Ford — Initial Ignition Timing Adjustment
Adjustments · Distributor / ignition
From a Ford service manual — check it applies to your exact model before use.
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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; connect a tachometer.
- Start engine and reduce idle speed to 600 rpm to be sure centrifugal advance is not operating.
- Direct the timing light on the timing marks; light should flash as notch on pulley lines up between 4 and 8.
- If timing is not to specification, loosen distributor retaining bolt and rotate distributor body until marks are in line.
- Tighten distributor retaining bolt and connect vacuum hose.
Tools required
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Specs & values
- Check specifications for correct initial ignition timing
- Clockwise rotation of distributor body advances timing; counterclockwise retards
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.