Contents: System type ↡ Ignition coil ↡ Distributor ↡ Spark plugs ↡ Sensors ↡ Tightening torque of connections, Nm ↡
System type
1.8 liter models - EZL
2.0 liter models with Stromberg carburetor - TSZ
2.0 liter models with Pierburg 2E-2 carburetor — EZL
2.0 litre fuel injected models:
- Late Models - EZL
- Early models without catalytic converter - TSZ
2.3 litre fuel injected models:
- Late Models - EZL
- Early models without catalytic converter - TSZ
Ignition coil
Models with TSZ ignition type:
- Primary winding resistance: 0.5 to 0.9 Ohm
- Secondary winding resistance: 6 to 16 kOhm
Models with EZL ignition:
- Primary winding resistance - 0.3 to 0.60 Ohm
- Secondary winding resistance: 8 to 13 kOhm
Distributor
Type - contactless, crankshaft driven
Contact Closed Angle - Determined by the ignition control system
Sensor resistance (only for TSZ system) — 500-700 Ohm
Ignition timing: *
Models with EZL ignition and Pierburg 2E - 2 carburetor:
- At idle speed - 11 to 15° before TDC
- At 3200 rpm, with vacuum, trim plug in position "S" - 38 to 42° before TDC
- At 3200 rpm, vacuum, trim plug in position "N" - 38 to 42° before TDC
- At 3200 rpm, without vacuum, trim plug in position "S" - 22 to 26° before TDC
- At 3200 rpm, without vacuum, with the trim plug in position "N" - 15 to 19° before TDC
Models with EZL ignition and fuel injection:
- At idle speed - 8 to 12° before TDC
- At 3200 rpm, with vacuum, trim plug in position "S" - 35 to 39° before TDC
- At 3200 rpm, with vacuum, trim plug in position "N" - 35 to 39° before TDC
- At 3200 rpm, without vacuum, with trim plug in position "S" - 23 to 27° before TDC
- At 3200 rpm, without vacuum, with the trim plug in position "N" - 17 to 21° before TDC
Models with TSZ ignition and fuel injection:
- At idle speed, using leaded gasoline, with a vacuum of 12 to 18° before TDC
- At idle speed, using unleaded gasoline, with a vacuum of 7 to 13° before TDC
- Full advance at 4500 rpm, without vacuum, on leaded petrol 32° BTDC 7° BTDC
- Vacuum advance at 4500 rpm - 8 to 12° BTDC
- Full advance at 4500 rpm, no vacuum, unleaded petrol 2 - 27° BTDC
- Vacuum advance at 4500 rpm - 8 to 12° BTDC
Models with TSZ ignition and Stromberg type carburetor:
- At idle speed, using leaded gasoline, with a vacuum of 10 to 16° before TDC
- Full advance at 4500 rpm, with vacuum - 40 to 44° BTDC
- Vacuum advance at 4500 rpm - 8 to 12° BTDC
Note: The values given are typical – for certain markets, models may have different ignition timing.
Spark plugs
All models - Champion S9YC/CC
Interelectrode gap - 0.8 mm
Sensors
Crankshaft sensor resistance is 680-1200 Ohm
(Material based on data from the portal: MERCEDESMAN)
Coolant Temperature Sensor:
Electrical resistance:
- At 80°C - 325 Ohm
- At 40°C - 1.2 kOhm
- At 0°C - 6 kOhm
Air temperature sensor:
Electrical resistance:
- At 80°C - 325 Ohm
- At 40°C - 1.2 kOhm
- At 0°C - 6 kOhm
Tightening torque of connections, Nm
Spark plugs - 15