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  1. K

    B7500HSD "knock" on the upper head area

    YES! Everything is back to normal. The bad injector nozzles were the culprits. I even replaced the universal joint on the front drive shaft. The previous one was all chewed up looking..almost hanging on by a thread. I'm two steps from becoming a certified kubota tech. :cool:*pouring the sarcasm...
  2. K

    B7500HSD "knock" on the upper head area

    I got the injectors back. The guy did a great job of cleaning them up and replacing the nozzles. I asked for a quote on the injection pump cleaning it was waaay above my budget so he gave me some pointers on how to flush it out by gravity feeding it diesel and pushing on the bottom plunger...
  3. K

    B7500HSD "knock" on the upper head area

    well..Jack the injector guy said all three of my nozzles are bad. He tested them to 4500psi and they wouldn't even open. The valve part of the nozzle won't even come off. They're frozen..won't even spin freely. He's hoping I didn't damage my injection pump by running it in the condition that it...
  4. K

    B7500HSD "knock" on the upper head area

    Yes..there is a bunch of white/blueish smoke. Very strong smell as well. I ended up taking out the injectors and I'll try to see if I can find a reputable injector specialist around my area.
  5. K

    B7500HSD "knock" on the upper head area

    Fuel filter is newish condition...just replaced a month ago. At first I thought it was because he didn't bleed lines after the filter install but it still doing that after the bleeding. I'm thinking it's the injection pump or injectors like you said.
  6. K

    B7500HSD "knock" on the upper head area

    As far as I can tell there's no additional oil flowing into the rocker area. It's not totally dry by any means. The pool of oil that's already there doesn't increase or decrease when running the engine. The tractor was bought back in 2000 and gets used at least 2,3 times a week. Not sure on the...
  7. K

    B7500HSD "knock" on the upper head area

    Hey guys..newbie here. I was hoping someone could chime in and tell me what could possibly be going on with my father in law's B7500HSD. We had a tractor mechanic come over and without even diagnosing where the sound was coming from he tore into the bottom end(a waste of 250 dollars) to find the...