Merc outboard won't idle - SailNet Community

   Search Sailnet:

 forums  store  


Quick Menu
Forums           
Articles          
Galleries        
Boat Reviews  
Classifieds     
Search SailNet 
Boat Search (new)

Shop the
SailNet Store
Anchor Locker
Boatbuilding & Repair
Charts
Clothing
Electrical
Electronics
Engine
Hatches and Portlights
Interior And Galley
Maintenance
Marine Electronics
Navigation
Other Items
Plumbing and Pumps
Rigging
Safety
Sailing Hardware
Trailer & Watersports
Clearance Items

Advertise Here






Go Back   SailNet Community > On Board > Gear & Maintenance
 Not a Member? 
  #1  
Old 05-20-2008
JewelledJester's Avatar
Rail Meat
 
Join Date: Nov 2007
Location: Valparaiso, IN
Posts: 29
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 0
JewelledJester is on a distinguished road
Merc outboard won't idle

I have a merc 9.9 outboard that won't stay running without hitting the primer button on the carb. Has fresh gas and new plugs. Possible debris in carb? Any help would be nice, want to put in saturday.
Reply With Quote Share with Facebook
  #2  
Old 05-20-2008
artbyjody's Avatar
Senior Member
 
Join Date: Jan 2008
Location: Bellingham, PNW
Posts: 3,146
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 10
artbyjody is just really nice artbyjody is just really nice artbyjody is just really nice artbyjody is just really nice
Quote:
Originally Posted by JewelledJester View Post
I have a merc 9.9 outboard that won't stay running without hitting the primer button on the carb. Has fresh gas and new plugs. Possible debris in carb? Any help would be nice, want to put in saturday.
I found on mine that idling when it hasn't been run for a long time it would do the same (it was brand new btw). I ended up keeping in neutral and increasing throttle up halfway between idle and full boar, let it run like that for three to five minutes (primer turned off), then bring it back down into idle worked well.
__________________
-- Jody

S/V "
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
" -
1983, Barberis Show 38! or
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.



To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.







Reply With Quote Share with Facebook
  #3  
Old 05-21-2008
Omatako's Avatar
Senior Member
 
Join Date: Sep 2003
Location: Auckland New Zealand
Posts: 2,369
Thanks: 0
Thanked 25 Times in 22 Posts
Rep Power: 11
Omatako will become famous soon enough
You possibly have some oil congealed in the idle circuit from prologed non-use.

Try running the engine at about half throttle then block the intake with your hand until the engine just about dies. Remove your hand in time to let the engine run up again. This will draw any cr@p in the idle circuit thru and clear the sinuses so to speak.

If this works, try running the engine dry when yu're done using it, that will stop oil blocking the jets once the fuel has evaporated off.
Reply With Quote Share with Facebook
  #4  
Old 05-21-2008
timebandit's Avatar
Senior Member
 
Join Date: Sep 2002
Posts: 928
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 12
timebandit is on a distinguished road
I might try inducing a SEAFOAM mix via a seprarate fuel line and a small tank.

If that does not work, pull the carb and clean.
Reply With Quote Share with Facebook
  #5  
Old 05-21-2008
Member
 
Join Date: May 2003
Location: Shepherd, MI
Posts: 43
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 0
docbob5707 is on a distinguished road
Had the same problem with my Mercury 9.9 Big Foot. Ended up rebuilding and cleaning out the little orfices in the carb. (Real simple job BTW).
__________________
"Doc" Bob
Au Gres - Saginaw Bay - Lake Huron
s/v "Crysta"
77 Chrysler 26
Reply With Quote Share with Facebook
Reply


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools

 
Posting Rules
You may post new threads
You may post replies
You may post attachments
You may edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On


Similar Threads
Thread Thread Starter Forum Replies Last Post
Atomic 4 is 4 lovers agent4change Gear & Maintenance 11 08-07-2011 05:14 PM
Outboard motor controls waltzingmatilda Gear & Maintenance 3 05-05-2010 09:08 AM
Opinions on auxillary outboard motor kwaltersmi Gear & Maintenance 6 10-08-2007 10:56 PM
Caring for the Cruising Outboard Doreen Gounard Gear and Maintenance Articles 0 04-22-2003 08:00 PM
Help with Mariner Outboard kokerj Gear & Maintenance 0 04-02-2001 12:28 PM


All times are GMT -4. The time now is 02:35 AM.

Add to My Yahoo!         
Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
SEO by vBSEO 3.6.1
(c) Marine.com LLC 2000-2012