hi guys new to this site from wales, i have a fzr 600 and a dt 50 field, the fault is on the dt 50 i have a spark when i have the plug placed in the plug cap and held to the engine block but the spark is not between the electrode i changed plug but still the same, i took the cap off there is a goo spark jumping to the ground, i changed the cap put the plug in and it is still not jumping across the electrode but is jumping from the thread of the plug

Don't take this the wrong way but try yet another plug. Cos it shouldn't do that, a plug that does is fct, simples.