Fouled Plug
Ensign
- Joined
- Jun 29, 2001
- Messages
- 935
My brother recently aquired a Merc 350, serial #2571393. Believe it to be a 1969 model. The motor has 120/125# compression, good spark, cleaned carb. It still seems to push as though it is on one cylinder, barely moving a very light 14' Fiberform runabout. Has an intermittant miss as though second cylinder wants to join in the fun. Plugs look identical. Tried pumping primer bulb, but it stays firm. How do you adjust the mixture on the carb? Any thoughts would be appreciated. Thanks!