Yes the timing can be set.
In a 1989 Nissan Pulsar NX : The 1.6 litre four cylinder engine has a timing CHAIN The 1.8 litre four cylinder engine has a timing BELT
No , the 2.5 litre four cylinder engine in a 2006 Nissan Altima has a timing CHAIN
The 2.4 liter four cylinder engine in a 2000 Nissan Frontier has a timing CHAIN
The manufacturer recommends that you change your 2000 Nissan Frontier four-cylinder engine timing belt every 60,000 miles. The 2000 Nissan Frontier does not have a timing chain, it has a timing belt.
If your question was "Does a 2004 Nissan Frontier have a timing belt?", the answer is YES if it's a V-6 engine, and NO if it's a 4-cylinder. The 4-cylinder engine has a timing chain rather than a belt.
The 2.5 litre four cylinder engine in a 2003 Nissan Altima has a timing CHAIN
The 3.3 litre V6 engine in a 1999 Nissan Frontier has a timing BELT
The 1.8 liter four cylinder engine in a 2007 Nissan Versa has a timing CHAIN
The 2.5 liter four cylinder engine in a 2002 Nissan Altima has a : timing CHAIN
The 1.6 litre four cylinder engine in a 1990 Nissan Pulsar NX has a timing CHAIN
The 3.3 litre V6 engine in a 2003 Nissan Frontier has a timing BELT
It is an electronic ignition and is not adjustable.