Quote:
Originally Posted by olddog
11-12:1 at cruise is way too rich. It will wash the oil off your cylinder walls and wear out your rings, cylinder walls, and piston skirts. Your should be much closer to 14.7:1 at cruise.
WOT - most expert advice I read says 12.5:1 is about where maximum power is made. Some engines will make maximum power at 13:1, but a lot of engines will detonate this lean.
I would get the fuel right ASAP. |
Good advice here.
The carburetor needs a few changes to sorts this.
Now the engine is mechanically sound, some carb tuning should wake it up.