The Stovebolt Site Forums The Shop Area Engine Shop Hesitates bad - Rochester B

Try setting the timing up a little. That might help but it sounds like the carb is lean. Pull the top off & recheck the float level. It should be 1 9/32 from the gasket to the bottom of the float with the air horn upside down. You can tailor it a little by raiseing it to 1 8/32. Look at the main jet & the size should be stamped on it. When these carbs go through the rebuilders they mix up parts & applications. If its a 216 engine the jet will be around .052-.053. A 235 will have .055 to .058. You can go to a 1-2 thous. larger jet. Make sure the power piston goes into the hole & kicks the ball off its seat. They have been known to get bent.