Having a problem with the Kubota V2203-E, ser 0XE0325, in a 1999 763.
Problem started when machine ran out of fuel, after refueling ran horrible.
Pulled fuel filter, about 1/4 full of water.
Filter changed, lines flushed, cranked and ran like a scalded dog so thought everything was ok.
Ran great 10 minutes, then has to sit 20-30 min. Runs great another 10, then sit 20-30 min. Over and over.
Could a bit of water have hit injector pump on 1 and 4, scored the pistons, so they work until heated up, then start binding??
To isolate the problem, bypassed fuel supply, strapped an outboard fuel tank on top of the machine, gravity feed to transfer pump, with a clear plastic hose at engine to verify no bubbles/water in the fuel.
Same problem, runs great about 10 minutes, then starts skipping - have to shut down, wait and repeat.
Cracked nuts on top of injectors after hot and running rough, #1 is skipping bad, #4 has low power but still firing, cyl 2 and 3 normal.
Fuel is squirting good around lines on 2 and 3 when cracked, but not good on 1 and 4, SO thinking injection pump problems?
To test injector pump output, wanted a known good injector:
Book calls for injector 7023120 (was 6722147) injector assy, $232 each at dealer.
Tried crossing over to Kubota tractor part with no success, but *guessing* aftermarket holder kit 16082-53903 (was 16082-53900) is close, so ordered one off internet for $57 with free shipping, for testing purposes.
Problem is, I can't tear down machine because they are still running during the day, and whatever is done must be back together and running (even for 10 minute periods) at daylight.
Plan is to pull injection line, and connect test injector to each pump section when hot and check spray pattern.
If #1 and #4 are bad, should I attempt replacing 'delivery valves' referenced in Kubota info?
Bobcat pump number is 7020869 (was 6674676) but no breakdown on pump.
Kubota 'delivery valves' are 16475-51030, about $40 each.
Worth a try?
Thanks, William
Problem started when machine ran out of fuel, after refueling ran horrible.
Pulled fuel filter, about 1/4 full of water.
Filter changed, lines flushed, cranked and ran like a scalded dog so thought everything was ok.
Ran great 10 minutes, then has to sit 20-30 min. Runs great another 10, then sit 20-30 min. Over and over.
Could a bit of water have hit injector pump on 1 and 4, scored the pistons, so they work until heated up, then start binding??
To isolate the problem, bypassed fuel supply, strapped an outboard fuel tank on top of the machine, gravity feed to transfer pump, with a clear plastic hose at engine to verify no bubbles/water in the fuel.
Same problem, runs great about 10 minutes, then starts skipping - have to shut down, wait and repeat.
Cracked nuts on top of injectors after hot and running rough, #1 is skipping bad, #4 has low power but still firing, cyl 2 and 3 normal.
Fuel is squirting good around lines on 2 and 3 when cracked, but not good on 1 and 4, SO thinking injection pump problems?
To test injector pump output, wanted a known good injector:
Book calls for injector 7023120 (was 6722147) injector assy, $232 each at dealer.
Tried crossing over to Kubota tractor part with no success, but *guessing* aftermarket holder kit 16082-53903 (was 16082-53900) is close, so ordered one off internet for $57 with free shipping, for testing purposes.
Problem is, I can't tear down machine because they are still running during the day, and whatever is done must be back together and running (even for 10 minute periods) at daylight.
Plan is to pull injection line, and connect test injector to each pump section when hot and check spray pattern.
If #1 and #4 are bad, should I attempt replacing 'delivery valves' referenced in Kubota info?
Bobcat pump number is 7020869 (was 6674676) but no breakdown on pump.
Kubota 'delivery valves' are 16475-51030, about $40 each.
Worth a try?
Thanks, William
Bobcat 763, Kubota V2203-E engine, runs good 10 min, sit 20, repeat.
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