I've got a missfire on cylinders 1 & 4, it is firing just very weak and there is a good strong spark. the pistons on these cylinders look very washed & clean. I also noticed a bit of water bubbling out of the the loose exhaust manifold near cylinder 1. However I haven't lost any water and it has never blown any out when hot.
Could it be a failed carb gasket or inlet manifold gasket cause this as there are water ways in the inlet manifold and carb?
I'm stumped

Scott