Catalina - Capri - 25s International Assocaition Logo(2006)  
Assn Members Area · Join
h.jpg Home.
a.jpg Association Forum
s.jpg Ships Store
c.jpg Cruising
r.jpg Racing
t.jpg Technical Tips
g.jpg Photo Gallery - New
o.jpg Boat Search - Updated
m.jpg Manuals & Brochures
3rdrpt.jpg Swap Meet
l.jpg Links
f.jpg Officer Flag Line & Staff
b.jpg Bylaws & Constitution
 
1.jpg Members Area
1.jpg Join the Association
 
Notice:
The advice given on this site is based upon individual or quoted experience, yours may differ.
The Officers, Staff and members of this site only provide information based upon the concept that anyone utilizing this information does so at their own risk and holds harmless all contributors to this site.
 
Association Forum
Association Forum
Home | Profile | Register | Active Topics | Forum Users | Search | FAQ
Username:
 Password:
Save Password
Forgot your Password?

 All Forums
 Catalina/Capri 25/250 Sailor's Forums
 Catalina 250 Specific Forum
 9.9 Engine problems		  New Topic  Topic Locked
 Printer Friendly
Author Previous Topic Topic Next Topic  

pa-sailor
1st Mate

Member Avatar

USA
67 Posts
Initially Posted - 05/18/2013 :  17:30:44  Show Profile
My 9.9 Honda outboard seemed to run fine last year and ran well after
oil/filter/gear oil change this winter in garage. After launching boat
last week however, I could not get max speed. Normally under full power
my 250WK hits about 6 kts, I now only get about 4.3 kts with noticable
vibrations. I welcome any ideas.
Edited by - on

djbano
1st Mate

Members Avatar

67 Posts
Response Posted - 05/18/2013 :  18:34:17  Show Profile  Visit djbano's Homepage
Replace both plugs. You might be running on 1 cyl.
Edited by - on
Go to Top of Page

Tradewind
Admiral

Members Avatar

USA
531 Posts
Response Posted - 05/18/2013 :  19:10:13  Show Profile
Had similar problem last year, changed plugs and ran fine.
Edited by - on
Go to Top of Page

WindDancer
1st Mate

Members Avatar

USA
34 Posts
Response Posted - 06/12/2013 :  18:27:33  Show Profile
I have a Nissan 9.8 and I have had a similar problems. What I found out is even with fuel treatment today's gasoline is horrible. I changed the filter, plugs, and fuel to no avail. So I pulled the carburetor and rebuilt it. I found significant corrosion inside. After a good soak in carb cleaner, no more trouble. I always run the fuel out of the engine. This last batch of fuel was only 4-5 months old with a stabilizer in it. Now I will only keep the fuel for 2-3 months.

Hope this helps

Bruce
Edited by - on
Go to Top of Page

Dave Brown
Navigator

Members Avatar

USA
174 Posts
Response Posted - 06/15/2013 :  07:46:19  Show Profile
Sir, Everyone does things a little diff.
As for my motors, I add stable to the gas a week be for I pull out,
Run the motor for a few sails, then run the motor DRY before I pull it out.
Then burn the left over gas in the lawnmower. And start with new gas in the spring. Also, some times the gas one gets from the "lake" is not that clean.
I always take it from home.
Good luck.
Edited by - on
Go to Top of Page

TakeFive
Master Marine Consultant

Members Avatar

2272 Posts
Response Posted - 06/15/2013 :  16:42:52  Show Profile
I'm interested in hearing how pa-sailor resolved his issue.

I've never had a problem, even with ethanol gas.

The biggest problem with E10 is that it forms acids that can corrode the motor. To avoid this, I keep my tank full, and keep the vent closed when not in use. This prevents outside air from bringing moisture into the gas. I also add Sta-bil as soon as I put in new gas. Its anti-oxidants can prevent the chemical reaction that forms the acid. Those two preventative measures work for me.

I also burn the gas out of the carb every time I use the boat. If the gas forms 10% varnish over time, my feeling is the less gas the less varnish. I'd rather have air in there than gas/acid/varnish. I realize that others may disagree with this, but it has always worked for me.

In addition to that, I siphon the gas into my car every 2 months and start over with fresh gas. I won't put it in the mower, because my gas consumption of my mower is just as slow as my outboard. I put it in the car and burn it off in a week.
Edited by - TakeFive on 06/15/2013 16:43:05
Go to Top of Page

cat25
Navigator

Members Avatar

USA
140 Posts
Response Posted - 06/16/2013 :  06:46:44  Show Profile
I have a 2002 Honda 9.9 which I use pri-g gas treatment. The past 10 years were trouble free of gas problems. Many fisherman that I know told me to use pri-g. Ken.
Edited by - on
Go to Top of Page
  Previous Topic Topic Next Topic  
 New Topic  Topic Locked
 Printer Friendly
Jump To:
Association Forum © since 1999 Catalina Capri 25s International Association Go To Top Of Page
Powered By: Snitz Forums 2000 Version 3.4.06
Notice: The advice given on this site is based upon individual or quoted experience, yours may differ.
The Officers, Staff and members of this site only provide information based upon the concept that anyone utilizing this information does so at their own risk and holds harmless all contributors to this site.