All ideas appreciated! Running well when last used, and re-started without problem after six months of laying idle, but no attempt since. Very little fuel in tank and refreshed with new 5ltrs. Seemingly v high compression as will hardly turn over despite having a chunky battery jumped across. Spins like a top with plugs out, but increasingly loaded when plugs one by one replaced. Spark is apparent but perhaps nothing to burn as will not fire at all. No obvious petrol smell so I'm thinking that the injectors are not delivering. Might old fuel, evaporated off, leave them gummy? So far I've not touched the fuel distributor or injectors. Appreciate any thoughts anyone has?