Use an old already colored plug for your test, it will be so much easier to read. Make sure your test is at full throttle only for 900-1200 ft shutting down engine while throttle is wide open. Letting off the throttle for only a few seconds will ruin the test as the pilot jet will rich'n up the mixture and give you a false reading. So bring your plug wrench with you and remember that you will be pulling the plug on a hot engine so before you run the test make sure the plug is only slightly snug just enough that it does not leak.
|