Weather Condition |
Needle Adjustments to Make |
Higher Air Temp |
Go Leaner |
Lower Air Temp |
Go Richer |
Higher Atmospheric Pressure |
Go Richer |
Lower Atmospheric Pressure |
Go Leaner |
Higher Humidity |
Go Leaner |
Lower Humidity |
Go Richer |
Higher Altitude |
Go Leaner |
Lower Altidude |
Go Richer |
Remember that more than one of these conditions can and probably will change at the same time. This will at least get you headed in the right direction with your tuning.