Now you need to hone your vacuum leak detecting skills. Turn the idle screw out to lower the RPM as low as you can so that it barely stays running. This will reduce the amount of wind caused by the fan so that you can use an unlit propane torch to find a vacuum leak. RPM will increase when propane gets sucked into the leak. To illustrate what the RPM increase sounds like, place the propane over the top of the carburetor for a test.
Carl
