knocking sound (or pinging) is very hard to describe.
if you can hear a metalic sound or if it sounds like "shaking a can of sand/marbles" or a rattling sound ...when u accelerate your engine, then your engine is knocking.
hi all DIY big big bro sifu here. i got one question here. i was modified a center locking for my car last year (iswara aeroback). its cost me arround RM200 . but at least i satisfied with the function that...
Does any of u saw this product b4? I m wondering if we can DIY this thing ourself. The injector is assemble to inlet manifold through an air intake tube. Sorry could find any picture of this thing.