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Low Speed - Idle Roughness
Rough running at idle and low speed operation most often occurs when the pilot circuit in the carbs becomes partially clogged. The engine will also experience a miss or throttle lag from not getting the correct amount of fuel. You can do a little test to determine if that is the problem. Read More... |
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Won't Accelerate or Increase RPM
You might find that the engine will not accelerate or increase RPM.
This is often caused by torn or improperly seated carb slide diaphragms. On a V4, the carbs open with intake vacuum and when one or more of the diaphragms are torn the slide will not lift. In effect, this would be like Read More... |
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Hanging or Slow Return to Idle
Hang idle or a slow return to idle after a rev is commonly caused by air leaks. The air leaks can be caused by improperly seated carb mounting boots, intake funnels that are not sealing the carb body to the airbox base Read More... |
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| Coming Soon: |
| Fuel Tank Cleaning |
| Suggested Jetting for Modifications |
| Air box Mods |
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