1977 85hp Johnson Intermediate Starts

Hey guys, here again looking for some answers. Okay, two right cylinders not firing...no spark. Switched good pack to bad cylinder and still not firing..no spark.

Could the power pack assembly itself go bad?

This motor will run on certain days. Just sunday had it out fired up and ran great. Last monday wouldn't even fire till I brought it home and sat for a while..then fired. However, each time it did fire it would start on 3 cylinders it sounded like and then kicked in the final cylinder, after that would start each and every time..ughh.

Any help would be great.

Re: 1977 85hp Johnson Intermediate Starts

Weak ignition components tend to fail when they heat up to normal operating temps, as you are finding. I think you meant to say you switched the coil from one cylinder to the other since there is only one power pack on the engine. That's a good test. If that did not cure the problem, you are left with 3 failure possiblilites, the power pack, the stator or the timer base, all pretty expensive parts. Considering the expense of these items, it is prudent to do some troubeshooting to make sure you purchase only the parts you need. You will find a couple of good troubleshooting references: the original factory service manual, which you can buy from Ken Cook Co., in Milwaukee, or the CDI corp, which has some online information: http://www.cdielectronics.com/Support.aspx