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I have a 721D have had bumerous pricey repairs with lomg wait time and still the dame problems persist.

So far there have been all new fuel lines, oil filter heatshield,injector pump, fuel pump installed.
At first it looked like air bubblrd going into the yank, but finaloly discovered it was oil getting into the diesel somehow.
It tries to run strong but when i pull back on the throttle the problem starts and the parts are a;; getting real hot.
I am pretty much out of business now but want to salvage what is left.
Any help would be so much appreciated.
Thank you.

looks like a lot of work has been done ,did you have the head gasket replaced and have the head checked for warpage and cracks?also have you had the injectors pressure tested?On my Yanmar tractor I had a stuck injector that was dumping too much fuel causing overheating and bent a valve...russ

173abn said:

looks like a lot of work has been done ,did you have the head gasket replaced and have the head checked for warpage and cracks?also have you had the injectors pressure tested?On my Yanmar tractor I had a stuck injector that was dumping too much fuel causing overheating and bent a valve...russ

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Thank you so much for the reply to my post.

They have tested the injector pressure at35 dont know what that means,
Took it to a Kubota dealer now, they are doing a compression check.
Oil is getting into the diesel somewhere just cannot figure out from where.
After 5 repairs and my business almost at the end (lost 12 clients so far)
You can see bubbles and a line of oil doing thru the clear tube into the tank.
The hydro filter i believe was not changed?
Grasshopper service just sends me from dealer to dealer with the same result.

Thank you,
Norman

if oil is getting into your fuel it sounds like bad rings.is oil getting into your coolant or is your oil milkey colored.If yes ,most likely Head Gasket.I do'nt remember if you said how many hrs you had on this machine.My 928D has a little over 2,000 hrs but so far no problems.Let us know what your dealer finds out and good luck.Sorry to hear your buisness is going south...russ