OIL LEAKING AT OR NEAR DISTRIBUTOR

[Paul666]

hi i have a problem with my corsa b 1.4 sohc car its a 99 plate and all is well till the engine heats up then when i go up a prolonged hill or fether the gas to keep speed up i tend to get pinking coming from engine been trying to figure out where i have been getting this from with no luck. had another look today and noticed that under the distrbutor i seem to have a oil leak its not real bad but defo there as i wiped it all away around a week ago and its now back also my bottom HT lead doesnt seem to be a great fit. if any one could help me out it would be much appreciated

[PRICER]

if you remove your distributor you should find a rubber ring you can replace this or just get clean it all off and cover it in sealant and put it back on,

[Paul666]

thanks pricer to take the DIS off looks fairly straight forward till i looked at the haynes and it goes on bout TDC etc lol. dont wanna mess up the timing is it ok to take it off and just put it back on exactly as i found it or could taking it off mess up the timing etc? is the ring located on dis or engine block? thanks again