Carb cough/hesitation accelerating
Thread Starter
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Novice
Joined: Apr 2022
Posts: 15
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From: Canada
Carb cough/hesitation accelerating
Hey all!
first time posting in here and I'm getting desperate.
My bike (98 xl883) last fall started "coughing" from the carb while pulling away (or just accelerating in general) I thought it may have not been warmed up enough but it kept doing it.
Then it started doing it while cruising at a steady speed. And mainly pulling away from stops.
I had the carb cleaned, plugs changed, air filter replaced and checked the tank for rust/dirt.
Any advice would be appreciated!
James
first time posting in here and I'm getting desperate.
My bike (98 xl883) last fall started "coughing" from the carb while pulling away (or just accelerating in general) I thought it may have not been warmed up enough but it kept doing it.
Then it started doing it while cruising at a steady speed. And mainly pulling away from stops.
I had the carb cleaned, plugs changed, air filter replaced and checked the tank for rust/dirt.
Any advice would be appreciated!
James
Last edited by Good Co; Apr 27, 2022 at 11:26 AM. Reason: Info
6th Gear
Joined: May 2020
Posts: 14
Likes: 10
From: Ontario
Best way to check is take some carb cleaner while the bike is warmed up and running and spray near the intake manifold if the rpm changes then you most likley have and intake gasket leak. If you pull the carb off and look through the intake manifold you can see some of the manifold to head gasket, you can check to see if it is ripped and creating a leak. That's how I found my leak
Thread Starter
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Novice
Joined: Apr 2022
Posts: 15
Likes: 0
From: Canada
Best way to check is take some carb cleaner while the bike is warmed up and running and spray near the intake manifold if the rpm changes then you most likley have and intake gasket leak. If you pull the carb off and look through the intake manifold you can see some of the manifold to head gasket, you can check to see if it is ripped and creating a leak. That's how I found my leak
Didn't hear any change in rpm but the carb to intake gasket is pretty soft. I ordered the kit but kinda have a feeling it may not be it. I saw someone on here talk about a VOES grounding issue?
Thread Starter
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Novice
Joined: Apr 2022
Posts: 15
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From: Canada
I was considering this although it ran perfect then one day didn't, Which makes me believe it's not a jetting problem.
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Grand HDF Member
Joined: Apr 2007
Posts: 3,727
Likes: 3,073
From: Brighton, MI
The VOES would not make your bike do what your experiencing unless you have the vacuum hose that goes to it either disconnected or leaking. There should be a vacuum hose coming from either the intake manifold or carb, that "T's" off so one hose goes to the VOES and the other goes to the petcock. Check for disconnections or leaks in that hose. You can even disconnect the hose, plug the nipple on the carb (or manifold) and take it for a test ride. See if the bucking goes away.
Did you clean the carb or someone else?
The slow jet in the carb is very small and it don't take much to clog. Same with the idle transfer ports. Very small and you have 5 of them. If obstructed, they can be difficult to clean and often over looked. They can be cleaned, just need to verify they are clean...
Did you clean the carb or someone else?
The slow jet in the carb is very small and it don't take much to clog. Same with the idle transfer ports. Very small and you have 5 of them. If obstructed, they can be difficult to clean and often over looked. They can be cleaned, just need to verify they are clean...
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Joe Kucinski
Seasoned HDF Member
Joined: Mar 2010
Posts: 38,623
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From: Honah Lee
Sounds like you still have some trash in carb ..
Make your second new post over in the new member area.
Just in case .
Welcome from North Beach, FL., USA!
Just in case you have not done this.
Add a Signature Line in your USER set up for your bike year, model, and all the letters that Harley recognizes it with so others see at the bottom of all your post. This enables others to know your exact model if you ever ask a question.
And an Avatar of your favorite shot in the USER set up for the small picture others will see in the top left corner of your post.
Your all set.... Enjoy the ride! ______________
Make your second new post over in the new member area.
Just in case .
Welcome from North Beach, FL., USA!
Just in case you have not done this.
Add a Signature Line in your USER set up for your bike year, model, and all the letters that Harley recognizes it with so others see at the bottom of all your post. This enables others to know your exact model if you ever ask a question.
And an Avatar of your favorite shot in the USER set up for the small picture others will see in the top left corner of your post.
Your all set.... Enjoy the ride! ______________
Last edited by Jackie Paper; Apr 28, 2022 at 05:34 AM.
Thread Starter
|
Novice
Joined: Apr 2022
Posts: 15
Likes: 0
From: Canada
The VOES would not make your bike do what your experiencing unless you have the vacuum hose that goes to it either disconnected or leaking. There should be a vacuum hose coming from either the intake manifold or carb, that "T's" off so one hose goes to the VOES and the other goes to the petcock. Check for disconnections or leaks in that hose. You can even disconnect the hose, plug the nipple on the carb (or manifold) and take it for a test ride. See if the bucking goes away.
Did you clean the carb or someone else?
The slow jet in the carb is very small and it don't take much to clog. Same with the idle transfer ports. Very small and you have 5 of them. If obstructed, they can be difficult to clean and often over looked. They can be cleaned, just need to verify they are clean...
Did you clean the carb or someone else?
The slow jet in the carb is very small and it don't take much to clog. Same with the idle transfer ports. Very small and you have 5 of them. If obstructed, they can be difficult to clean and often over looked. They can be cleaned, just need to verify they are clean...
To summarize I have to get the carb out and check everything over. Also I ordered new seals for the carb/manifold/intake.