Cruisers Forum
 


Join CruisersForum Today

Reply
 
Thread Tools Search this Thread Rate Thread Display Modes
Old 21-10-2018, 14:33   #1
Registered User
 
ahnutts!'s Avatar

Join Date: Nov 2008
Location: Van Isle
Boat: 40' Northstar Ketch
Posts: 130
Outboard question

Hey everybody! I got a 6hp mercury 4 stroke that's about a 2008ish. It's idling high with the idle screw backed off all the way, lacking power and pulsing if that makes sense. Last week I took the carb apart and cleaned it, float and needle valve appear to be working normally. Cleaned out the gas tank and filled with brand new Pemex Magna. I don't think they're adding ethanol here, at least I've never smelled it. So what gives? I've never had this much trouble getting this little motor to do what it's supposed to.

Cheers
ahnutts! is offline   Reply With Quote
Old 21-10-2018, 15:24   #2
Registered User
 
thomm225's Avatar

Join Date: Aug 2011
Boat: Bristol 27
Posts: 5,244
Re: Outboard question

You may have to adjust the screws on the control wires...…..
thomm225 is offline   Reply With Quote
Old 21-10-2018, 15:35   #3
Registered User
 
Fiveslide's Avatar

Join Date: Dec 2009
Boat: JBW club 420, MFG Bandit, Snark
Posts: 871
Re: Outboard question

Leak somewhere between the carb and the cylinder letting air in, thereby not metering the air to fuel ratio and causing the high idle and erratic behavior. You can test for this by spraying starting fluid near the intake and see if that make the rpms go up.

You may have caused this when you rebuilt the carb. Don't worry, it's a common mistake.
__________________
I love big boats and I can not lie.
Fiveslide is offline   Reply With Quote
Reply

Tags
outboard

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes Rate This Thread
Rate This Thread:

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Mercury outboard book? Or just outboard? Jack Long The Library 2 17-09-2008 08:33



Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -7. The time now is 22:35.


Google+
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2019, vBulletin Solutions, Inc.
Social Knowledge Networks
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2019, vBulletin Solutions, Inc.

ShowCase vBulletin Plugins by Drive Thru Online, Inc.