Mitsubishi: clicking in 98 montero sport engine

I assume you have self lubing tappets ( hydraulic), i would remove the
rocker cover and check the tappets for any sign of blockage, as a clicking
noise could be a sign of a blocked tappet. Fords had the same problem years
ago. A good way to fix, is remove the entire rocker gear. strip down and
inspect, clear any blockages, and refit and re assemble. One way it is
caused is not changing oil on a regular basis or using different oils. In
time it clocks thew small oil avenues and thuis causes the tappet to knock.
Pretty simple job if you have good tools and patience.

Peter

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