Ford CSG-649 — Initial Ignition Timing Check and Adjustment
Adjustments · Distributor / ignition timing
For the Ford CSG-649, from the Ford service manual.
Applies to: Ford CSG-649
Procedure
- Clean and mark the specified timing mark with chalk or white paint.
- Disconnect the vacuum line and plug the disconnected vacuum line.
- Connect a timing light to the No. 1 cylinder spark plug wire and a tachometer to the engine.
- Start the engine and reduce idle speed to 600 RPM to be sure centrifugal advance is not operating.
- Direct the timing light on the timing marks; the notch on the pulley should line up between the 4 and 8.
- If not to specification, loosen the distributor retaining bolt and rotate the distributor body until marks are in line.
- Tighten the distributor retaining bolt and connect the vacuum hose.
- Accelerate the engine and verify the timing mark advances; disconnect the timing light.
Tools required
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Specs & values
- Ignition timing 8° B.T.D.C.
- Idle speed 500-550 rpm
Full service-parts list: Ford CSG-649 →
Source: Ford service manual. Steps and values are as documented; always cross-check against the official manual and any later revisions for your exact serial number before servicing.