1956 Lark Weak Spark?

[dogclinic]

Hi. I put an in-line spark tester to my 1956 Evinrude Lark 30hp and the light on the tester flashes red, which seems to indicate weak spark. It has a new points and condenser — where else should I be looking to trace this problem?
Thanks

 

[F_R]

Not familiar with your spark tester, but I wouldn't put much faith in the diagnosis.

How do the coils look? If they aren't all dried-up looking or cracked, you might be good to go. See if the sparks will jump a 5/16" pointed open air gap.

 

[dogclinic]

Just ordered an open air tester — thanks

 

[oldboat1]

But need to look at the coils to check condition, as mentioned. Cracked casings mean they need to be replaced. Believe there is an inspection port under an aluminum cover on your flywheel; otherwise pull the flywheel with a harmonic balancer puller, and have a look at the coils.