Kubota Engine Knock 4310: Kubota Review  -- Kubota Tractors Discussion Forum and Review Kubota Engine Knock 4310: Kubota Review -- Kubota Tractors Discussion Forum

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 08-01-2005, 15:41 Post: 114194
fnemo1



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 Kubota Engine Knock 4310

need some help,at work i have a 4310 kubota,after running it for some time the engine starts to knock and blows black smoke,they use it to blow leaves,i changed the fuel and air filters and changed the oil, any thoughts will be very helpfull, thanks






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 08-01-2005, 18:46 Post: 114200
oneace

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 Kubota Engine Knock 4310

Sound like the engine might be ready to puke out.






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 08-01-2005, 18:46 Post: 114202
Art White



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 Kubota Engine Knock 4310

Some injector's when getting plugged will offer an engine knock that could sound like a rod is about to come through the block. You didn't say how this happens or how long you need to run it to make it happen or at the rpm. We do need more info!






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 08-01-2005, 19:26 Post: 114210
fnemo1



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 Kubota Engine Knock 4310

Hi Art, Hi Oneace,
Well it happens when they are using a blower hooked to the pto,Knowing them it's running at full throttle,he ran it for 4 hrs. before it started to act up. when I changed the fuel filter I noticed a lot of black debri in the filter,it was just changed 1 month earlier,i did drain the tank and it was clean,I took it out,and it ran fine but not that long of time or that high rpm,should i try a good injector cleaner! I hope this info helps thanks again






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 08-01-2005, 20:42 Post: 114216
oneace

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 Kubota Engine Knock 4310

The black debris is more than likely algae. Get some fuel treatment that has algaecide and injector cleaner.






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 08-02-2005, 09:32 Post: 114234
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 Kubota Engine Knock 4310

I think Ace is on the right track, if the engine was about to grenade the knock wouldn't take 4 hours at full throttle to show up.

If the filter was really dirty it's possible (likely?) that some crap got past it already. It may require the pump & injectors to come out be thoroughly cleaned.

Best of luck.






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 08-02-2005, 16:48 Post: 114252
fnemo1



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 Kubota Engine Knock 4310

Thanks everyone,Ill go ahead and get some injector cleaner and fuel treatment and give it a try,if that does'nt work,then i will pull them apart and clean. thanks again
fnemo1






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 08-02-2005, 17:18 Post: 114254
oneace

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 Kubota Engine Knock 4310

I would not go taking the injection pump apart or even off the engine your self. there are very specific timing procedures that need to be followed before the pump is removed or disassembled.






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 08-02-2005, 20:44 Post: 114263
fnemo1



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 Kubota Engine Knock 4310

No Problem thanks






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Discussion Boards > Active Subjects > Messages as Posted > Kubota Review Forum

Thread 114194 Filter by Poster:
Art White 1 | fnemo1 4 | Murf 1 | oneace 3 |




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