I have a 1988 50hp force,I have no spark or interninted spark on no.1 cylinder.I have replaced flywheel,old one had

Hi Nathan,

How are you confirming that your dropping spark on the #1 cylinder? Are you using a timing light on it, or some other method?

--Jason

Nathan,

Your down to either a defective coil. (or poor connections on the coils wiring) or simply a bad spark plug. I would swap the plugs first, and see if the problem follows the plug or not. If not, then you know it's the coil not firing. Your getting plenty of voltage to it, so everything before the coil is fine. If it was a stator, trigger, or cdi box problem you would not get any voltage to the coil. (or excessively low voltage).

Thats what is going on here. In the future, when you work on outboard ignition system. Positive and negative are not always positive and negative. So if your using a DVA and don't like the voltages your seeing, simply swap the meter leads and see if voltage changes or not. In this case it did. That should wrap this up, but I do work for tips so I want to make sure you are happy with me before rating me. If you have another question on this feel free to fire away.

Thanks in advance,

Jason