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Bonus - Jackaroo Manual
Maintenance manual

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An area that we don’t consider enough with poor starting problems.

Fuel delivery and fuel filter problems

Fuel Filter - Jackaroo

The problem I found was an air leak across the filter sealing ring, which traced to an incorrectly designed fuel filter [all numbers lined up], which was resolved by careful filing of the inner housing, below the screw thread to allow filter to properly seat.

See below:

4JX1 Filter A

Coolant in the diesel fuel found in vehicle – How to manage