Sir,
I notice my engine temp is always below 1/4....I highly suspect that the previous owner/mechanic probably removed or did something to the thermostat....I wonder if I put back the thermostat to maintain normal engine temp. would this probably lessen the fuel knock at idle? Doing this will not totally remove engine knock. But it might shorten the knocking time as the engine will reach operating temp sooner.

By the way I did put the petron power booster and yes it did make a difference already...it silenced the fuel knock noticebly...thanks!!! Good...