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 MANUALSMAZDA1999626 ES, 2.5 D, STANDARDREPAIR AND DIAGNOSIS (SINGLE PAGE)ENGINE MECHANICALMECHANICAL2.5L V6OVERHAULCYLINDER BLOCK ASSEMBLYROD BEARINGS
1999 Mazda 626 ES, 2.5 D, Standard
Rod Bearings
1999 Mazda 626 ES, 2.5 D, StandardSECTION Rod Bearings
- Ensure connecting rod and connecting rod cap are marked with matching cylinder number for reassembly reference. Piston must be installed so front mark ("R" or "L") is toward timing belt end of engine. See Figure.
- Measure connecting rod cap bolt length. Measurement is taken from contact surface of bolt head to tip of bolt shank. Replace bolt if measurement exceeds 1.889" (48.00 mm). Coat connecting rod bolt threads with engine oil before tightening to specification. Ensure bearing oil clearance and connecting rod side play are within specification. See CRANKSHAFT, MAIN & CONNECTING ROD BEARING table under ENGINE SPECIFICATIONS.
RENDER: 1.0x
NO RELATED
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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.