Force 1985 85HP Tell Me Whats Going On

[lonzo@fnwusers.com]

I had no spark on number 1 but 2 and 3 both had good spark when tested. I change number 2 coil with number 1 and still no spark.At this point I took all three spark plug wires off the plugs and hook my tester up to check the CD mo dual and had my wife turn the motor over while I watched the tester.The motor turn over twice and fired right up and ran,can someone tell me how this motor ran on idle with no spark plug wires hooked up.

 

[roscoe]

Re: Force 1985 85HP Tell Me Whats Going On

Welcome to iboats.

I suspect there was a detonation under compression, which continued till you turned it off.

Often times will result in a 2 stroke "runaway", where the motor will rev up to wot (wide open throttle) and can only be shut off by stopping fuel flow or choking off the air supply.


http://forums.iboats.com/showthread.php?t=201842&highlight=runaway+engine

 

[Smokepole27]

Re: Force 1985 85HP Tell Me Whats Going On

Just wondering how did you test the spark on that cylinder? did you hold the spark plug to the motor? If so change your spark plug and try again?