Montero Sport Timing Belt Replacement

[dr. d]

Any signs ng engine bago masira or maputol ang tbelts?

"poor engine performance", if you are lucky.
if you are unlucky, they just snap without warning.
i have experienced engine timing chain malfunction. my sentra's engine just stopped. fortunately, the engine is one of those engines designed in such a way that the pistons and valve tappets never meet, despite timing malfunction.
in my car, the chain did not snap. the bolt holding the timing gear got loose and the gear fell off. fortunately, nothing else got damaged. all the repairman had to do, was to re-attach the parts and tighten the bolt.

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I've been advised even timing chains aren't "forever".

many timing chains last the life of the engine.
but they do malfunction, from time to time.