Ignition Timing
- With engine at normal operating temperature, place in Neutral (M/T) or Park (A/T). Disconnect and plug vacuum advance hoses (if equipped).
- On all except carbureted B2200, connect jumper wire between timing test connector and ground. See Fig 1 . Ensure idle speed is correct. Connect timing light and set timing as required. See PISTON ENGINE IGNITION TIMING SPECIFICATIONS table. See Fig 2 .
PISTON ENGINE IGNITION TIMING
| Application | Man. Trans. | (1) Auto. Trans. | |||
|---|---|---|---|---|---|
| B2200 | |||||
| Carbureted | 6 @ 825 | 6 @ 825 | |||
| Fuel-Injected | 6 @ 750 | 6 @ 770 | |||
| B2600i | 5 @ 750 | 5 @ 770 | |||
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NOTE:
Mixture adjustment is NOT a normal tune-up procedure. DO NOT adjust mixture unless mixture control unit is replaced or vehicle fails emissions test.