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I have a 2003 Z250 which is hard to start cold. I've hooked up YDS and it appears that the timing is not advancing to 7BTDC (cold start timing) I've checked the water temp sensor as well as the Crank position sensor which I believe aide in cold start. I'm not sure what to check next. My supply voltage on the TPS is 4.92V, which I think may be a little low because I think I'm supposed to have 5V reference voltage on the sensors. Any help would be appreciated.