Vacuum Advance Distributor Specifications

WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 1990 Mitsubishi Van, 1990 Mitsubishi Sigma, 1990 Mitsubishi Precis, 1990 Mitsubishi Pickup, and 1990 Mitsubishi Montero. However, it is still accessible from the selected car via links, so may be relevant.

With engine at operating temperature, disconnect vacuum hose from distributor. Run engine at idle.
Using an advance timing light, check ignition timing. Raise engine speed to specified RPM. Check ignition timing. See DISTRIBUTOR ADVANCE SPECIFICATIONS table.

Connect a vacuum pump to distributor advance unit. With engine running at idle, apply specified vacuum to advance unit. Check ignition timing. See DISTRIBUTOR ADVANCE SPECIFICATIONS table.

DISTRIBUTOR ADVANCE SPECIFICATIONS ⁽¹⁾

Application

Centrifugal Degrees @ RPM

Vacuum Degrees @ In. Hg

Montero (2.6L)

0 @ 1600

⁽²⁾ 0 @ 3.15

Montero 2.6L

9 @ 2800

8 @ 5.91

Montero 2.6L

19 @ 6000

20 @ 14.17

⁽¹⁾	Advance specifications for models not listed are computer controlled.

⁽²⁾	Idle advance on Calif. and High Altitude models is zero degrees @ 2.36 in. Hg and 5 degrees @ 3.15 in. Hg.