Coil and power pack replacement

[Kellyz2]

Hi,<br />Newbie with a basic question. <br />My 1986 Johnson 70HP is still running on the original coils and power pack. Is there a need or advantage in replacing these items. Engine runs well, but have had occasional episodes of power loss (lose one Cyl). <br /><br />Thanks ,<br /><br />Mike

 

[ledgefinder]

Re: Coil and power pack replacement

I'd do some diagnostic work first. Could also be the sensor coils in the timer base...

 

[Kellyz2]

Re: Coil and power pack replacement

Ledgfinder, Thanks for the reply. How do you check for a bad sensor coil? Sounds like a major job. Isn't that located under the fly wheel?<br /><br />Any advice is greatly appreciated.<br /><br />Thanks,<br /><br />Mike

 

[Solittle]

Re: Coil and power pack replacement

Mike - Me thinks it is time for you to get the OMC shop manual. Most service and repair on these motors are not a big deal even if you have not done it before and the manusls show you how.