World 500 GP Racer
Join Date: Aug 2004
Location: Tempe, AZ
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When you performed the compression test, did you hold the throttle wide open? You want as much air as possible in that combustion chamber. Also, take off your gas tank and carburetors and pour a bit of motor oil into the combustion chamber. See if this makes any noticeable change in your compression test.
As far as adjusting carburetors, it is really not that hard. It is simple if you have an EGA machine. When doing blind tuning, it's good to start with the factory settings for your location. Call your dealership to find out these settings. From there, when you are tuning, if the motor RPM's go up, the motor is reacting positively to what you are doing. If not, go the other direction. Blind tuning will require lots of test rides, and a lot of patience.
As far as I am aware, there are no real gaskets in the Fuel system that will cause fuel to be coming out of your exhaust pipe. Fuel is fed by line from the tank, directly into the float bowls of the carburetor. From there, the fuel is atomized and sent into your combustion chamber. Fuel leaks could only be around the tank lines, or the caburetor itself. If you ACTUALLY have fuel coming out of your exhaust, you have a mis-firing cylinder, or an extremely rich running cylinder/motor. I would hardly think your bike would start or even run consistently if you had raw fuel coming out of your exhaust.
Again, compression tests are used only to identify a compression problem with your motor. A leakdown test is required to figure out where that problem lies and what component is causing it.
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