Colt Vista 4WD L4-1997cc 2.0L SOHC (1985)
1.
Locate the fast idle adjustment screw (Figure 8).
2.
Turn the screw 3/8 turn clockwise.
NOTE:
The fast idle adjustment screw has a slot for screwdriver engagement. At the time of assembly, the screw was painted yellow.
3.
Inspect the carburetor to determine if the concealment plug at the idle mixture adjusting screw (MAS) was previously removed and not reinstalled.
If the plug is missing, skip steps 4 through 6. If the plug is present, proceed to step 4.
4.
Clamp the carburetor in a vise with the idle mixture adjusting screw (MAS) facing up. (Make sure to protect the gasket surface from the vise jaws.)
5.
Drill a 5/64 in. (2 mm) pilot hole in the bottom area of the casting surrounding the idle mixture adjusting screw (MAS), then redrill the hole to 1/8
in. (3 mm), (Figure 9).
6.
Insert a blunt pin punch into the hole and drive out the plug.
7.
Reinstall the carburetor following the Service Manual procedures using the provided carburetor gasket.
8.
Reinstall the throttle return spring.
9.
Refill the radiator coolant.
E. Replace Front Catalyst (MCC) & Insp./Repl. Exhaust Manifold
1.
Remove the air injection tube. Disconnect the oxygen sensor connector and remove the heat shield from around the exhaust manifold.
