Bill Krummel
New member
I have a mercury 1150 that I got to run a little last summer after replacing the trigger inside the distributor, this season come around and im ready to put it on a boat and have some fun but when i go to link and sync it i have no spark again. I go through all the usually diagnosis and find that the trigger is fine but spark off the coil wire seems weak. It wont jump more than an 1/8 gap and its hard to get it to do that. My question is is it just a bad coil or is the signal from the switchbox weak? Is there a way to be sure its a full 12 volts getting to the coil?