Does anyone know about engine knock ?

yes i do

Help ! hears what i know so far,

its piston slap that i have, only does it in the morning,and goes after 10mins and sounds really smooth,only had car 3 weeks,been worried

should i

1 get the fourth piston replaced
2 get all four done ?
3 dont worry and drive it !
4 some say garage will do under warrenty, mines at 59000 but over
years,got my00
5 Its something different ! ?

cheers mate,any info would be cool !