Same thing happened when I bought Turtle!
It idled rough when I bought it, enough that I thought a motor mount was bad, but when I went to pull the first plug to see what condition they were in, it was loose.Then I found out they were all loose, and that the only thing holding them in were the coil boots!
This is apparently a common occurrence in Insights, so I would recommend that everybody with a G1 Insight periodically check them.
__________________
|