1. white or blue smoke? steam ba lumalabas or talaga smoke as in oil burning?
kung steam must be a head leak on water jacket kailangan palitan ang cyl. head gasket. pero kung oil smoke malamang piston rings. depends kung ano ang kailangan ng kotse mo.

pag head gasket lang kahit ikaw kaya mo na yan. pero kung yung later well ipa o/h mo na

2. squeeking sound , kung bago pads mo try putting slots sa pads by sawing grooves in it, this will cool the pads down a bit. also dont forget to put anti rattle (shims at back of pads)