i have got a gilera runner 125 engine which i had rebuilt about 3 or 4 months ago because water started leaking out the back of the water pump and now it has started doing it again does anyone now why this happens or is it some thing that just does. also i now you have to split the engine to replace it but would i have to re new the main bearings again or could i just replace the water pump cheers for any help
replace bearings aswell if this was second time than i would suggestan electric pump better than standard mechanical pump also would be external etc..
