Outboard not turning off (intermittent prob)

Hi all,

I,ve just noticed this lately that when I turn the key off, the outboard still runs for another few seconds before going off.  This is only intermittent as most times it will switch off straight away the way its meant to.

All OK with starting.

Yamaha 100HP 4 stroke 2006.

 

Thank you


Posts: 791

Date Joined: 05/12/09

Not sure with outboards, but

Sun, 2014-02-16 13:03

Not sure with outboards, but on the older cars that was usually a timing fault..

Jason P's picture

Posts: 521

Date Joined: 16/02/13

 Not usually common in fuel

Sun, 2014-02-16 13:08

 Not usually common in fuel injected models, but may have a slight leak on injectors causing whats called dieseling, where the engine can run without a spark but draw in fuel to continue running.

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 DM306

Posts: 5793

Date Joined: 18/01/12

Pretty unusual with an EFI

Sun, 2014-02-16 13:29

Pretty unusual with an EFI outboard as both fuel and spark should stop immediately? Possibly your key?

Try an experiment-instead of switching off with the key, pull out the stop lanyard and see if it does the same thing or not?

If it stops instantly as it should then your key may have a bit of salt/corrosion in it and not breaking the connection instantly.

In the older carby engines it was often due to a bit of glowing carbon and seeing as the carby keeps pushing fuel in as long as the engine sucks-it runs on.

Not sure if its possible with a modern EFI engine from that source?

 

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 Give a man a mask, and he'll show you his true face...

 

 

The older you get the more you realize that no one has a f++king clue what they're doing.

Everyone's just winging it.

 

Posts: 2

Date Joined: 13/05/10

Check electrical connection

Sun, 2014-02-16 16:32

Check electrical connection in motor

Has happened to me before, Plug was loose even started getting electric shock when touched key.

sounds too simple but worth a look

marble's picture

Posts: 775

Date Joined: 03/09/09

better than it not starting

Sun, 2014-02-16 21:10

better than it not starting ;-)

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PMY 25 Centre Console DF300 Suzuki

big blue's picture

Posts: 57

Date Joined: 25/03/10

 Firstly ... Is it carb of

Sun, 2014-02-16 21:29

 Firstly ... Is it carb of EFI right on the change over about that time

does it run/idle normally when u turn the key off & for how long?

have you had it serviced or looked at recently or done any repairs mods ?

is it still running & starting as normal or has that changed as we'll?