some advice for a newbie creaking when peddling

pitbull4x4

Hi just bought a 2nd hand bike and when peddling it creaks seams to be in some gears more then others question is could this be the chain or the bottom bracket?

thanks

nicklouse

it could be anything.

have a read
http://www.parktool.com/blog/repair-hel ... rive-train

pitbull4x4

nicklouse


Thank you will have a read and hopefully sort it