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I have a 98 ZR600 EFI I bought as a basket case and put a new topend in it among other things. Rode it last year and thought it ran decent but this is my first sled. A buddy of mine rode it and seemed to think it was a bit boggy on the low end coming off idle. Also the thing uses oil like crazy. The plugs are black and it even has that nasty unburned oil residue seeping out of the left hand jug exhaust port. I rigged the oil pump myself so I know its adjusted properly. So far I changed the temp sensor and fuel pressure regulator from some extra parts I had laying around here. Changing these parts didn't make a change. Anyone have any idea's as to why this thing is running rich? The only aftermarket part on it is a set of original V Force reeds. Everything else is stock. Let me know. Thanks
