Idles fine, sputters and bogs on acceleration
Thread Starter
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Seasoned HDF Member
Joined: Dec 2012
Posts: 6,673
Likes: 502
From: Orange County
You just might have hit it when you adjusted the Idle and everything was fine --- I'm not familiar with your carb but the carbs that I am even some Jap bikes have a O-ring and a washer under the Idle screw , Remove your Idle screw unravel a paper clip bend a end to 90 degrees cut off to 1/16 inch and reach down in the screw hole tho hopefully find a washer and O-ring it might a couple of try's . Auto's do not have this only motorcycles, atv, ect -- you might also try to find a parts brake down , If the o-ring is there you will only find it in a over haul kit --- I hope that's it -- a easy fix , many people replace the whole carb because of this 10 cent O-ring
I also talked to someone, said it might be the voltage regulator?
Road Warrior
Joined: Jul 2016
Posts: 1,370
Likes: 439
From: va
Have you been using ethanol gas ??? the fuel pump might not be getting enough gas due to a small hole that feeds it --- clogged because of ethanol gas -- then the bowl needs to soak in a strong carb cleaner , that might be a good idea anyway , just don't put the float in the cleaner
I have had a bad battery cause a Ign, problem -- low amps but yours is on acceleration
I have had a bad battery cause a Ign, problem -- low amps but yours is on acceleration
Thread Starter
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Seasoned HDF Member
Joined: Dec 2012
Posts: 6,673
Likes: 502
From: Orange County
Yeah, it's a bit strange. I really think it's related to the ignition. Tonight I changed the coil. The bike starts and idles, and as it's sitting there warming up, the engine surges in RPM and sounds like it's firing on two cylinders, then it 's like it's only firing on one. Just back and forth like that, just sitting there idling.
http://vid304.photobucket.com/albums...psoddsrnq6.mp4
Here's a video:
<embed width="600" height="361" type="application/x-shockwave-flash" allowFullscreen="true" allowNetworking="all" wmode="transparent" src="http://static.photobucket.com/player.swf" flashvars="file=http%3A%2F%2Fvid304.photobucket.co m%2Falbums%2Fnn194%2Fgczerkawski%2F20160822_205620 _zpsoddsrnq6.mp4&title=">
http://vid304.photobucket.com/albums...psoddsrnq6.mp4
Here's a video:
<embed width="600" height="361" type="application/x-shockwave-flash" allowFullscreen="true" allowNetworking="all" wmode="transparent" src="http://static.photobucket.com/player.swf" flashvars="file=http%3A%2F%2Fvid304.photobucket.co m%2Falbums%2Fnn194%2Fgczerkawski%2F20160822_205620 _zpsoddsrnq6.mp4&title=">
Thread Starter
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Seasoned HDF Member
Joined: Dec 2012
Posts: 6,673
Likes: 502
From: Orange County
I have the Daytona Twin Tec ignition.
Is there a better one than that for a carbureted bike?
If this thing failed I will be seriously disappointed in the product.
Is there a better one than that for a carbureted bike?
If this thing failed I will be seriously disappointed in the product.
Road Warrior
Joined: Jul 2016
Posts: 1,370
Likes: 439
From: va
I would really go with the carb cleaning and check for manifold air leaks , the gas we get is JUNK ethanol is corn starch that clogs things up that set for more than a couple of weeks at a time , you can't see it in the small holes cause it looks like a spider web I have had to push a drill bit through jets to open them up
Thread Starter
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Seasoned HDF Member
Joined: Dec 2012
Posts: 6,673
Likes: 502
From: Orange County
I would really go with the carb cleaning and check for manifold air leaks , the gas we get is JUNK ethanol is corn starch that clogs things up that set for more than a couple of weeks at a time , you can't see it in the small holes cause it looks like a spider web I have had to push a drill bit through jets to open them up
Road Warrior
Joined: Jul 2016
Posts: 1,370
Likes: 439
From: va
Now I'm talking about soaking the carb in carb cleaner that you buy in a bucket not a spray can , at $25 for 1gal that' a lot to maybe never to use again so take your carb to a auto machine shop and they might be $5 or $10 , that stuff really cleans things up , don't put the float in that cleaner . I have a feeling you will like the out come, ethanol is country wide
Seasoned HDF Member
Joined: Dec 2005
Posts: 19,936
Likes: 8,036
From: poway
Yeah, it's a bit strange. I really think it's related to the ignition. Tonight I changed the coil. The bike starts and idles, and as it's sitting there warming up, the engine surges in RPM and sounds like it's firing on two cylinders, then it 's like it's only firing on one. Just back and forth like that, just sitting there idling.
http://vid304.photobucket.com/albums...psoddsrnq6.mp4
Here's a video:
http://vid304.photobucket.com/albums...psoddsrnq6.mp4
Here's a video:
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Thread Starter
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Seasoned HDF Member
Joined: Dec 2012
Posts: 6,673
Likes: 502
From: Orange County
I'm not going to rule anything out, but compression? Going out that quick? I just did the cylinders, about 2k miles ago. Fresh 98 CI build.