Thread: rochester question
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07-28-2008 02:19 PM #1
rochester question
I have 1981 chevy c10 with a 305 and a rochester dual jet 2 barrel carb. I have heard that there is a way to knock out some plugs that cover adjustment screws but don't know how to get the plugs out if they really exist. Any advice would be much appreciated!
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07-29-2008 05:07 AM #2
Those would be the plugs that cover the idle mixture screws. They made a special cutter for removing them. I still have mine somewhere. You can get them out with the carb removed. Use a small punch or caping chisel and cut the base out from the bottom to knock them out. That method does tend to leave the carb looking a little butchered. A couple small cuts on each with a hack saw will make it a little cleaner.
If you are having drivability problems I doubt if the idle mixture adjustment will help much.
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08-05-2008 11:09 AM #3
Thanks for the info. I wanted to be able to adjust my idle and choke better. I figured it would be easier to fine tune it this way.
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08-09-2008 03:48 PM #4
Yes, also if you have the round black choke stat on the side it will be necessary to drill out the rivets that hold it on and replace them with suitable screws. The bottom rivet is hard to get at to drill with the carb on the engine but it can be ground off with a die grinder and drove out with a suitable bent 1/8 inch (welding) rod..
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