Why is my generator "clunking"?
My 8kw Onan Diesel generator has been working fine, when I push the pre-heat switch it goes "tickety-tickety" and after about 15 seconds fires right up. This week while running it, it started to emit...
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If it's happening while it's preheating, it's not something in the engine mechanicals that are not yet moving. My guess would be an electric fuel pump. Disclaimer: I don't know anything specific about the particular generator model.
