1980--85 hp Evinrude Ignition help please

[Rapio]

Out of the hole and WOT like a slug. Compression test all 125+ Spark test 3 good over 3/8 gap. Lower left no spark, but didn't narrow gap as considered 3/8 min.
Have Evinrude Service Manual. Checked ignition coil with ohmmeter. Seems to meet specs and compares to left upper. Also off engine / on bench tested both left and right power packs with ohmmeter They seem to be within specs and are the same. I don't think the high tension lead to spark plug is leaking to ground. Didn't see or hear anything.
Any info. to help solve this one cylinder problem would be much appreciated.

 

[boobie]

The cylinder with no spark has either a bad coil, pack or timer base.

 

[1983 ercoa 21']

Make sure that the coil not firing has a good ground. More than likely as stated above but I have seen a bad ground drive one crazy.

 

[1983 ercoa 21']

You can move the high tension wire to the closest coil and repeat spark test.

 

[Bosunsmate]

if this is a two pack model you can swap the packs over too

 

[Rapio]

The high tension lead is part of the coil. I'll swap bottom and top coils tomorrow and see if problem follows. Then the power pack. I cleaned and scrunched the coil ground previously. Thanks to all.

 

[1983 ercoa 21']

You can go to cdielectronics.com for testing of your timer base and stator

 

[Rapio]

I wont move or reinstall anything until I check timer base

 

[emdsapmgr]

Common for the bottom plugs to short to ground due to close proximity to the two engine cowling latches.