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.
2008 Mazda 5 L4-2.3LFACTORY OEM SERVICE PROCEDURE
General Specifications
General Specifications


Idle speed: MTX

Idle speed: ATX

Cylinder Head
Measure the length of each cylinder head bolt.
^ Replace any that exceeds maximum length.

Cylinder Head Bolt Length L
145.2-145.8 mm (5.717-5.740 in)
Cylinder Head Bolt Maximum
146.5 mm (5.768 in)
Tighten the cylinder head bolts in the order shown with the following 5 steps using the SST (49 D032 316).

Tightening torque
1. 3.0-11.0 N-m (30.6-112.1 kgf-cm, 26.6-97.3 in-lbf)
2. 13-17 N-m (1.4-1.7 kgf-m, 9.6-12.5 ft-lbf)
3. 43-47 N-m (4.4-4.7 kgf-m, 31.8-34.6 ft-lbf)
4. 88°-92°
5. 88°-92°
Camshaft Cap bolts
Tighten the camshaft cap bolts in the order shown with the following two steps.

Tighten torque
1. 5.0-9.0 N-m (51-91 kgf-cm, 44.3-79.6 in-lbf)
2. 14-17 N-m (1.5-1.7 kgf-m, 10.4-12.5 ft-lbf)
Crankshaft Pulley
Tighten the crankshaft pulley lock bolt in the order shown.
Tightening torque
1. 96-104 N-m (9.8-10.6 kgf-m, 70.9-76.7 ft-lbf)
2. 87°-93°
Oil Pump bolts
Tighten the oil pump bolts in two steps in the order indicated in the figure.

Tightening torque:
1. 8-12 N-m (82-122 kgf-cm, 71-105 in-lbf)
2. 17-23 N-m (1.8-2.3 kgf-m, 12.6-16.9 ft-lbf)
Exhaust Manifold
Tighten the exhaust manifold installation nuts in the order shown in the figure.

Tighten to 43-64 N-m (4.4-6.5 kgf-m, 32-47 ft-lbf)
Water Pump
Tighten to 8.0-11.5 N-m (82-117 kgf-cm, 71-101 in-lbf)
General Specifications (Part 1):
General Specifications (Part 2):
Idle speed: MTX
Idle speed: MTX:
Idle speed: ATX
Idle speed: ATX:
Cylinder Head
Measure the length of each cylinder head bolt.
^ Replace any that exceeds maximum length.
Cylinder Head Bolt Length L
145.2-145.8 mm (5.717-5.740 in)
Cylinder Head Bolt Maximum
146.5 mm (5.768 in)
Tighten the cylinder head bolts in the order shown with the following 5 steps using the SST (49 D032 316).
Tightening torque
1. 3.0-11.0 N-m (30.6-112.1 kgf-cm, 26.6-97.3 in-lbf)
2. 13-17 N-m (1.4-1.7 kgf-m, 9.6-12.5 ft-lbf)
3. 43-47 N-m (4.4-4.7 kgf-m, 31.8-34.6 ft-lbf)
4. 88°-92°
5. 88°-92°
Camshaft Cap bolts
Tighten the camshaft cap bolts in the order shown with the following two steps.
Tighten torque
1. 5.0-9.0 N-m (51-91 kgf-cm, 44.3-79.6 in-lbf)
2. 14-17 N-m (1.5-1.7 kgf-m, 10.4-12.5 ft-lbf)
Crankshaft Pulley
Tighten the crankshaft pulley lock bolt in the order shown.
Tightening torque
1. 96-104 N-m (9.8-10.6 kgf-m, 70.9-76.7 ft-lbf)
2. 87°-93°
Oil Pump bolts
Tighten the oil pump bolts in two steps in the order indicated in the figure.
Tightening torque:
1. 8-12 N-m (82-122 kgf-cm, 71-105 in-lbf)
2. 17-23 N-m (1.8-2.3 kgf-m, 12.6-16.9 ft-lbf)
Exhaust Manifold
Tighten the exhaust manifold installation nuts in the order shown in the figure.
Tighten to 43-64 N-m (4.4-6.5 kgf-m, 32-47 ft-lbf)
Water Pump
Tighten to 8.0-11.5 N-m (82-117 kgf-cm, 71-101 in-lbf)
Factory Service Tools
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- β’ You smell fuel, burning insulation, or see smoke.
- β’ Brakes feel soft, pull hard to one side, or make grinding noises.
- β’ The engine overheats, stalls repeatedly, or misfires under load.
- β’ You are missing required tools, torque specs, or safe lifting equipment.
- β’ You are not confident in the next step or safety outcome.
