Isuzu 3.2l engine noise.

Isuzu 3.2l engine noise.

Had a blown head gasket, so pulled the heads off had them resurfaced. Lapped the valves, put a new timing belt and water pump all timing Is fine but now have…

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Terry Scfleet says:

Camshaft scissor/preload gears The scissor gear on a camshaft is designed
to reduce the free play between the camshafts and eliminate any knocking
noise by ensuring constant contact is being made between two mating gears.
Basically a spring loaded gear applies constant pressure on the sister gear
in order to prevent any rattle or ticking noises occurring.

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