I’m rebuilding a salvage 900s. The motor starts with throttle and will run under throttle, but it will not idle or start without throttle. I was able to get it to idle at 2k+ rpms for a bit this weekend. I realize that’s too high, but it did run on its own.

I’ve checked valves and timing. Seems to be in spec here.


What should I check next? Compression?

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