ENGINE COMPRESSION
Check engine compression with engine at normal operating temperature, at specified cranking speed, all spark plugs removed and throttle wide open.
| Application | (1) Specification |
| Compression Ratio |
| Accent (1.5L) | 10.0:1 |
| Elantra (2.0L) | 10.3:1 |
| Sonata |
| 2.4L | 10.0:1 |
| 2.5L | 10.0:1 |
| Tiburon (2.0L) | 10.3:1 |
| Compression Pressure |
| Accent (1.5L) | 220-234 psi (15-16 kg/cm 2 ) |
| Elantra (2.0L) | 199-213 psi (14-15 kg/cm 2 ) |
| Sonata |
| 2.4L | 178 psi (12 kg/cm 2 ) |
| 2.5L | 149-170 psi (10-12 kg/cm 2 ) |
| Tiburon (2.0L) | 199-213 psi (14-15 kg/cm 2 ) |
| Maximum Variation Between Cylinders |
| All Models | 14 psi (1 kg/cm 2 ) |
| (1) Checked with engine coolant temperature at 176-205°F (80-96°C) and engine speed at 250-400 RPM. |
| (1) | Checked with engine coolant temperature at 176-205°F (80-96°C) and engine speed at 250-400 RPM. |
COMPRESSION SPECIFICATIONS
VALVE CLEARANCE
Note. All models are equipped with hydraulic lash adjusters. No adjustments are required.
IGNITION COIL
| Application | Primary | Secondary |
| Accent (1.5L) | 0.45-0.55 | 10,300-13,900 |
| Elantra (2.0L) | 0.45-0.55 | 10,300-13,900 |
| Sonata |
| 2.4L | (1) 0.78 | 20,000 |
| 2.5L | 0.67-0.81 | 11,305-15,295 |
| Tiburon (2.0L) | 0.45-0.55 | 10,300-13,900 |
| (1) Value is approximate with coil energized. See IGNITION CHECKS in BASIC DIAGNOSTIC PROCEDURES article. |
| (1) | Value is approximate with coil energized. See IGNITION CHECKS in BASIC DIAGNOSTIC PROCEDURES article. |
IGNITION COIL RESISTANCE - Ohms @ 68°F (20°C)
HIGH-TENSION WIRE RESISTANCE
| Wire Application | (1) Ohms |
| Accent (1.5L) |
| No. 1 | 4,800 |
| No. 2 | 10,000 |
| No. 3 | 7300 |
| No. 4 | 12,000 |
| Elantra (2.0L) |
| No. 1 | 15,300 |
| No. 2 | 12,400 |
| No. 3 | 10,700 |
| No. 4 | 8800 |
| Sonata |
| 2.4L | (2) |
| 2.5L |
| No. 1 | 4390-6590 |
| No. 2 | 2280-3430 |
| No. 3 | 3490-5240 |
| No. 4 | 1900-2860 |
| No. 5 | 3250-4870 |
| No. 6 | 1300-1950 |
| Tiburon (2.0L) |
| No. 1 | 15,300 |
| No. 2 | 12,400 |
| No. 3 | 10,700 |
| No. 4 | 8800 |
| (1) Resistance should not be more than 10,000 ohms per foot of spark plug cable. (2) Sonata 2.4L engine uses 2 ignition coils with an internal power transistor. Coil No. 1 is located on cylinder No. 4 spark plug. Coil No. 2 is located on cylinder No. 2 spark plug. |
| (1) | Resistance should not be more than 10,000 ohms per foot of spark plug cable. |
| (2) | Sonata 2.4L engine uses 2 ignition coils with an internal power transistor. Coil No. 1 is located on cylinder No. 4 spark plug. Coil No. 2 is located on cylinder No. 2 spark plug. |
HIGH-TENSION WIRE RESISTANCE
SPARK PLUGS
| Application | Number |
| Accent (1.5L) |
| Champion | RC9YC4/RC10YC4 |
| NGK | BKR5ES-11 |
| Elantra (2.0L) |
| Champion | RN9YC4/RC10YC4 |
| NGK | BKR5ES-11 |
| Sonata |
| 2.4L |
| Champion | RN10PYP4 |
| NGK | PGR5C-11 |
| 2.5L |
| Champion | RC10PYP4 |
| NGK | PFR5N-11/PFR6N-11 |
| Tiburon (2.0L) |
| Champion | RN9YC4/RC10YC4 |
| NGK | BKR5ES-11 |
| Application | Gap In. (mm) | Torque Ft. Lbs. (N.m) |
| All Models | 0.039-0.043 (1.0-1.1) | 15-21 (20-28) |
SPARK PLUG SPECIFICATIONS
FIRING ORDER & TIMING MARKS
Firing Order (Accent 1.5L). Scheme 1
Scheme 1: Firing Order (Accent 1.5L)
Firing Order (Elantra & Tiburon 2.0L). Scheme 2
Scheme 2: Firing Order (Elantra & Tiburon 2.0L)
Firing Order (Sonata 2.4L). Scheme 3
Scheme 3: Firing Order (Sonata 2.4L)
Firing Order (Sonata 2.5L). Scheme 4
Scheme 4: Firing Order (Sonata 2.5L)
IGNITION TIMING
| Application | (1) Base Timing |
| Accent (1.5L) | 4-14° @ 700-900 |
| Elantra (2.0L) | 5-15° @ 700-900 |
| Sonata |
| 2.4L | 3-7° @ 700-900 |
| 2.5L | 7-17° @ 600-800 |
| Tiburon (2.0L) | 5-15° @ 700-900 |
| (1) Ignition timing is not adjustable. |
| (1) | Ignition timing is not adjustable. |
IGNITION TIMING (Degrees BTDC @ RPM)
FUEL PUMP
| Application | At Idle W/ Vacuum psi (kg/cm2) | At Idle W/O Vacuum psi (kg/cm2) |
| Accent (1.5L) | 36 (2.5) | 44 (3.0) |
| Elantra (2.0L) | 37 (2.6) | 44 (3.0) |
| Sonata (2.4L & 2.5L) | 39 (2.7) | 46-49 (3.2-3.4) |
| Tiburon (2.0L) | 37 (2.6) | 44 (3.0) |
INJECTOR RESISTANCE
| Application | (1) Ohms |
| Accent, Elantra & Tiburon | 15.6-16.3 |
| Sonata | 13.0-16.0 |
| (1) Resistance measured at 68°F (20°C). |
| (1) | Resistance measured at 68°F (20°C). |
IDLE SPEED & MIXTURE
Note. Idle speed and mixture are computer-controlled.
FAST IDLE SPEED
Note. Fast idle speed is computer-controlled.
THROTTLE POSITION (TP) SENSOR
| Application | Ohms At Idle | Volts At Idle |
| Accent, Elantra & Tiburon | 700-3400 | .100-.825 |
| Sonata |
| 2.4L | 3500-6500 | .300-.900 |
| 2.5L | 1600-2400 | .250-.800 |