The engine first of all sounded like it was only running on 3 cyl. i checked the plug holes and 4 n 3 were full of water. Cleared this water and a squirt of wd40 here n there it sounded sweet and as it should.
Took it for a blast, got back and switched it off. Came to it 5mins later n it sounded **** again.
Any idea what i can check/clean to solve or could the leads be damp.