These are common engine symptoms and troubleshooting items which, include but are not limited to, the carburetor. This troubleshooting guide is a complination from many OE manuals and may not apply specifically to your carburetor.

Keep in mind we are not general mechanics and can not help with issues outside of the carburetor. This list is simply here to help diagnose possible problems.

COMMON ENGINE SYMPTOMS

ENGINE FAILS TO START

ENGINE LOPES OR SURGES WHILE IDLING

ENGINE MISSES WHILE IDLING

ENGINE MISSES AT VARIOUS SPEEDS

ENGINE STALLS

ENGINE HAS LOW POWER

ENGINE DIESELING ON SHUT OFF

EXCESSIVE FUEL CONSUMPTION (MARINE)

“SOUR” OR BAD FUEL

COLD STARTING PROBLEMS

HOT STARTING PROBLEMS

COLD ENGINE DRIVEABILITY SYMPTOMS

WARM ENGINE DRIVEABILITY SYMPTOM

TROUBLESHOOTING SEQUENCE FOR PINPOINTING PROBLEMS

(As taken from a 1957 marine manual)