Evinrude 2hp - loss of spark

[ollyit]

Had my engine running fine, then it never fired again, wasnt getting a spark so took over cover, fly wheel, cleaned up contact breaker and inspected coil, the coil has a entry point where the HT lead goes in, I was pleased to see it had just come loose a bit and need fully pushing home again, I was suprised that it just loosing sits in there, is there a better way of fixing it in there? Pic might explaint hings better, it now has a spark again, correctly gapped but still wouldnt go, I probably flooded it and fuel was peeing out of everywhere! - I dont think theres anything else is there, theres no kill cord or anything and it ran before

Prior to test, I cleaned out the tank, dried out, new fuel line, new plug, took carb out and cleaned throughly with carb cleaner, and all jets and needles

any thoughts guys?

[Nos4r2]

What does the engine look like when together? Guessing it's one of these:-



If so, there's a fibre washer fits round the main jet that doesn't like the additives in fuel these days. It may be leaking.If it is, you can (with extreme care) make a replacement out of the right size fuel hose. Both edges have to be flat as it's a gasket face.


Cut the HT lead back by a few mm at the join to the coil and push the spike into virgin lead or it'l keep coming out.Prob worth using vaseline or a non conductive grease round the join afterwards or you'll find your arm tingling somewhat if it gets damp.

[ollyit]

Hi mate, yeah its just like that, single cylinder job, I'll snip the lead like u say, I've already had a small bolt off the thing, not nice at all!!

Im quite sure its not the coil as it was fine before and still produces a spark, maybe I havent done the flywheel up to the correct torque perhaps?

I tipped fuel in to the bore and put the plug (dry) back in, to see if it'd go just for a short while and it backfired a few times

[Nos4r2]

Originally Posted by ollyit

Hi mate, yeah its just like that, single cylinder job, I'll snip the lead like u say, I've already had a small bolt off the thing, not nice at all!!

Im quite sure its not the coil as it was fine before and still produces a spark, maybe I havent done the flywheel up to the correct torque perhaps?

I tipped fuel in to the bore and put the plug (dry) back in, to see if it'd go just for a short while and it backfired a few times

As long as you haven't lost the flywheel key and it doesn't wobble it should run (though torqueing it up correctly is essential).


Are there any cracks on the coil?

Did you take much off the points when you cleaned them and did you change the gap?

[ollyit]

the gapping was right at .20 and the wood ruff key was def there, perhaps I've over tightened!! I'll take apart and try again!

[Nos4r2]

What does that fibre washer in the carb look like? Overtightening isn't too much of an issue as long as you haven't stripped the thread.
I was thinking more if you'd undertorqued it and it came loose.

[ollyit]

yes mate, the fibre washer is all good, had it apart again at the weekend,

if the cam roller bit on the flywheel bolt wasnt put back in the right position do you think this would foul and timing and ignition? hence it not starting, I took it off to clean it - it does backfire ocasionally when pull starting it

[m chappelow]

Yes the cam may throw out the timing if its put on the wrong way around ,
How about the condenser ,eg bad connection or even faulty ,not often they go but company i worked for had a couple of small o,m,c,s,,,2 hp and 4 hp models in for repair ,,turned out in the end it was the condensers,,normally the points will look black if a condensers faulty but as is flywheel mag the currents low so hard to tell .
you say the woodruff key looked as if it was in place when the flywheel went back on ,some have a good habit of slipping out unless you could see it located for definate ,,fly wheel turning on the shaft will throw it out of timing and cause a back fire .