(18-12-17, 01:56 PM)Lord_D link Wrote: Thanks @Stet.
No sweat!
(18-12-17, 01:56 PM)Lord_D link Wrote: However, the battery is not great, so need a new one anyway.
So long as the engine is cranking at normal full speed, the battery should not be the cause of the problem.
(18-12-17, 01:56 PM)Lord_D link Wrote: Need to get a can of brake cleaner - I've heard that will do
You never know what brake cleaner is. It could be CTC which does not burn.
(18-12-17, 01:56 PM)Lord_D link Wrote: Has anyone heard of tight exhaust valve clearances causing these kinds of problems?
Tight exhaust and/or inlet valve clearances can cause big problems but, from the symptoms that you describe, it is unlikely to be the root cause (in my opinion that is).