Vacuum Modulator Rod
WARNING: This page is about a different car, the 1989 Isuzu I-Mark, 1988 Isuzu I-Mark, and 1987 Isuzu I-Mark. However, it is still accessible from the selected car via links, so may be relevant.
To determine correct vacuum modulator rod length, measure dimension "N" at transaxle. See VACUUM DIAPHRAGM ROD SELECTION table for correct rod to select. Also, see Fig 1.
VACUUM DIAPHRAGM ROD SELECTION
| Dimension "N" In. (mm) | Rod Length In. (mm) |
|---|---|
| Below 1.00 (25.4) | 1.16 (29.5) |
| 1.000-1.020 (25.4-25.9) | 1.18 (30.0) |
| 1.020-1.039 (25.9-26.4) | 1.20 (30.5) |
| 1.039-1.059 (26.4-26.9) | 1.22 (31.0) |
| Over 1.059 (26.9) | 1.24 (31.5) |