No spark mercrusier 3.0

wearzy

Cadet
Joined
Jul 3, 2021
Messages
13
1988 mercrusier 3.0 alpha one drive.
No spark from coil, tested coil and was good.
Replaced with flamethrower 3ohm. With new Pertronix 1142. New distributor cap, rotor, and plugs. Only 8v at coil. I have purple w yellow trace solid purple red wire from Pentatonix all on +
Grey and black on -
.It cranks but no fire. I've removed grey from tach and still no change. Checked shift interrupter it works as it should. previous owner jumped kill switch lanyard.


Any help much appreciated.
 
Last edited:

alldodge

Moderator
Staff member
Joined
Mar 8, 2009
Messages
42,064
To use Pertronix you have to not use the original resistance wire feeding the coil. Disconnect it and tape the end so it doesn't ground out

Fine wire feeding the electric choke and tap of that with a new wire to coil +. This should give you full 12V
 

dubs283

Vice Admiral
Joined
Jul 27, 2005
Messages
5,322
Did the flamy thrower thing ignition parts come with instructions?
 
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