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Re: Real World 1.6 16v 1999-2003 Scenic K4M Fuel Usage/Reliabilty?
I have heard that in the majority of cases failure is mainly caused by tensioners that have reached the end of their life and cause the belt to jump off.
On my scenic, the belt and tensioner were replaced at 53k miles then again at 90k. Car now has 114k on clock.
Head gaskets on this motor do not seem to be an issue, and they are pretty straightforward engines to work on in my opionion and offer a decent power output. The scenic RXE which is a heavy beast still does not feel underpowered with this engine.
I would not touch anything with the variable valve timing though in later cars.
Currently in adamh108's garage:
1999 Renault Clio RXE Auto -- 2000 Renault Scenic RXE -- 2000 Renault Scenic Sport -- 1988 Pontiac Firebird Trans-Am -- Saab 9-5 3.0 TiD Vector Sport Wagon