Mercruiser Alpha One 3.0 cranks but no fire

holterpa321

Recruit
Joined
Jun 15, 2020
Messages
2
I have a that can crank over but has no spark. Only 5v at the pos terminal of the ignition coil. I have 12v at the stater and at the red wire on the solenoid or relay. The on that is not attached to the stater. Coil and distributor components have be replaced and the starter is only a year old.
 

Scott Danforth

Grumpy Vintage Moderator still playing with boats
Staff member
Joined
Jul 23, 2011
Messages
51,357
my guess is you have points and you need to service them
 

achris

More fish than mountain goat
Joined
May 19, 2004
Messages
27,468
Turn the engine until the points are open. Then take a wire and from the coil negative and touch it to ground. Get a spark? Your points need cleaning. No spark, you have a power problem. Check voltage at the key switch and at the coil positive.

Chris......
 
Top