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Just how badly is a small two stroke supposed to idle?

 
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Harry Krause1

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Since: Jan 19, 2004
Posts: 1797



(Msg. 1) Posted: Mon Aug 16, 2004 5:21 pm
Post subject: Re: Just how badly is a small two stroke supposed to idle? [Login to view extended thread Info.]
Archived from groups: rec>boats (more info?)

marbisiNsPm.RemoveThis@tampabay.rr.com wrote:
 > Greetings,
 >
 > I've never owned an outboard powered boat, but just purchased my first
 > one with a 40HP Mercury 2-stroke. At idle, the motor seems to idle
 > quite rough; so rough that my wife asked me if it was going to fall
 > off the boat!

 >
 > I know the smaller 2-strokes are notorious for idling roughly, but
 > just how rough is normal I don't know. The motor has less than 50
 > hours, and was checked thoroughly before I purchased the boat.
 >
 > Could the idle speed mixture be off, or should I just resign myself
 > that this is the way these things idle?
 >
 > Thanks!

It could well be the low-speed idle screw, or too much oil in the mix,
or a partially fouled sparkplug. Multi-cylinder two strokes these days
idle decently, though not as smoothly as four strokes. You need an
engine adjustment.

--
"There's an old saying in Tennessee - I know it's in Texas, probably in
Tennessee - that says, fool me once, shame on - shame on you. Fool me -
you can't get fooled again." -George W. Bush, Nashville, Tenn., Sept.
17, 2002

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marbisinspm

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Since: Jan 22, 2004
Posts: 25



(Msg. 2) Posted: Mon Aug 16, 2004 5:21 pm
Post subject: Just how badly is a small two stroke supposed to idle? [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)

Greetings,

I've never owned an outboard powered boat, but just purchased my first
one with a 40HP Mercury 2-stroke. At idle, the motor seems to idle
quite rough; so rough that my wife asked me if it was going to fall
off the boat!

I know the smaller 2-strokes are notorious for idling roughly, but
just how rough is normal I don't know. The motor has less than 50
hours, and was checked thoroughly before I purchased the boat.

Could the idle speed mixture be off, or should I just resign myself
that this is the way these things idle?

Thanks!

 >> Stay informed about: Just how badly is a small two stroke supposed to idle? 
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Netsock2

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Since: Aug 17, 2004
Posts: 85



(Msg. 3) Posted: Tue Aug 17, 2004 8:21 am
Post subject: Re: Just how badly is a small two stroke supposed to idle? [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)

wrote in message

 > Greetings,
 >
 > I've never owned an outboard powered boat, but just purchased my first
 > one with a 40HP Mercury 2-stroke. At idle, the motor seems to idle
 > quite rough; so rough that my wife asked me if it was going to fall
 > off the boat!
 >
 > I know the smaller 2-strokes are notorious for idling roughly, but
 > just how rough is normal I don't know. The motor has less than 50
 > hours, and was checked thoroughly before I purchased the boat.
 >
 > Could the idle speed mixture be off, or should I just resign myself
 > that this is the way these things idle?
 >
 > Thanks!

Do you have a tach? What RPM is it idling at?

--
-Netsock

"It's just about going fast...that's all..."
<a rel="nofollow" style='text-decoration: none;' href="http://home.insight.rr.com/cgreen/" target="_blank">http://home.insight.rr.com/cgreen/</a>
 >> Stay informed about: Just how badly is a small two stroke supposed to idle? 
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Rod McInnis

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Since: Oct 20, 2003
Posts: 304



(Msg. 4) Posted: Tue Aug 17, 2004 10:31 am
Post subject: Re: Just how badly is a small two stroke supposed to idle? [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)

wrote in message


 > I know the smaller 2-strokes are notorious for idling roughly, but
 > just how rough is normal I don't know. The motor has less than 50
 > hours, and was checked thoroughly before I purchased the boat.

Not that rough!

What 2-strokes are really notorious for is fouling sparkplugs. I would
change the plugs before I messed with any mixture adjustments.

Rod
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Cleesturtle

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Since: Aug 14, 2004
Posts: 23



(Msg. 5) Posted: Sat Aug 21, 2004 11:22 am
Post subject: Re: Just how badly is a small two stroke supposed to idle? [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)

On Mon, 16 Aug 2004 16:51:49 -0400, Harry Krause
wrote:


 >It could well be the low-speed idle screw, or too much oil in the mix,
 >or a partially fouled sparkplug. Multi-cylinder two strokes these days
 >idle decently, though not as smoothly as four strokes.

Wow, youre a friggen genius!

Do you have any other painfully obvious information to spew?

 > You need an
 >engine adjustment.

Thank for that wonderfull diagnosis you moron.

Do you have any idea how stupid you look?

Oh wait, of course not...youre not smart...
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marbisinspm

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Since: Jan 22, 2004
Posts: 25



(Msg. 6) Posted: Mon Aug 23, 2004 1:27 pm
Post subject: Re: Just how badly is a small two stroke supposed to idle? [Login to view extended thread Info.]
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On Tue, 17 Aug 2004 07:50:21 -0400, "Netsock" wrote:


 >Do you have a tach? What RPM is it idling at?

800RPM in gear........
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