Reply
 
Thread Tools Search this Thread Display Modes
 
Old 09-18-2014, 12:26 PM   #1
Lt. Commander
 
Join Date: Jan 2014
Posts: 170
Default carberator choke question

1998 maxum 2800 scr
7.4 mercruiser, bravo 3

This past week I noticed a lot of black smoke coming out the exhaust. I did some research and found that it is often due to a rich carburetor.
I adjusted the mixture screws and all seems fine for that day but next time out the black smoke was back again.
While the engine was running and warmed up I opened up the carb cover and found the choke in a 3/4" closed position. I opened it to fully open position by hand and the idle increased quiet a bit.
My thought was to warm the engine and then loose the 3 screws that hold the choke spring cover on. Then I could slowly turn the choke housing until the choke is fully open.
I can't find and info on how to adjust this online.
any thoughts would be appreciated.
thanks!
Mark
__________________

Baby Blue is offline   Reply With Quote
Old 09-18-2014, 04:11 PM   #2
Admiral
 
mmwjr's Avatar
 
Join Date: Feb 2012
Location: Perry Hall, Maryland
Posts: 5,400
Default

Mark you have the correct proceedure. Typically it is set when cold and adjusting it so it is open about a pencil width. Then need to verify it full open when warmed up.
__________________

__________________
Mike
mmwjr is offline   Reply With Quote
Old 09-19-2014, 02:59 PM   #3
Lt. Commander
 
Join Date: Jan 2014
Posts: 170
Default

all fixed up and much better.. thanks for the info!
BB>
Baby Blue is offline   Reply With Quote
Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search
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 Off
Pingbacks are Off
Refbacks are Off


Powered by vBadvanced CMPS v3.2.3

All times are GMT. The time now is 01:31 AM.


Powered by vBulletin® Version 3.8.8 Beta 4
Copyright ©2000 - 2017, vBulletin Solutions, Inc.