Mercury – Weber 4-Barrel Carburetor Repair Kit | Carburetion System | Precision Marine Components | 8M0120196Mercury Weber 4 Barrel Carburetor Repair Kit Carburetion System Precision Marine Components 8M0120196 Overview Anyone who has spent time with a classic MerCruiser 4. 3LX knows how rewarding it is when the engine fires cleanly, settles into a steady idle, and responds the moment you lean into the throttle. But when a carburetor starts showing its agemaybe a stumble on acceleration, a rough idle, or a bit of hesitationyou feel it right away. Thats when