looper no spark port side under 1800rpm?

[Machinist76]

94 Venom 200. What in the world can cause spark loss all three port side cylinders under approx 1800 rpm.
I can hear and feel it. I'm so confident they ain't firing I will pull plug wires by hand with it running, zero change in horrible rough idle.

If engine can get above 1800 or so it will plane off and run 60 mph

Under huge load/hot sometime it won't take throttle to load on trailer end of the day...

Ideas?

[25two.stroke]

Bad stator

[Machinist76]

Stator is something I haven't changed, guess it's next..

[25two.stroke]

Easy to test at cranking speed. If one side of it is weaker or not there then its that easy.
Test it with a DVA on the 400v scale.

[hydra-sports]

did you look at the shift interupter switch, or temperature sensor switch maybe going into S.L.O.W. mode. how is temp when this happens?

[Machinist76]

I will test it and see. Makes sense. I own a DVA, Haven't yet used it
Shift interuptor disconnected, tan wires disconnected. White black grounded to end quick start t.
Temp sensor bad both sides... Motor isn't hot. No spark even cold start
Have I mentioned I hate electronics....

[racer]

Check your connections from stator to pack. Not likely a stator if it does run up as OMC does not have a low and high speed side to the stator, should have a minimum of 130 volts at crank speed of 250 rpm. Verify no loose magnets on flywheel. Also make sure you don't have any ground on either black yellow wire going into pack. I have seen 12 volts on one of the black yellow a couple times when running which will cause a spark issue.

[Machinist76]

Appreciate ya Al. I'll do just that. Thanks again for that valuable info. That gives me something new to check

[Machinist76]

FIXED! I hope this helps someone in the future.

It was totally the 2 pin Amphenol connector for the brown/yel wire from stator. Blue plastic brittle (hot) and bad, dirty, dry connection. Corrected that and she runs on all 6 all the time now!

That guy in NC is a wealth of info!

[powerabout]

I will test it and see. Makes sense. I own a DVA, Haven't yet used it
Shift interuptor disconnected, tan wires disconnected. White black grounded to end quick start t.
Temp sensor bad both sides... Motor isn't hot. No spark even cold start
Have I mentioned I hate electronics....

good news its fixed
Where did you disconnect the shift cable, down at the switch switch? Make sure thats well insulated.