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Kubota starting hard
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JRosenberger
Posted 6/22/2026 10:18 (#11681497 - in reply to #11681009)
Subject: RE: Kubota starting hard


Milford, IL
Check cranking compression, without looking up specs guess it should be over 400 PSI cranking. Tools trucks or Hazard Fraught tools will likely have the proper threaded glow plug adapter.

6,000 hours is getting up there for a D905, depends on service history and how many gallons/hour it burned during those hours.

Long crank times can also be air intrusion into supply and sometimes return fuel lines, it doesn't take much air to cause a problem. Can replace a section of the return line to tank with clear hose and check for air bubbles in fuel, or simply replace all supply and return lines if they are original.
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