Kubota B3300SU - Compression

Big Tort

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Kubota B3300SU
Apr 8, 2025
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Corpus Christi
Does anyone know how to check compression on the Kubota B3300SU? Can not get it started..? I have verified fuel to the injectors, cleaned the starter, however found a couple brushes almost fully worn. I spray lube into the intake and it wants to start but it just will not get going..
 

North Idaho Wolfman

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To test the compression you would get a diesel compression tester.
You can get them on Amazon, Ebay, Harbor Freight.

Spraying anything into the intake is an extremely bad idea.
This is an ultra high compression engine and anything foreign can have bad consequences.

When did it start and run last?
 

Big Tort

New member

Equipment
Kubota B3300SU
Apr 8, 2025
2
0
1
Corpus Christi
Thank you for mentioning that.. It's been sitting for a while now.. The unit last ran about a year ago. Also.. I was told, one of the hands at the auto shop where it was located, took the injectors out and cleaned them..??