Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
SYS.OK|MANUAL.DB● LIVE
HOMESERVICE MANUALSMAZDA1990626 LX, 4D HATCHBACK, 2.2 1, AUTOMATICREPAIR AND DIAGNOSIS (SINGLE PAGE)ENGINE PERFORMANCEENGINE CONTROLS - ADJUSTMENTSADJUSTMENTSENGINE COMPRESSION
1990 Mazda 626 LX, 4D Hatchback, 2.2 1, Automatic
Engine Compression
1990 Mazda 626 LX, 4D Hatchback, 2.2 1, AutomaticSECTION Engine Compression
- Ensure battery is fully charged and engine is at normal operating temperature. Allow engine to cool for 10 minutes. Remove spark plugs and disconnect ignition coil primary connector.
- Hold throttle valve fully open during test. Attach compression gauge and crank engine until maximum pressure is reached at each cylinder. See COMPRESSION SPECIFICATIONS table. Lowest cylinder pressure should be at least 75 percent of highest cylinder pressure.
COMPRESSION PRESSURE SPECIFICATIONS
| Application | Minimum psi (kg/cm2 ) @ RPM | Standard psi (kg/cm2 ) @ RPM |
|---|---|---|
| Non-Turbo | 114 (8.0) @ 270 | 162 (11.4) @ 270 |
| Turbo | 98 (6.9) @ 260 | 139 (9.8) @ 260 |
RENDER: 1.0x
NO RELATED
Recommended Tools & Savings
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Affiliate disclosure: We may earn a commission at no extra cost to you.
When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.