Older engines ran on thicker oil so it may pay to change it ,they were prone to breaking valves springs but this would give a miss and its worth checking the cam lobes for wear.
If I remember rightly it ran ok before its last rights so possibly its oil related.
Edit see below
Last edited by flyerncle : 8th July 2010 at 08:02 PM.
Reason: 1,000 posts !
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