My Nissan Xterra is running odd. It has 135,000

My 2001 Nissan Xterra is running odd.
It has 135,000 miles and no wrench has ever been on it.
Now it is pinging and knocking
and I do have a knock sensor error code. It comes and goes
and sometimes so bad I want to shut it off. Im also missing some power and it has a deep sound when hitting the pedal
maybe timing off? Starts great
and idols ok but rough at times.

I read to igonor the knock sensor on here?

Also raunchy sound coming from
distibutor last 2 years when you
rev the motor and listen as it
rpm's down..


Thanks!