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Posted By: TreeMutt Merc 20 EFI won't start - 04/28/24
2017 Mercury 20HP EFI Outboard

Ran good last year but sat for 7 months.

I changed the lubes/oil got a new fuel line/bulb.
Changed the plugs
Filled tank with new non ethanol

Battery cranks but engine won't kick on, I think it's not getting gas but I'm no expert.

Any suggestions would be appreciated

MAGA!
Posted By: horse1 Re: Merc 20 EFI won't start - 04/28/24
Any chance there's a foam air-cleaner in the hood that's plugged?
Same thing happened to my son. Turned out to be something called a stator.
Posted By: WTM45 Re: Merc 20 EFI won't start - 04/28/24
Plugs getting wet?
Posted By: dpd Re: Merc 20 EFI won't start - 04/28/24
Last time you ran it , did you use non ethanol fuel ? Is it getting fire ?
Posted By: Calvin Re: Merc 20 EFI won't start - 04/28/24
Make sure your kill switch isn’t flipped
Posted By: TreeMutt Re: Merc 20 EFI won't start - 04/28/24
Originally Posted by dpd
Last time you ran it , did you use non ethanol fuel ? Is it getting fire ?
Always non ethanol Spark plugs are brand new.
Posted By: JeffP Re: Merc 20 EFI won't start - 04/28/24
Originally Posted by Calvin
Make sure your kill switch isn’t flipped
^^^^^^^
Posted By: TreeMutt Re: Merc 20 EFI won't start - 04/28/24
Originally Posted by Calvin
Make sure your kill switch isn’t flipped

By flipped you mean came off. No it is attached...If I remember, when my kill switch was off the battery wouldn't crank at all. Might be wrong.
Posted By: steve4102 Re: Merc 20 EFI won't start - 04/28/24
Did you treat the fuel before you put it into storage.
Posted By: FishinHank Re: Merc 20 EFI won't start - 04/28/24
If the kill switch is engaged it will still turn over.
Posted By: Brazos Re: Merc 20 EFI won't start - 04/28/24
Cycle the kill switch half a dozen times.
Originally Posted by TreeMutt
Originally Posted by Calvin
Make sure your kill switch isn’t flipped

By flipped you mean came off. No it is attached...If I remember, when my kill switch was off the battery wouldn't crank at all. Might be wrong.

My dad has an older bass tracker…

The lanyard can be hooked to the switch, but it can be every so slightly pulled.. it won't crank..

Work it a couple times…
Posted By: Heym06 Re: Merc 20 EFI won't start - 04/28/24
No help here, when my Mercury started messing up, I traded it in on a Honda. I hate working on outboards!!
Posted By: Fubarski Re: Merc 20 EFI won't start - 04/28/24
Same as any engine.

Hit it with some ether, ta see if there's spark.

Then adjust.
Posted By: dpd Re: Merc 20 EFI won't start - 04/28/24
Just because the plugs are new doesn’t mean you have fire . Could be the coil . You need to test for fire .
Posted By: TreeMutt Re: Merc 20 EFI won't start - 04/28/24
Originally Posted by FishinHank
If the kill switch is engaged it will still turn over.

Well I get the dumb fisherman award for the day.. As big dave also said. The lanyard was on but the clip was loose and not fully engaged...

Hope thats it but I'm off the water now so try again soon.

Thanks a million for all your help...Tree

MAGA!
Posted By: FishinHank Re: Merc 20 EFI won't start - 04/28/24
Glad you got it worked out. Calvin said it too, haha
Originally Posted by TreeMutt
Originally Posted by FishinHank
If the kill switch is engaged it will still turn over.

Well I get the dumb fisherman award for the day.. As big dave also said. The lanyard was on but the clip was loose and not fully engaged...

Hope thats it but I'm off the water now so try again soon.

Thanks a million for all your help...Tree

MAGA!

Yep, that's a common one, and really frustrating for those who deal with it.
Posted By: wabigoon Re: Merc 20 EFI won't start - 04/28/24
Use that safety lanyard, a prop can kill/
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