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3.0 litre mercruiser no spark

R

rodey

Contributing Member
iv a 3.0litre mercruiser here with the DDIS ignition system
engine has no spark ,
if i move the cam on the shift interrupter switch quickily in and out it will spark momenterly
iv disconected the black and green wire on this just to try rule that out but still noting,
if i tip the green white wire to a ground on the engine i get the same momentrly spark ,
any ideas were to look next , i do outboards but not done a lot with inboards just need to get this running,
thanks
 
The shift interupter provides a ground to the ign system to stall/stumble the motor to aid in coming out of gear only.
When activated it will kill the spark momentarily. When centered in the V notch the spark should return.
Try disconnecting the grey wire for the tach.
 
Bt Doctur said:
The shift interupter provides a ground to the ign system to stall/stumble the motor to aid in coming out of gear only.
When activated it will kill the spark momentarily. When centered in the V notch the spark should return.
Try disconnecting the grey wire for the tach.
Click to expand...

hi mate, ya iv tried disconnecting the tach, grey wire and still no change,
wonder is there a problem with the destributer module itself
 
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