The timing chain itself is not hard to change , but the engine has to be removed to do it, that is why it is such a costly job if taken in to a garage . a common fault i believe on these engines .
If it had a timing belt, you would replace it at 90,000 miles. But this engine has a timing chain and does not have a belt.
When the engine is overhauled as it is designed to normally last the life of the engine.
It has a Timing Chain.
a timing chain
The 3.0 litre V6 engine in a 1999 Infiniti I30 has a timing CHAIN
The 1999 Cadillac Seville does not have a timing belt, it has a timing chain.
The 3.8 litre V6 engine in a 1999 Ford Mustang has a timing CHAIN
It has a timing chain that should last the life of the engine.
The 3.4 litre V6 engine in a 1999 Pontiac Trans Sport has a timing CHAIN
The 3.0 litre V6 engine in a 1999 Infiniti I30 has a timing CHAIN
normally you shouldn't have to replace a timing chain unless you've been horsebeating your vehicle
It has a belt which must be replace every 60,000 miles. This is an interference engine! If the belt breaks there will be serious engine damage.