Jet Valve Adjustment
- Before adjusting, note the following:
- Misadjusted jet valve clearance will adversely affect emission levels.
- Adjust jet valve clearance before adjusting intake valve clearance.
- Before adjusting jet valve, retighten cylinder head bolts cold. See CYLINDER HEAD TORQUE SPECIFICATIONS chart.
- Adjust jet valve clearance with intake valve adjusting screw fully loosened.
- With engine at normal operating temperature, stop engine, remove rocker cover and position appropriate piston at TDC of compression stroke.
- Back off intake valve side adjusting screw 2 or more turns. Loosen lock nut on jet valve adjusting screw.
- Back off jet valve adjusting screw (counterclockwise) and place .010" (.25 mm) feeler gauge between top end of jet valve stem and bottom end of adjusting screw. See Fig 2
.
- Turn down adjusting screw (clockwise) until proper clearance is obtained.
NOTE:
Tensile strength of jet valve spring is weak. DO NOT force screw to turn, putting excess pressure on spring.
- Hold adjusting screw and tighten lock nut. Recheck clearance. Adjust intake valve clearance to .010" (.25 mm). Repeat adjustment at each cylinder.
IGNITION TIMING SPECIFICATIONS
| Application |
Man. Trans. |
Auto. Trans. |
| Colt (All) |
10 @ 700 |
10 @ 700 |
| Colt Vista |
5 @ 700 |
5 @ 700 |
| Conquest |
10 @ 700 |
10 @ 700 |
| Ram-50 |
| 2.0L |
5 @ 700 |
7 @ 700 |
| 2.6L |
7 @ 700 |
5 @ 700 |