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.
2004 Mazda 3 L4-2.3LFACTORY OEM SERVICE PROCEDURE
Camshaft, Engine
Camshaft Specifications
Maximum runout
(Maximum) 0.03 mm {0.0012 in}
Camshaft standard height (mm {in})
With variable valve timing mechanism
IN: 42.44 {1.671}
EX: 41.18 {1.621}
Without variable valve timing mechanism
IN: 42.12 {1.659}
EX: 41.08 {1.618}
Camshaft minimum height (mm {in})
With variable valve timing mechanism
IN: 42.33 {1.666}
EX: 41.06 {1.616}
Without variable valve timing mechanism
IN: 42.01 {1.653}
EX: 40.96 {1.612}
Camshaft journal diameter
(Standard) 24.96-24.98 mm {0.9827-0.9834 in}
(Minimum) 24.95 mm {0.982 in}
Camshaft journal oil clearance
(Standard) 0.03S-O.080 mm {0.0014-0.OO31 in}
(Maximum) 0.09 mm {0.0035 in}
Camshaft end play
(Standard) 0.09-0.24 mm {0.003S-O.0094 in}
(Maximum) 0.25 mm {0.0098 in}
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.
