im new to owning a blaster and my friend seems to think its about to blow up . the blaster runs good and strong but sometimes makes a sound like the piston maybe slapping around but im not quite sure tho it has good compression and everything .anyone think they can give me some advice on this .
plz help !!
- Thread starter moore
- Start date
Hello and welcome to the forum.
Have you checked your plug via a plug chop? Is the bike overly lean? Is the oil injection still being used or are you premixing? Is this head slap coming at higher rpms or idle? If while riding do you feel engine misfire/power loss when you hear this noise?
Most piston slap is due to improper clearance from the piston to jug sleeve, due to excessive wear, incorrect bore, etc. This can cause major damage, piston skirt can snap(most common cause) and fragments end up in bottom end doing crank damage, etc, etc. Definitely recommended to get a good compression reading from a decent reader, has this been done yet or are you judging compression on kickstart feedback, etc??
Time to nail this down, better safe than sorry. Much easier to do a routine top end maintenance rebuild then to overhaul the motor after slap breakage and lower end damage, my .02...
it happends sometimes when idling or sometimes why riding . it does not loose any type of power when it happends or anything just makes the nose and kinda scared me . and im guessing it has fine compression by just kicking it . im going to compression test it when i go home .
That would be best, use a compression tester, get a full read and post your results. Also, you will most likely need to have pulled/or pull the head and check piston clearance, this is, most likely, where your issues lie...
