Engine - Sag or Hesitation when Started Cold
85mitsubishi03SUBJECT:
CORDIA/TREDIA COLD DRIVEABILITY
NO. STB-85-14-006
DATE December, 1985
MODEL 1984, 1985 Cordia/Tredia 2.0L
PURPOSE
This bulletin contains information to correct a condition of engine sag or hesitation which may occur during the first two or three miles of operation after the engine is started cold and/or a steady-state surge when warm.
VEHICLES AFFECTED
This driveability condition may be corrected on certain 1984 and 1985 Cordia/Tredia models with 2.0L engine. (Remember that driveability is also influenced by TPS adjustment, jet valve clearances, ignition timing, spark plug condition, and other "basic" factors which must all be in proper adjustment in order for this driveability kit to do its job.)
PARTS REQUIRED
Six kits are available. Each kit contains one Primary Main Air Jet and one Vehicle Emission Control Information Update Label. Please refer to Table I below for vehicle applications and part numbers.
TABLE I: CORDIA/TREDIA DRIVEABILITY KITS
M.Y. Trans. Kit No. Application
1984 M/T, A/T MD104630 Federal
MD104632 California
1985 M/T MD104634 Federal
A/T MD104635 Federal
M/T MD104636 California
A/T MD104637 California
FIGURE 1:
PROCEDURE
1. Remove the air cleaner.
2. Remove the primary air jet shown in Fig. 1.
NOTE: A "WD-40" nozzle flattened at one end makes a good removal tool. Hold the choke shut to prevent the jet from failing into the carburetor.
3. Install the new Primary Air Jet from the kit.
4. Reinstall the air cleaner.
5. After warming up the engine, set ignition timing to 8 degrees BTC.
6. Install the new Vehicle Emission Control Information Update Label from the kit over the existing label under the hood.
WARRANTY CONSIDERATION
Labor Operation Code: 14 30 01 92
Time Allowance: 0.4 hr.