Evenrude only runs wide open
 

HI

1986 4HP, runs great wide open but will not run slow unless the choke is
partially pulled. This has been a problem that has slowly developed over the
season. I used to be able to use the mixture screw and get it to run at
troll speed. That no longer can be adjusted enough. Any ideas on the cause?

thanks

Paul

On Sun, 15 Aug 2004 21:23:22 GMT, "calhoun"
wrote:

HI

1986 4HP, runs great wide open but will not run slow unless the choke is
partially pulled. This has been a problem that has slowly developed over the
season. I used to be able to use the mixture screw and get it to run at
troll speed. That no longer can be adjusted enough. Any ideas on the cause?

thanks

Paul


Gumming up of the carb idle jets? Just a thought. Have you tried a
lot of gumout?

Had a V8 catch me like that once.



Regards
John S

Rebuild the carb.

--
Tony
my boats at http://t.thomas.home.mchsi.com

"calhoun" wrote in message
...
HI

1986 4HP, runs great wide open but will not run slow unless the choke is
partially pulled. This has been a problem that has slowly developed over
the
season. I used to be able to use the mixture screw and get it to run at
troll speed. That no longer can be adjusted enough. Any ideas on the
cause?

thanks

Paul

HI

1986 4HP, runs great wide open but will not run slow unless the choke is
partially pulled. This has been a problem that has slowly developed over the
season. I used to be able to use the mixture screw and get it to run at
troll speed. That no longer can be adjusted enough. Any ideas on the cause?

thanks

Paul


Your Idle/slow spped circut in the carb is either gummed up OR your mixture
needle is worn down and is now letting to much air by. pull the needle out look
at the tip.. does it have a grove in it.. does it even have a sharp point
anymore? These carbs are really easy to pull and clean out don't be afraid of
it really isn't much to them. But if you have the Black Thumb of death on
fixing mechanical things. i leave it be and have a boat mechanic fix it.. and
if it takes one more then a hour to fix. they are a idiot.