Here is a good You Tube video on diagnosing engine surging problems.
S seattlepioneer Active Member Joined Jun 20, 2020 Threads 9 Messages 88 Jul 4, 2020 #1 Here is a good You Tube video on diagnosing engine surging problems.
S slomo Well-Known Member Joined Jul 14, 2019 Threads 25 Messages 914 Jul 12, 2020 #2 Carb is plugged up or bad diaphragm. slomo