I have a 40 IDF. when every i press the gas pedal down fast, it hesiates. I have to feather the gas on acceleration, or ride the clutch to get the rpm's up before going...any ideas?
Thanks
- posted
16 years ago
WEBER 40 IDF hesitation on acceleration
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- posted
16 years ago
Jetting, accelerator pump, ignition curve...
Jan
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- posted
16 years ago
I gather you are running a single. The manifold is too big to have adequate vacuum at low RPMs. Bad idea.
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- posted
16 years ago
Need more engine specs, but smaller venturies might help low end performance. That would then require rejetting of course, and restrict high rpm performance. If the engine doesn't make any power at high rpms, then this might be worth trying.
Jan
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- posted
16 years ago
You need to fatten the pump jet. You're not getting a richer fuel charge off idle. Idle the motor, blip the throttle, when you notice a black smokey discharge out of the exhaust, you'll be on the money.
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16 years ago
i am not sure where to find the pump jet
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16 years ago
tuning a carb to run overly rich to cover up a problem is a terrible idea... a rich(smokey rich) mixture not only kills mileage, but hurts your efficiency/power and contaminates the oil very quickly...that can lead to other problems.. fix problems, not symptoms..