DR-22B Rich Engine Operating Condition

*** UPDATED BY TSB #18-61-86

1. With diagnostic read-out tool connected and engine Off, disconnect the distributor pick-up connector. Ensure read/hold switch of read-out tool is in Read position.
2. While observing display on read-out tool, crank engine at wide open throttle for 10 seconds, stop, and crank engine again for 10 seconds.
3. If display on read-out tool changes to 0, replace the fuel injector.

NOTE: Before replacing the fuel injector make sure the lower O ring is not split or rolled over.

4. If display on read-out tool does not change to 0, proceed to Test 24. DR-24A Driveability Not Related to Engine Controls