Originally Posted by Commando C2
Good info thanks. Will see how the carbs look.
I have some spare coils from my other engine that is running sweet so might swap them out. Going to add additional earth strap between coils too.
I did pull the plug lead off number 1, then start it and it felt the lead had a spark, then did same with other 2 so if one was down and one taken off it surely wouldn't start on one cylinder.?!
I think its not coil related as I was getting 40 mph out of it once it got planing....a duff coil normally shows up at top revs.
if you can try taking the spark plug boots off while it's running, makes it easier to tell if it's firing on that cylinder, just be careful of shocks
My tohatsu amazingly would run on 1 cylinder, not too happily of course...
When I had that coil issue, it was intermittent, sometimes at WOT the dodgy coil would suddenly come to life. With the aftermarket coils I've got now the only issue I had was a corroded earth, just needed cleaning up with sandpaper and then some vaseline.
Saying that the other weak link on a tohatsu 50 is the fuel pump, again I've replaced mine with an aftermarket part from a jetski. Original required 5 rebuilds in one summer, poor quality part and that's with 2 fuel filters