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 MANUALSTOYOTA1999CELICA 2D CONVERTIBLE, STANDARDREPAIR AND DIAGNOSIS (SINGLE PAGE)ENGINE PERFORMANCEENGINE CONTROLS - ON-VEHICLE ADJUSTMENTS - 4-CYLINDERENGINE MECHANICALVALVE CLEARANCECOROLLA
1999 Toyota Celica 2D Convertible, Standard
Valve Clearance: Corolla
1999 Toyota Celica 2D Convertible, StandardSECTION Corolla
- Disconnect spark plug wires from spark plugs and valve cover. Disconnect necessary hoses and engine wiring cover for removal of valve cover.
- Remove valve cover bolts/nuts, seal washers, cable bracket, valve cover and gasket. Rotate crankshaft clockwise (viewed from timing chain end of engine) until crankshaft pulley timing mark (groove) aligns with "0" mark on timing chain cover and cylinder No. 1 is at TDC on compression stroke. Cylinder No. 1 is front cylinder at timing chain end of engine.
- Ensure reference marks on camshaft sprockets are aligned and positioned in a straight line at top surface on timing chain cover. See Fig 1. If reference marks are not as specified, rotate crankshaft clockwise one full revolution (360 degrees) and realign crankshaft pulley timing mark (groove) with "0" mark on timing chain cover and then recheck reference mark alignment.
- With cylinder No. 1 at TDC on compression stroke, use feeler gauge to check valve clearance between valve lifter and camshaft on specified valves. Perform STEP 1. See Fig 2. Record valve clearance.
- To check remaining valves, rotate crankshaft clockwise one full revolution (360 degrees) and realign crankshaft pulley timing mark (groove) with "0" mark on timing chain cover. Using feeler gauge, measure valve clearance on specified valves. Perform STEP 2. See Fig 2. Record valve clearance.
- Ensure valve clearance is within specification. See VALVE CLEARANCE SPECIFICATIONS (COROLLA) table.VALVE CLEARANCE SPECIFICATIONS (COROLLA)
Application (1) In. (mm) Intake .006-.010 (.15-.25) Exhaust .010-.014 (.25-.35) (1) Adjust valve clearance with engine cold. - If valve clearance requires adjustment, camshafts must be removed for access to valve lifters. Different thickness valve lifters are used. Manufacturer recommends placing reference mark on timing chain and camshaft sprockets, removing timing chain tensioner and then removing camshaft sprockets and camshafts for access to valve lifter while supporting timing chain. To remove camshafts, see appropriate article in ENGINES.
- Remove valve lifter from cylinder head. Using micrometer, measure thickness of valve lifter. See Fig 3. Using measured clearance and valve lifter thickness, determine correct thickness of valve lifter to be used. See Fig 6 and Fig 7 . Install replacement valve lifter, camshafts and timing chain. Recheck valve clearance.
- Before installing valve cover and gasket, apply sealant at specified areas on cylinder head. See Fig 4. Install gasket, valve cover, seal washers, bolts and nuts. Tighten valve cover bolts/nuts to specification in sequence. See Fig 5. See TORQUE SPECIFICATIONS . To install remaining components, reverse removal procedure.
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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.