1980 115 hp evinrude troubles

[cbster]

my evinrude developed a new problem as you are going full throttle it seems like it drops a cylinder and then after awhile it will pick it back up. i have replaced two of the coils so i was thinking about replacing the other two coils and see if that fixes it. is there anything that someone else thinks the problem is?

 

[CharlieB]

Re: 1980 115 hp evinrude troubles

Rather than throw sometimes expensive electrical parts at it, get your hands on the CDI Troubleshooting Guide, a wise 19.95 investment, a DVA Meter, another wise investment, 85.95, and properly test the ignition components so you can narrow the problem down to the faulty component, THEN buy the right part.

 

[Walker]

Re: 1980 115 hp evinrude troubles

Your description does sound like you are dropping a coil. Remove all the coils and clean their grounding straps and clean the engine block where the grounding straps bolt on.

 

[ezeke]

Re: 1980 115 hp evinrude troubles

You can still download the CDI Troubleshooting guide, N/C.

http://cdielectronics.com/index.php?option=com_content&task=view&id=26&Itemid=34

Right mouse on "download" and "save target as".

It is a large pdf file, so be patient.

 

[tschamp20]

Re: 1980 115 hp evinrude troubles

hum lets see $50 for 2 new coils or $105 for expensive meters then pay for coils!???

 

[Walker]

Re: 1980 115 hp evinrude troubles

You already have 2 new coils so you don't need any equipment to test them and the other 2 coils. Just a matter of switching them around and see if the problem folloows a particular coil. You problem is getting the motor to act up so you can do a definitive spark test on a 4 cylinders.

 

[cbster]

Re: 1980 115 hp evinrude troubles

hum lets see $50 for 2 new coils or $105 for expensive meters then pay for coils!???

That's what I was thinking. I can get a new coil for 23.50 to replace a coil that is 27 years old. I think I will try that route first. but if that doesn't fix it I think I will just take it to the shop. Thanks to everyone Greg

 

[cbster]

Re: 1980 115 hp evinrude troubles

Well the two new coils didn't fix it so what should I try next or just take it to the shop Thanks Greg