Dinli DL-702 2008, Service Manual

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10-8
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APPENDIX
4. Water pump noise
● Too much play on pump shaft bearing.
● Worn or damaged impeller shaft.
● Worn or damaged mechanical seal.
● Contact between pump case and impeller.
5. Other noise
● Connecting rod small end clearance excessive.
● Connecting rod big end clearance excessive.
● Piston ring worn, broken, or stuck.
● Piston seizure, damage.
● Cylinder head gasket leaking.
● Exhaust pipe leaking at cylinder head connection.
● Crankshaft runout excessive.
● Engine mounts loose.
● Crankshaft bearing worn.
● Camshaft chain tensioner trouble.
● Camshaft chain, sprocket, guides worn.
● Balancer bearing worn.
● Balancer gear worn.
● Loose alternator rotor.
● Worn or rubbing gears.
● Worn splines.