Johnson 115 V4 Faststrike (1995) No spark

[paul worsley]

Help !!! My Johnson 115 V4 Faststrike (1995) Has no spark at plugs. A boat yard in Portland has had it for 3 weeks and cannot fix it. kill circuit ok, as well as charging system (stators). new CDI pack fitted (no change - so old one put back on). Will spark if Yellow/Red wire from main engine loom is disconnected.
Any help welcome.

[pro-rig]

earth problem !

[paul worsley]

OK - Thanks. Actually took boat down to South Coast Marine in Christchurch today, so will pass on your info - Thanks very much

[paul worsley]

Engine now running ! Turned out to be a faulty optical ignition sensor. Thanks to South Coast Outboards.