Quote:
Originally Posted by Dick Boneske
I've never seen a throttle spring break on a Tri-Power. Too much spring tension makes these setups virtually impossible to drive without the herky-jerky throttle problem. Rochester 2G carbs all have a spring under the accelerator pump that pushes the throttle plates closed--not as much pressure as the return spring, but it's significant.
The only reason I can think of to run dual springs is to satisfy a tech inspector.
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Last Summer I added a second spring because well some forms of logic seem to dictate that it is a good idea. And I've been experiencing that exact herky=jerky problem you mention. The throttle sticks right off idle and when you press harder to overcome the resistance you get more throttle than you want. I'm taking the second spring off with the hopes the smooth throttle function will return.