Cold Start System

1986 Jeep Cherokee Chief, 4D Utility, 2.8 W, AutomaticSECTION Cold Start System

The cold start system consists of a capsule (spring housing), linkage, thermostat and a bi-metallic spring. When engine is cold, thermostat inside capsule releases bi-metallic spring. The spring pulls timing control lever toward "ADVANCE" position, and throttle lever is pulled toward fast idle.

As engine temperature increases, thermostat slowly expands, compressing spring. When spring is compressed, control cable is released, and throttle lever returns to original position.

RENDER: 1.0x

NO RELATED

Recommended Tools & Savings

Use the Manual With the Right Hardware

Pair factory procedures with proven DIY tools so the instructions are easier to execute.

Affiliate disclosure: We may earn a commission at no extra cost to you.

When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • β€’ You smell fuel, burning insulation, or see smoke.
  • β€’ Brakes feel soft, pull hard to one side, or make grinding noises.
  • β€’ The engine overheats, stalls repeatedly, or misfires under load.
  • β€’ You are missing required tools, torque specs, or safe lifting equipment.
  • β€’ You are not confident in the next step or safety outcome.