01 Trailblazer 250 hard starting

[tinker1980]

I'm new to ATVs, I figured I'd start small with a 250 trailblazer. I've had it since February, and it's been a good machine... except for two problems. First, the oil injector stopped working, so I put premix in it - what ratio should that be at? I've heard 32:1 and 50:1. Second, I have a problem getting it to start when the engine is warmed up. When it's cold, when I am getting it started at the beginning of a ride, it fires right up, but when it's warmed up after an hour or so it takes a ton of cranking to get it to start. The air filter is clean, and the spark plug is new... didn't help to clean/change those.

What should the compression be like? I pull the rope and I feel where the piston is coming up, but it doesn't have compression anything like my friend's YZ250F. Is it ok, or do I need to do a top end rebuild?

-Mark

[tinker1980]

4 days... 16 views... no answer. Nice.

[Y2K YZ250]

Sorry I have no ideas for you , but stop in at [Only registered and activated users can see links. ], those guys will get you straight..

[Y2K YZ250]

7 days and no check back or reply from original poster.....NICE

[Nolengerke]

Hey, got a quick solution. My old honda ATV use to do this and my warrior started doing it. Check the electrical system when the bike is hot. Sometimes ignition components hear up during a ride and start to break contact. Usually a CDI problem if the bike has one.