LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Honda >> 1988 >> Civic Base, 2D Hatchback >> Repair and Diagnosis >> External Pages >> Different car >> Section 10 (Ignition Timing Control System) >> Component Testing >> Advance Diaphragm
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Advance Diaphragm

WARNING: This page is about a different car, the 1988 Honda Prelude and 1988 Honda Accord. However, it is still accessible from the selected car via links, so may be relevant.
  1. Remove distributor cap. Disconnect vacuum hoses from advance unit. Connect vacuum pump to inner diaphragm fitting. Apply at least 20 in. Hg. Stator should move as vacuum is applied, hold steady, and return to original position when vacuum is released.
  2. Repeat procedure with outer diaphragm. If stator does not move, check breaker plate for freedom of movement. If breaker plate moves freely and either diaphragm does not respond properly, replace diaphragm assembly.
scientia non olet · About LEMON Manuals