How far depends on how the pump and injectors and none react exactly the same to pump timing. For example, my pump was turned up and had stock injectors and performed better at 1. 45 mm of lift than 1. 65 mm.
As for using the tool,
1. Locate top dead center. The timing pin is sometimes not exact and knowing the timing pin is correctly engaged all the way can be confusing as well. The FSM has a valve dropping procedure to locate TDC and this is the procedure I used to verify the timing pin was accurate. Then I fixed a pointer to the timing case cover and marked the damper pulley to make identification easier.
2. Insert the YA8331 and set it to 2-3 mm of preload at TDC.
3. Turn the engine backward until the dial indicator stops changing. Set preload to 2 mm.
4. Turn engine to TDC and read the dial indicator. The difference between the preload and the reading is the pump timing in terms of mm of lift.
5. Rotate pump toward cylinder head to advance timing (increase dial indicator reading) or backward (away from cylinder head) to retard timing.
Repeat as necessary. Note that the dial indicator readings will change significantly with very small movements of the pump. The pump should be securely in place when taking the readings - fasten the 3 nuts so they are snug.
Brian
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