Ruin Coil Ungrounded Plugs???

[walk-on]

I just replaced the stator on my 90 HP Force motor and I found a bad coil after the repair. The motor ran great before it died so I have a feeling I must have ruined the coil somehow during my seemingly endless testing of the electrical system.

My question is: Can you ruin the coil if you turn over engine with the spark plug cables not attached to anything?

 

[roscoe]

Re: Ruin Coil Ungrounded Plugs???

yes

 

[bertthedefender]

Re: Ruin Coil Ungrounded Plugs???

Does it ruin them right away, or is it through prolonged cranking/running?

 

[walk-on]

Re: Ruin Coil Ungrounded Plugs???

The funny thing is that the resistance test passed fine on all three coils, however I didn't have any spark on the #2 coil. After I swapped coils I verified it was the coil that was bad.

FYI - I replaced the coil with Sierra aftermarket and initially it didn't fit right so I had to remove the rubber cover and turn it around to get it to fit right. The cover is not the same on both sides...