Electric Choke Adj
Printed From: CorrectCraftFan.com
Category: Repairs and Maintenance
Forum Name: Engine Repair
Forum Discription: Engine problems and solutions
URL: http://www.CorrectCraftFan.com/forum/forum_posts.asp?TID=2641
Printed Date: November-23-2024 at 7:32am
Topic: Electric Choke Adj
Posted By: M3Fan
Subject: Electric Choke Adj
Date Posted: October-22-2005 at 4:11pm
Hey all,
I searched for this but didn't find something specific enough with my limited knowledge in electric chokes. I just discovered my choke has been stuck all the way open for the past 3 years. Let's just say we do a fair amount of throttle jiggling to start it cold. I just figured that's how it was, that the elec. choke actually closed it electrically instead of opened electrically. Now I know better- a few wiggles and the plate now moves smoothly open and shut. With the ignition key turned, it takes about 30-60 sec to open fully (it is in the 40's today).
Now that I understand the basic operation, finally... my question is this- with no heat at all, completely cool, HOW CLOSED should the choke butterfly be? All the way closed? Or a tiny gap? Right now I have it set at a very tiny gap- approximately the second hash mark on the housing from the front (right) side. I have not tried starting it as it is rainy and cold today. I can't wait to see the difference the choke makes, but want to at least hit the ground running with the cold adjustment.
Oh, I forgot to mention- Holly 4160. 1990 SN.
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Replies:
Posted By: stang72
Date Posted: October-22-2005 at 5:44pm
In cooler weather You might want to close it as much as possible....without killing the engine! I close mine all the way...no gap but lightly closed (with a little play). When it's warm...I have a small gap!
You can take your finger and manually close or open it right after it fires ...see how it responds.
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stang
Face plants are not that funny when it's you face!
http://www.correctcraftfan.com/diaries/images/3720/photo1.jpg" rel="nofollow - The Super Air
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Posted By: 79nautique
Date Posted: October-23-2005 at 7:15am
I believe the choke should be completely closed so that the choke pulloff can create the small gap after it starts. After it's running there has to be a small gap about 1/8" which is the reason the choke pulloff is on the carb.
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http://www.correctcraftfan.com/diaries/details.asp?ID=756&sort=&pagenum=1&yrstart=1979&yrend=1979 - 79 nautique
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Posted By: M3Fan
Date Posted: October-23-2005 at 7:40am
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What is the choke pulloff? I noticed if I open the throttle all the way it bumps open a bit. Is that what you are talking about or is that something else? What is the correct startup sequence for an elec. choke engine? We usually give it two full pumps, then start cranking while feathering the throttle to keep her alive with the accel pump (since the choke has been inoperable).
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Posted By: 79nautique
Date Posted: October-24-2005 at 7:47am
The choke pulloff is a vaccum port with a rod that attaches to the top butterfly and once there is engine vaccum it opens the choke slightly. You should only have to give it a full shot once to set the choke then you can start it and let it fast idle for a minute and your good to go.
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http://www.correctcraftfan.com/diaries/details.asp?ID=756&sort=&pagenum=1&yrstart=1979&yrend=1979 - 79 nautique
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Posted By: M3Fan
Date Posted: October-24-2005 at 4:03pm
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Thanks, appreciate the info. I'd like to think I know quite a bit about these boats but the choke was a very gray area for me!
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