Sputter cough
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Intermediate
Joined: May 2012
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From: CA Bay area
Sputter cough
When riding around 50 or so my bike has an occasional sputter or cough. I can accelerate fine, and doesn't pop when decelerating. I've cleaned out the tank, new gas, new fuel filter, plugs,also new seal from the carburetor to the manifold. The bike is an 88 FXR, and it has the updated CVH carb. Any thoughts
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Intermediate
Joined: May 2012
Posts: 46
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From: CA Bay area
I disconnected the fuel line before I did that, so I don't think that's it. It's weird has power runs and idles fine. Just when cruising at a consistent sped of 50 or so is when it does it. Maybe a clogged jet?
Thread Starter
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Intermediate
Joined: May 2012
Posts: 46
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From: CA Bay area
I took the carb apart and it looked pretty good. I made sure the jets are clear. Also did the spray test on on the usual spots, and no issues. So I'll ride here in a bit and check back in. I did notice that when I rev the motor, the head light dims a bit when the motor decelerates. So could an old bad battery contribute to this?
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Joined: Dec 2010
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From: Coromandel Peninsula New Zealand
The headlight should dim when you decelerate...or rather, look at it the other way around....it should get brighter when you rev it as the charging increases.
The symptoms you describe can be caused by the accelerator pump "loading up" and the cure is to check to see if the pump piston protrudes into the pump body when at rest, if it does just file the end until it sits flush in the body.
On the other hand it could be many things, including having a thunderjet kit with plastic slide fitted.
The symptoms you describe can be caused by the accelerator pump "loading up" and the cure is to check to see if the pump piston protrudes into the pump body when at rest, if it does just file the end until it sits flush in the body.
On the other hand it could be many things, including having a thunderjet kit with plastic slide fitted.
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