rhillman75
Petty Officer 2nd Class
- Joined
- Jul 28, 2010
- Messages
- 176
Not quite sure if this is "normal" or not, so I am going to ask. I did the rebuild on the '96 MerCarb 2 barrel rebuild about 3 weeks ago. I dunked it for about 3 days before I rebuilt it to the spec the carb kit and the manual stated. I set the "mixture" screw to 1-1/4 turns out from seat using a deep well socket and my fingers to make it "lightly seat". I set the "idle" screw to 2 turns clockwise after it initially touched the cam. Took it out to the water, it started immediately and idled at 1,000 rpm. I let it warm up up to 160 degrees, turned it off, grounded my purple/white wire, restarted it and all I did was drop the "idle" screw counter clockwise by 1/4 of a turn to get to 650-750 rpms. The motor did not shake or stumble all day (6 hours of running time). Ran beautifully all day including effortless restarts. I pulled the arrestor off and noticed black "carbon" build up on the venturis. Does this soud like I am running rich and I need to turn the "mixure" screw in another 1/4 turn clockwise, putting me at 1 turn out from seat. I would think if I go counter clockwise I would be making it richer. Even using the "thicker" based gasket, I did not notice hardly any difference in turning the "mixture" screw in or out in 1/4 increments (using my shop tachometer.)
