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Mate
Posts: 1
Registered: ‎03-30-2020

ETEC 40hp sporadic starting problems

My 2015 ETEC 40 tiller, always starts right up but periodically quits running after about 10 sec. or so at idle. It will not re-start, engine rolls over but no spark. I can disconnect all power from the neg side of battery, then re-attach and tighten, and she fires right up. I have cleaned the post and all cable ends on multiple occasions and my threaded connection is tight. This issue has happened several times now. I am careful not to advance/touch the throttle prior to turning the key. For some reason, it goes into a mode where there is no fire going to the plugs. Is this an EMM problem? Otherwise the motor performs flawlessly. Any ideas.

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Captain
Posts: 808
Registered: ‎08-20-2017

Re: ETEC 40hp sporadic starting problems

Check the gap on the top spark plug. If the gap looks normal then switch #1 and #2 spark plugs It is possible that a worn or bad spark plug can cause electro magnetic interference and cause the engine control computer (EMM) to shut down.