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| Boat Fishing & Boating A new forum at Striped-Bass.com for those fishing from boats and for boating in general |
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07-10-2009, 12:39 PM
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#1
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Registered User
Join Date: May 2009
Posts: 49
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Help: Boat cuts off at low RPMs
I have an older Yami 2 stoke and it runs great all day until I pull into my marina and then the engine cuts right before dock everytime. The wierd thing is that I can run to the fishing spot and then troll at low RPMs with no problems. Any help or ideas would be greatly appreciated. Thanks
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07-10-2009, 04:14 PM
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#2
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Certifiable Intertidal Anguiologist
Join Date: Feb 2000
Location: Somewhere between OOB & west of Watch Hill
Posts: 35,270
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How long are you idling/low RPM before you get to your slip/dock?
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~Fix the Bait~ ~Pogies Forever~
Striped Bass Fishing - All Stripers
Kobayashi Maru Election - there is no way to win.
Apocalypse is Coming:
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07-11-2009, 06:13 AM
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#3
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Take a Kid Fishing
Join Date: Sep 2003
Posts: 681
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It could be the throtel postion sensor... how old of an engine is it... this happens a on the hpdi's and 4 strokes... Give me the year and I will check
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AMAMC.COM
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07-11-2009, 08:16 AM
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#4
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Registered User
Join Date: Jan 2009
Posts: 1,044
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That's exactly what my 1987 Merc (175) has been doing lately. I am going to adjust the idle up a bit today and see if it helps. Usually happens when pulling in or out and I am going to or from neutral to either reverse or forward. It is rare on the outbound but has happened, and lately almost always stalls on inbound marina. I'm heading out soon and will try the idle and post back here how it went.
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07-11-2009, 09:03 AM
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#5
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"Fishbucket"
Join Date: Feb 2004
Location: Bahston Hahbah
Posts: 6,588
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is there a cut out switch on the shift linkage that disrupts the ingition?
I know inboards have this so it doesn't slam into gear.
I forget on outboards?
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07-11-2009, 02:25 PM
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#6
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Registered User
Join Date: May 2009
Posts: 49
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Its a 1989 V6 200. Its runs at low RPMs for about 200 yards. Thanks for the help
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07-15-2009, 01:52 PM
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#7
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Very Grumpy bay man
Join Date: Nov 2003
Location: Rhode Island
Posts: 10,824
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It's the guy driving the boat!!! (Chris is my nephew!)
Last edited by piemma; 07-15-2009 at 02:11 PM..
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No boat, back in the suds.  
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07-15-2009, 06:14 PM
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#8
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Registered User
Join Date: Mar 2007
Location: Franklin Ma
Posts: 402
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You guys all using the Star Brite fuel additive for the Ethanol fuel?
My 70HP Johnson was stalling out later in the day at low rpm's as well. Went to the Star Brite Enzyme fuel additive and engine has run great all year.
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07-15-2009, 07:23 PM
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#9
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Registered User
Join Date: Jun 2007
Location: Hull, MA
Posts: 512
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you probably need to clean and adjust your carbs, those older yamaha's can be touchy on the low speed adjustment, just did a set the other day, check the small jets in the bowl, I usually blow them out, run some thin mechanics wire through them then spray crc using the red tube through to make sure they are clear
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07-15-2009, 07:48 PM
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#10
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Hardcore Equipment Tester
Join Date: Mar 2001
Location: Abington, MA
Posts: 6,234
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My buddy had the same problem, and it was water in the fuel. Like others have said, clean the bowls on the carb, get some fresh gas after you empty out your tank, and use an additive. I have been using the Evinrude/Johnson fuel conditioner since day 1 with ethanol 4 years ago and so far no problems.
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Bent Rods and Screaming Reels!
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