400 oil leak
Dorien, with reference to your oil problem, first the distributor, there is
an O ring on the stem which locates in the aluminium housing this is easy to
change. Second check the clearance of your valves in the valve guides, this is
also a place were excessive oil consumption can generate from. One can buy
replacement valves of 8mm diameter and ream out the existing guides, however,
you need a non standard reamer in order to achieve the correct valve stem
clearance.
The rockerbox joint behind the distributor is a source of leaks if not
fitted correctly, the safest way to do this is to fit the back section first
pushing it to the centre of the engine as you tighten the screws. The centre joint
should be fitted with the help of a jointing compound, and the front cover
pushed to the centre of the engine while the screws are tightened. This should
give you an oil tight joint, but if the gaskets are new retighten them as
they will copmpress with time.
My regards,
Bellerophon
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