Carburetor Idle Circuit Test
- Connect tachometer to engine. Remove air cleaner. If equipped, disconnect and plug vacuum line at solenoid kicker. Start engine, momentarily raise engine speed above 1100 RPM and then wait 2 minutes for idle speed to stabilize. Plug idle air bleed hole.
- Engine speed should drop. If so, go to EGR SYSTEM TEST . If not, or if engine speed increases, check carburetor for plugged circuit and repair as needed.