S
Simonator
Guest
My engine was running great until one day. I was out riding in the rain, and the engine died. It would not start back up or fire at all. I tried it again a few days later with no luck. The engine was getting fuel, spark, and compression. Clutch was not slipping either. I found a spare coil layin around, so i swapped that one on. It fired right up. I was like WEEEEEEEEEE! Until I hit about 20 mph (where the powerband usually starts). It started sputtering and would not go any faster. It also sputters under a load. It is not acting like it has an air leak. It idles down real fast when i disengage the clutch. It runs worse when I play with the choke. Before when i had an air leak, it ran good with the choke half open. It doesnt even like to start with teh choke. It fires right up with the choke off..... weird... I checked the spark plug. It is a light tan color and dry. The carb was adjusted the 3rd spot down on the pin. I went to the 4th (richest) setting. It ran worse. I pulled the plug right after that, and it was still the same.
I bought a multimeter so I can test the magneto. I just haven't figured out how to use it. Can someone explain this to me, or link me to a thread that explains it?
I also checked the compression. I did it when the engine was cold. It is at 70 psi. Seems a little low, but maybe it is because the engine is cold? Even if it is a little low, the engine should still run ok. I would like to check it again when the engien is warm, but I do not have the gauge handy.
Any ideas?
I bought a multimeter so I can test the magneto. I just haven't figured out how to use it. Can someone explain this to me, or link me to a thread that explains it?
I also checked the compression. I did it when the engine was cold. It is at 70 psi. Seems a little low, but maybe it is because the engine is cold? Even if it is a little low, the engine should still run ok. I would like to check it again when the engien is warm, but I do not have the gauge handy.
Any ideas?