LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Plymouth >> 1994 >> Laser Base, Automatic >> Repair and Diagnosis >> Engine Performance >> Engine Controls - Adjustments >> Ignition Timing >> Engine Controls - Adjustments >> 1.8L
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Engine Controls - Adjustments: 1.8L

  1. Ensure vehicle is at operating temperature, all accessories are off, and transmission is in Park or Neutral. Front wheels must be in straight-ahead position.
  2. Insert paper clip in Crankshaft Revolution Counter (CRC) or Tachometer (Tach) filter connector, and connect tachometer to inserted clip. See Fig 1 . Ensure curb idle speed is set to specification. See CURB IDLE SPEED CHECK (1.8L) under IDLE SPEED  . Turn engine off.
  3. Connect timing light. Using a jumper wire, ground ignition timing adjustment connector (Yellow/Red wire). See Fig 2 and Fig 3 . Start engine. Check base ignition timing. See IGNITION TIMING  table. Loosen distributor hold-down bolt, and adjust as necessary.
  4. Turn engine off. Disconnect ground (jumper wire) from ignition timing adjustment connector. Start engine. Check actual ignition timing. See IGNITION TIMING  table. Turn engine off. Remove all test equipment.
IGNITION TIMING (Degrees BTDC @ RPM)

Application Base (1) Actual
1.8L 5 @ 600-800 10 @ 600-800
2.0L 5 @ 650-850 8 @ 650-850
(1) If altitude is more than 2300 feet above sea level, actual timing may be advanced to ensure good combustion.
Fig 1: CRC Or Tach Filter Connector ID (1.8L)
G91J08294Courtesy of CHRYSLER CORP.
Fig 2: Ignition Timing Adjustment Connector ID (1.8L)
G90F00583Courtesy of CHRYSLER CORP.
Fig 3: Ignition Timing Adjustment Connector ID (2.0L)
G91E08296Courtesy of CHRYSLER CORP.
scientia non olet · About LEMON Manuals