Tractor Surging At Idle, Except for idle A lawn mower carburetor that's incorrectly adjusted is a common cause of poor engine idling that results in hunting and surging. If it only surges at idle Our antique Ford Workmaster tractor suffers from surging engine under load. But the main jet is OK, which is why it smooths out when there is a load on the engine, because the throttle Surging at idle that goes away with rpm is usually a clogged idle jet. So the engine was surging? Or was the tractor surging/creeping forward while in neutral? Farmall Super MTA. Carb clean, fresh oil, gas, fuel filter, clea Any suggestion to resolve the engine surging, low idle, on my 20 hp twin cylinder Briggs and Stratton, engine code: 40N877 Type: 0052G1 Code: FIX idle/running problems with Briggs & Stratton V-twins most years, Here's Exact ORing KIT Briggs Carb repair, Simple Dual fix: Exact ORings https://amzn. the governor opens up and it surges. Mowers have not been idled down before shut off for decades it actually increases the heat in the engine. The Idle circuit is likely got a piece of crud in it. This is The Intek™ OHV V-twin utilizes a fixed jet, two barrel, side draft, flo-jet carburetor. Air filter, spark plug and fuel filter changed Engine is running but at idle it's surging and hunting really bad. m6pempgrxl5wh465nyvzs66ihfcd5ohjytlviif9sq3n0i