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  #11  
Old 08-18-2013, 07:30 PM
Larry Jones Larry Jones is offline
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Default the bores

Let me see if I understand what we were through John.I indicated that the car started out ok. After about 15 minutes of driving the engine started to race. So that was caused by the secondaries not opening up all the way is this statement correct. My second statement then I couldn't really use my passing when I oprnrd up the throttle and wanted to go pass 40 mph It then started to cough and hesitate then. So in closing when you punch it the secondaries should open up. Before its just the primary that Iam using. Thanks for all of your help. John. Larry
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  #12  
Old 08-18-2013, 08:07 PM
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jopizz jopizz is offline
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Default

I'm thinking that the secondaries are opening up before they should causing the car to race. The secondaries should only open up when you hit a high speed and then should close when you decelerate. That's why I suggested that it could be a bad diaphragm. That would also cause the hesitation you describe. I'm just giving you possibilities. Without seeing your carburetor I'm just guessing. It could be something completely different.

John
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  #13  
Old 08-18-2013, 08:18 PM
Larry Jones Larry Jones is offline
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Default changing the diaphram

Is changing out the diaphragm be any problem . It looks like in the illustration inmy manual just four screws and a spring or is there more to that. Would nappa have a replacement for that. What purpose does it serve. Bofore I do anything I will clean the plates and the barrels. Thank you John.
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  #14  
Old 08-29-2013, 11:39 AM
Larry Jones Larry Jones is offline
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Default carb rebuilt

I had several issues with the engine racing. So I had the choke rebuilt. A new secondary diaphragm gasket installed. Plus there is a small plastic rod that is on the passenger side of the carburetor that broke off also so the secondaryies weren't closing when they should odf when I backed off the gas. Larry
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