Mercury Parts       Mercury Marine Parts
 
Mercury Marine Parts Forum Mercury Outboard Parts Discussion Forum Mercury Outboard Parts Boat Parts Mercury Outboard Parts Forum Outboard Motor Parts Contact Us
Mercury Parts Mercury
  #1 (permalink)  
Old 01-28-2005, 09:14 AM
Junior Member
 
Join Date: Jan 2005
Location: South
Posts: 1
Post

My Boat has sat in storage for approx. 4 years. Fuel was immediately emptied and new added. When on the water right after purchase, the engine would start fine, idle rough, and occasionally bog down near WOT. I changed props, installed new plugs and fuel filter. Problem seemed to be fixed, boat ran fine for couple of months. At WOT, 5500 rpm 52mph. Now problem has reoccured, but more severe. Cranks fine, idles very rough (motor kicks and knocks), bogs immediately, rarely gets on plane, catches up every so often and surges forward. I have very recently done the following: removed all 3 carbs and cleaned thoroughly, reinstalled with new gaskets, replaced most all of the fuel hoses/lines, new plugs. Same problem, maybe worse. Could be carb link & synch, but there has to be more to it. Any suggestions?
__________________
Flipper Magee
Reply With Quote
  #2 (permalink)  
Old 01-30-2005, 04:27 PM
TMD TMD is offline
Junior Member
 
Join Date: Jan 2005
Posts: 23
Post

Lets try a cyl drop test.

Without the engine running.
Disconnect a spark plug lead and ground it.
Start the engine and see if the engine runs differently.
Do this for all the cyls.
We are looking for the one that does not make a difference.

Also, the large ring that is under the flywheel...what color is it? <---Stator

TMD
Reply With Quote
Reply

Thread Tools
Display Modes

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 On
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
Why does my 20 hp merc run on only one cylinder? <Aaron77> Mercury Outboard Parts Forum 2 08-04-2010 12:53 AM
mercury cylinder head casting # 18419-C1 ? snickers Mercury Outboard Parts Forum 2 04-04-2007 09:11 AM
1972 65hp 3 cylinder Tayta Mercury Outboard Parts Forum 0 07-24-2006 09:22 PM
schematic for a 1995 40hp outboard clif12345 Mercury Outboard Parts Forum 1 04-17-2006 03:41 PM
99 merc 90hp 2 stroke CHRIS Mercury Outboard Parts Forum 1 05-02-2005 08:42 AM

All times are GMT -4. The time now is 01:25 AM.

Outboard Parts

Other Forums
Yamaha Parts
Suzuki Parts
Evinrude Parts
Johnson Parts
Honda Parts

Copyright 2000 - 2014, Outdoor Network LLC