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Home›Repair guides›Ford›Initial Ignition Timing Adjustment

Ford LSG 875 — Initial Ignition Timing Adjustment

Adjustments · Distributor

For the Ford LSG 875, from the Ford service manual.

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Procedure

  1. Clean and mark the specified timing mark with chalk or white paint.
  2. Disconnect the vacuum line and plug the disconnected vacuum line.
  3. Connect a timing light to No. 1 cylinder spark plug wire and a tachometer to the engine.
  4. Start engine and reduce idle speed to 600 RPM so centrifugal advance is not operating.
  5. Loosen distributor retaining bolt and rotate distributor body until marks are in line.
  6. Counterclockwise rotation advances timing; clockwise rotation retards timing.
  7. 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

  • Initial spark advance 10 degrees BTDC

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.

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