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.
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HOMESERVICE MANUALSSUZUKI1990SIDEKICK JSREPAIR AND DIAGNOSISENGINE PERFORMANCEENGINE CONTROLS - ADJUSTMENTSVALVE CLEARANCENOTES
1990 Suzuki Sidekick JS
Valve Clearance: Notes
1990 Suzuki Sidekick JSSECTION Notes
- Remove valve cover. Rotate engine until zero degree (TDC) timing mark of timing belt cover is in line with timing mark on crankshaft pulley. See Figure .
- Cylinder No. 1 should be at TDC on compression stroke. Remove distributor cap and ensure rotor is pointed upward at distributor hold-down bolt, and to No. 1 terminal of distributor cap. If not as described, rotate engine 360 degrees.
- Valve clearance is measured between adjustment screw and valve stem using shim thickness gauge. Check intake valve clearance of cylinders No. 1 and 2, and exhaust valve clearance of cylinders No. 1 and 3. See the VALVE CLEARANCE SPECIFICATIONS table.
- Turn crankshaft one complete revolution (360 degrees). Check intake valve clearance of cylinders No. 3 and 4, and exhaust valve clearance of cylinders No. 2 and 4.
- Adjust valves by loosening lock nut and turning adjustment screw until clearance is at specification. After adjusting clearance, tighten adjusting screw lock nut to 11-13.5 ft. lbs. (15-18 N.m) and recheck clearance. See VALVE CLEARANCE SPECIFICATIONS table.
VALVE CLEARANCE SPECIFICATIONS
| Application | Clearance In. (mm) | |
|---|---|---|
| Engine Cold | ||
| Intake | .005-.007 (.13-.18) | |
| Exhaust | .006-.008 (.15-.20) | |
| Engine Hot | ||
| Intake | .009-.011 (.23-.28) | |
| Exhaust | .010-.012 (.25-.30) | |
RENDER: 1.0x
NO RELATED
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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.