Need help! 1989 50 HP 2 stroke Force on a 15 Ft. 89 Bayliner. First real boat. I turned it on one time after I purchased it. Installed the ear muffs. They got tangled with the prop. Didn't notice. I noticed it was not cranking at times then it did. I had engaged the gears and wanted to see the prop go. I may have revved it too fast and I saw some sparks out of the stator area. Then I noticed I had ruined my prop my muffs and cracked the starter upper holding bracket. I "think" it did start after that. So I replaced the broken starter upper bracket and purchased a new 27 series battery. My motor cranks strongly but does not even cough or tries to start. I have no spark. Motor started fine till these events took place. Both times we started it was with a car's battery and had to use a bit of starting fluid and it started fast and strong after that. Ok i now took apart the ignition system. discovered a burnt section on the stator but the conecting wire within the stator is simply burnt on the insulation part and wire is not broken, at least not visibly I got the triger and ghe two coils and the ignition module. but i need help in testing each device for continuity. where do i set my ohm refer at? i get different readings depending on the setting I put it on. One reading at a setting reads 00.00 but what does it mean I have everything out now. Please help. Desperately need help.
An engine needs three things to run: fuel, spark, air.
You say you have no spark: how did you test?
Before anything else--is the safety lanyard installed and is the gear shift in neutral?
To check spark, we are going to pull the spark plug, if the spark plug is wet, there is a good indication we ARE getting fuel.
If the plug is dry and we have spark, we are not getting fuel.
So to check the spark we need to pull the rubber cap off the spark plug and remove the plug from the engine. I am not going to get into plug reading as that will be a seperate article in itself. For the purpose of 2 stroke engine troubleshooting, we are going to keep the plug inspection simple.
Ok, so you have the spark plug out of the motor, if the business end of the spark plug is completely caked with black crud, do yourself a favor and get a new spark plug right away. With that said, if the plug looks wet, you are getting fuel. If it looks dry, well, don't panic yet. Either way, put the spark plug wire back on the plug and lay the business end of the plug on the head (just set the plug on the metal part of the engine near the hole you took it out of). What you are doing here is grounding the plug to the engine, as if it were installed in the engine, but you want to be able to see if the plug sparks when you turn the engine over.
The engine will be very easy to spin over with the spark plug out of the cylinder, spin the engine over by quickly kicking or pulling it, you want it to spin over fairly quickly, don't pull or kick it real slow. It may require a buddy so one of you can get your head down and look at the spark plug while the other spins the engine over. We are looking for a nice blue spark across the electrode of the spark plug. If you don't get spark, try a new spark plug before you do anything else, even if the plug looks "good" try a new one.
If you have spark and the plug was dry, move on to "Fuel"
If you have spark and the plug was wet, replace the spark plug and try starting the engine again with the choke off. If this doesn't work try with the throttle wide open as your engine may be flooded (too much fuel in the cylinder). When 2 stroke engine troubleshooting and the engine is flooded, you want to spin the engine over fast with the throttle wide open several times. You should start to hear it pop, just keep pulling or kicking and holding it wide open until it starts, then rev the engine a bit to clean it out and keep it running, then warm it up properly.
If you still don't have spark with a new spark plug, you have problems with your electrical system. I won't go into any more detail on that in this article but I plan to add these types of things to this website as I have time.