when someone bet me it wouldn't start. ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-BhBKLahX6_0.html
@@redfuel6bt Since you clearly like Cummins and off road.... here's my boat after converting it from a slow inboard to a stern drive with Chevy 6.5 turbo diesel. I still have the boat in storage and doubt that I'll ever run it again. Boats were fun for years but I'm over it. Note the air horn dongle. It once hung from a friend's Dodge Cummins before he rolled it 3 or 4 times. The old Perkins 47 horsepower diesel that came out of the boat went into her old wooden 28 foot Tollycraft cabin cruiser...very slow, 8mph, but got us around the NorCal Delta at 1.25 gallons per hour. That's cheap boating. ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-cDyQ_VeZKx0.html
Interesting video Pete. I've acquired an engine in the same range to rebuild in part for entertainment and also to do an engine rebuild video for my channel (and have found the workshop manuals online). Just a point of note that the D902 is one out of a series of similar engines, including the one I bought (a D662), D722 and the D902. They seem to also use the same pumps on engines like the Perkins K103-07 3 cylinder diesel (Which I've also bought). Presumably the same issue would apply to those and indeed all similar diesels.
I would recommend always adjusting the valve lash if you have removed the head or rocker assembly even if you keep the push rods in the same locations, it never a good idea to assume the valve lash is correct.
@@justinlafon1953 just for anyone wandering along after, you can buy the pump rebuild kits on ebay now, search for "Overhaul repair kit for 3 cylinder NP-PFR3KD50, NP-PFR3KD55, NP-PFR3KX55 " - I just bought one ready to sort my D1105 out for the same issue.
thank you I have a D1105-e but I think this would help bc they are very similar engines and the injection pumps look and operate very similarly so thank you
Your video is wonderful. I found it by accident and it was very well done. I have a Kubota RTV and I have questions about the hydrostatic transmission if you work on them I would love to see a video on it.
Diesel engines are considered industrial. I would have rebuilt the pump, but the part numbers are not made available and parts are impossible to find without being a distributor. It's kind of a huge money racket.
Also the separate pumps have to be calibrated so that they pump the same amount of fuel per stroke, and without a service manual for the PUMP it is very difficult to get it right. Best to have it overhauled by a shop that specializes in fuel pumps, or do as Pete did and just buy a new one.
I had this same issue with my pump. I took the pump to my local tractor supply. they swapped it from a rebuild they had on the shelf. $125 bucks after core. I was out the door 15 min, back to mowing in about an hour.
Petes Garage i wouldnt have trusted just replacing the 1 broken spring either, highly possible and probable that the other two springs would go bad too, so i agree you made the right desicion in putting a whole new pump on
For ref the pumps / heads are shimmed for engagement...we used to produce these under licence as a Perkins compact engine and the engagement depth varied from engine to engine...you got luck here but could have easy over fuelled
i have an f2000 with a d950 motor. i recently had similar issues with smoke and diminished power. just to see what would happen i added sea foam and hoped it was a stuck injector. 15 mins later it returned to normal power with no smoke. i got lucky but more times than not start with the simple things first. nice video thx.
You'd have to do the valve adjustment anyway, the head gasket wouldn't necessarily be exactly the same height and will affect the distance from the camshaft to the rockers
Hay Pete I have a Bx 2350 and on my number one injector line I cracked it loose to see if I was getting fuel so I tiended it back and now it won't stop leaking it drips
Pete: Thank you so VERY MUCH. I have a grey market YANMAR tractor. Model 2820. I have searched high & low for exactly the info you provided in this video. I have learned so much about the care and feeding of the small 2-3 cylinder diesel engines while attempting to get my YANMAR running properly. Your video may be the final piece in the puzzle. Again a HUGE THANK YOU, for the info regarding the removal and breakdown of the fuel injection pump. I have removed and cleaned the injectors, bleed the fuel system, run some "Dextron ATF" through the system, and still had one cylinder when running the engine would just push BLACK SMOKE out the stack. Now I need to find a source for the large spring you show in the video that sits inside the plunger. Hopefully I can find this spring so I don't have to buy a new pump. Any info regarding where these springs might be sourced would be GREATLY APPRECIATED.
Bonjour, merci pour l'astuce 😉 Je viens de récupérer un moteur Kubota D950, qui ne fonctionne plus avec plus de 6400 heures. Le moteur n'est pas bloqué, je vais devoir déculasser pour connaître la panne. Encore merci pour vos astuces 😉
I've looked at those Mercedes engines plenty. There is nowhere even close to the aftermarket that there is for VW TDIs. Plus, in my engine compartment, that means lots of cutting and welding and custom fabbing.
DO NOT CHECK THE FUEL PUMP FIRST!!!!!!!! This symptom can be caused by something as simple as a plugged fuel pickup, i stopped someone from replacing a fuel pump and replaced filter and lines first, found the down tube in the fuel tank had a peice of plastic bag stuck in the fuel line, suction in the fuel lines was causing air to get into the fuel lines before the injection pump. 10 minutes and $10 in parts (fuel lines and filter) and the machine runs like new.
You are absolutely correct. Before doing this video the fuel filters were change, tank drained, and lines cleaned. I did find a huge ball of plastic blocking the pickup. But I think that is based on what the engine is put it,
I have an issue with an exmark that has this issue. Someone rubuilt the blown motor and it has never started since ill be running some tests tomorrow. The theory there was more than likely a fuel issue before and someone tried to start it with ether and blew a rod out-of the side of the block. I just hope the guy rebuilt it correctly.
@@PetesGarage - Any chance you still have that part number? I haven't pulled my pump yet to confirm it, but my bx2200 is smoking and down on power as of today, I just replaced my 3rd hydraulic hose in a week and now it's not running right.
I was watching your video and thanks for doing it. My G4200 started with a leak on the manifold for the injection pump. I replaced the gasket but still had the same leak plus picked up a leak on one of the injectors. I replaced the two "O" rings on the injector and installed another gasket. I still have the leak, it loks like it might be oil with gas coming out. The motor tries to start a little but never does run plus the leak comes out at the gasket. Is there a chance that I am pressurizing the motor due to an injection pump leak and forcing the oil-gas out? Hopefully you will have the time to assist me.
We have the exact same machine SCAG Turf Tiger II with Kubota. It blew the head gasket once and even cracked the top due to overheating. Now maybe it has done it agian. It keeps overheating almost immidiately. What can be wrong?
Great video.. Ive got a 12 valve, but unsure if I want a kubota diesel. How many hours were on this engine and do you think its a good choice for a residential yard engine?
Hi, thanks for detailed video. I had a problem in my gen, when I started it go to full acceleration and I had to cut the fuel for turn off. Could be the rack governor loose in any way and stuck in high RPM? Any advice? Thanks. Is a Cummins onan 7500 with kubota 3 cylinder engine
Hello, I have a kubota D902-6E3198 carpet cleaning engine and I am getting a lot of black smoke and the power of the engine drops when I accelerate it and we putit to work, what do you recomend I do?
I have a similar issue with my mahindra 2015HST. I’ve replaced the injectors without improvements. Next is the solenoid fuel pump, which I’m going today. I will also clean the fuel tank when I do that. If it doesn’t change anything though, I will break into the injection pump and change the head gasket while I’m at it. My only fear is valve clearance. I know nothing about it and I’m worried about screwing it up when I reassemble it. Do you have any advice here?
Pete I have the Kubota D722 it overheated it’s in a lawnmower and it seems to be losing radiator fluid through the exhaust but you can’t see it. It’s just a black sooty smoke. Should I order a gasket and do what you did pull the injector thing and how do I find out what torque to set the head bolts back at?
Hi, I have a question. I recently cracked my head and had it replaced along with the injectors. But it still blows smoke on first crank and under load???
Great job!! Do I need to re time the pump after reinstalling? Because I'm working on one after some one tried working on it and I'm not seeing a timing mark.
with a Parts book you can find Anything 😐 and you call the Thing a lawnmower with a 3 cylinder diesel that can Drag Pickup truck with 4 exploded tires yeah these tractors are Torquay sometimes in Low Gear
Great video Pete, Just purchased a Kubota X 1140 Diesel and was curios if its normal that it moderately smells like too much diesel coming from the exhaust? It also blows a little smoke when I initially start it up. I have a Kubota SVL 75 and does not smell as much burning diesel as the RTV. Possibly the Kubota SVL 75 may have more emission control components than the RTV?
Hi Mr. Mechanic: I have a kubota BX2370with a small three cylinder diesel. I have changed the filter -fuel pump and it still bogs down under a small load. Is there any advice that you may have??
Good chance your fuel jelled, you can go to a auto parts store and buy a can of fluid that immediately breaks this up. Costs about $30 not cheap but better than taking the tank off, also change your fuel filters. Kubota users two of them
Pete, thx for the video..when I reinstall the pump it doesn't sit flush,, seems to be hovering and I have to push down to rescrew the Allen bolts. Is this normal?
I know this video is 3 years old but here goes. I removed the injection pump and everything looked fine. I reinstalled, but I'm not sure if i lined up the pin into the shuttle. I had the injectors tested and 2 were bad and 1 barley working. So i changed them out and started it up. The engine is now making a clicking noise i didn't hear before, and smoking more than before. Could i just take the injection pump off and try to reset, or will the timing be off now?
Denso IC regulator 16678-64014 12V 45A 10021-4732 That's my Kubota D902 alternator, but because i have electric A/C what need 50 A the original alternator is too small. Do you know can i add bigger alternator to Kubota? Something 80 ampere one.
Pete, I have a B8200 and my pushrods bent and took the front end apart to find the cam, indler, and crank gears are chipped. What would cause this to happen. Thanks, John
