www.zxrworld.co.uk

morning all. ive just bought my self a zxr 400 from a friend for a tidy some. im in the process of stripping it down the reabuilding it as its a non runner. all running now but ive got an oil leak coming from a machined hole just underneath the 4th cylinder header. any ideas what these holes are 4?

cheers
jay

im pretty sure they are the drainage holes for the spark plug wells so could be cam cover gasket leaking or spark plug well seals.

champion! ill get onto them then

its the gasket around the spark plug tube i had the same trouble sealed it up with sealant and no problem now

do you mean when u take the head off, the circle rubber gaskets?

No you don't need to take the head off
only the top cover which does have a rubber gasket

Each spark plug reccess has a round seal at the top and an "o" ring seal at the bottom once you have the top cover off you and just pull the spark plug "tube" out to gain access to the bottom "o" ring.....................worth a try just useing some sealer rather than getting new "o" rings and seals

i ment the rocker cover not the head sorry.

cheers 4 this, though i was ready to put it all back together untill i found this but cheers!

took the engine out the other day. n i recon its the bottom seals that have gone. ordered them 2day and hoping itll be ready for the mot and good weather next week.

cheers guys