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.
2007 Mazda B2300 L4-2.3LFACTORY OEM SERVICE PROCEDURE
System Specifications
Cylinder head

Install the cylinder head and the new bolts. Tighten the bolts in the sequence shown in five stages.
Stage 1 Tighten to 5 Nm (44 inch lbs.).
Stage 2 Tighten to 15 Nm (11 ft. lbs.).
Stage 3 Tighten to 45 Nm (33 ft. lbs.).
Stage 4 Tighten an additional 90 degrees (1/4 turn).
Stage 5 Tighten an additional 90 degrees (1/4 turn ).

Intake Manifold
Camshaft Bearing Cap

Tighten the bolts in the sequence shown in three stages.
Stage 1 Tighten the camshaft bearing caps one turn at a time until tight.
Stage 2 Tighten the bolts to 7 Nm (62 inch lbs.)
Stage 3 Tighten the bolts to 16 Nm (12 ft. lbs.)
Crankshaft Pulley
Using the special tools to hold the crankshaft pulley in place, tighten the crankshaft pulley bolt in two stages.
Stage 1 Tighten to 100 Nm (74 ft. lbs.)
Stage 2 Rotate an additional 90 degrees (1/4 turn)
Flywheel or Flexplate

Tighten the bolts in the sequence shown in three stages.
Stage 1 Tighten to 50 Nm (37 ft. lbs.)
Stage 2 Tighten to 80 Nm (59 ft. lbs.)
Stage 3 Tighten to 112 Nm (83 ft. lbs.)
Oil Pump

Tighten the bolts in the sequence shown in two stages.
Stage 1 Tighten to 10 Nm (89 inch lbs.)
Stage 2 Tighten to 20 Nm (15 ft. lbs.)
Exhaust Manifold
Tightening Torque 54 Nm (5.51 kgf-m, 40 ft. lbs.)

Water Pump
Install the cylinder head and the new bolts. Tighten the bolts in the sequence shown in five stages.
Stage 1 Tighten to 5 Nm (44 inch lbs.).
Stage 2 Tighten to 15 Nm (11 ft. lbs.).
Stage 3 Tighten to 45 Nm (33 ft. lbs.).
Stage 4 Tighten an additional 90 degrees (1/4 turn).
Stage 5 Tighten an additional 90 degrees (1/4 turn ).
Intake Manifold
Camshaft Bearing Cap
Tighten the bolts in the sequence shown in three stages.
Stage 1 Tighten the camshaft bearing caps one turn at a time until tight.
Stage 2 Tighten the bolts to 7 Nm (62 inch lbs.)
Stage 3 Tighten the bolts to 16 Nm (12 ft. lbs.)
Crankshaft Pulley
Using the special tools to hold the crankshaft pulley in place, tighten the crankshaft pulley bolt in two stages.
Stage 1 Tighten to 100 Nm (74 ft. lbs.)
Stage 2 Rotate an additional 90 degrees (1/4 turn)
Flywheel or Flexplate
Tighten the bolts in the sequence shown in three stages.
Stage 1 Tighten to 50 Nm (37 ft. lbs.)
Stage 2 Tighten to 80 Nm (59 ft. lbs.)
Stage 3 Tighten to 112 Nm (83 ft. lbs.)
Oil Pump
Tighten the bolts in the sequence shown in two stages.
Stage 1 Tighten to 10 Nm (89 inch lbs.)
Stage 2 Tighten to 20 Nm (15 ft. lbs.)
Exhaust Manifold
Tightening Torque 54 Nm (5.51 kgf-m, 40 ft. lbs.)
Water Pump
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.
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