Hai there..pls help me with this question, i've bought a 2nd hand R34, and yes the mileage is more than 120,000km, do you suggest for me to do port polish to the engine? and one more thing, i've bought a 2nd HKS...
Knocking (also called pinking or pinging)—technically detonation—in internal combustion engines occurs when fuel/air mixture in the cylinder has been ignited by the spark plug and the smooth...