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.
2003 Mazda Tribute 2WD L4-2.0LFACTORY OEM SERVICE PROCEDURE
System Specifications
Cylinder head and valve train
Valve to valve guide clearance 0.017-0.064 mm (0.000662-0.0025196 inch)
Valve clearance-intake valve 0.11-0.18 mm (0.004331-0.007087 inch)
Valve clearance-exhaust valve 0.27-0.34 mm (0.0106299-0.0133858 inch)
Valve guide bore diameter (insert counterbore diameter)
intake 6.06 mm (0.23858 inch)
exhaust 6.06 mm (0.23858 inch)
Head gasket surface flatness 0.05/0.520/076 150 x 150
Valve head diameter
intake 32.0 mm (1.2598 inch)
exhaust 28.0 mm (1.10236 inch)
Valve face runout limit intake and exhaust 0.035 mm (0.0013779 inch)
Valve face angle 45 degrees
Valve stem diameter
intake 6.03 mm (0.23740 inch)
exhaust 6.03 mm (0.23740 inch)
Valve Springs
Valve springs compression pressure
intake 365 N (82 1 lb) @ 25 1 mm (0.988 inch)
exhaust 422 N (94.94 lb) @ 26.1 mm (1.0275 inch)
Free length 43.2 mm (1 701 inch)
Installed height 34.2 mm (1.346 inch)
intake 145 N (32.596 lb)
exhaust 180 N (40.464 lb)
Camshaft
Lobe lift
intake 8.9 mm (0 0137 inch)
exhaust 8.7 mm (0.0134 inch)
Theoretical valve maximum lift
intake 9.254 mm (0 3643 inch)
exhaust 8.6 mm (0.33858 inch)
End play service limit 0 080-0.220 mm (0.00315-0 00866 inch)
Bearing journal diameter 25.960-25 980 mm (1 0221-1 0227 inch)
Tightening specifications
For specifications regarding Cylinder Head bolts, refer to service procedure. Service and Repair
Intake Manifold bolts.
Camshaft Bearing Cap bolts.
Flywheel bolt 112 Nm (11.4 kgf-m, 83 ft.lbs.)
Exhaust Manifold bolts.
Valve to valve guide clearance 0.017-0.064 mm (0.000662-0.0025196 inch)
Valve clearance-intake valve 0.11-0.18 mm (0.004331-0.007087 inch)
Valve clearance-exhaust valve 0.27-0.34 mm (0.0106299-0.0133858 inch)
Valve guide bore diameter (insert counterbore diameter)
intake 6.06 mm (0.23858 inch)
exhaust 6.06 mm (0.23858 inch)
Head gasket surface flatness 0.05/0.520/076 150 x 150
Valve head diameter
intake 32.0 mm (1.2598 inch)
exhaust 28.0 mm (1.10236 inch)
Valve face runout limit intake and exhaust 0.035 mm (0.0013779 inch)
Valve face angle 45 degrees
Valve stem diameter
intake 6.03 mm (0.23740 inch)
exhaust 6.03 mm (0.23740 inch)
Valve Springs
Valve springs compression pressure
intake 365 N (82 1 lb) @ 25 1 mm (0.988 inch)
exhaust 422 N (94.94 lb) @ 26.1 mm (1.0275 inch)
Free length 43.2 mm (1 701 inch)
Installed height 34.2 mm (1.346 inch)
intake 145 N (32.596 lb)
exhaust 180 N (40.464 lb)
Camshaft
Lobe lift
intake 8.9 mm (0 0137 inch)
exhaust 8.7 mm (0.0134 inch)
Theoretical valve maximum lift
intake 9.254 mm (0 3643 inch)
exhaust 8.6 mm (0.33858 inch)
End play service limit 0 080-0.220 mm (0.00315-0 00866 inch)
Bearing journal diameter 25.960-25 980 mm (1 0221-1 0227 inch)
Tightening specifications
For specifications regarding Cylinder Head bolts, refer to service procedure. Service and Repair
Intake Manifold bolts.
Camshaft Bearing Cap bolts.
Flywheel bolt 112 Nm (11.4 kgf-m, 83 ft.lbs.)
Exhaust Manifold bolts.
Factory Service Tools
Use the Manual With the Right Hardware
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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.