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Hello my name is ***** ***** am I speaking with?
I Do not see any kind of model information from you. What is a 300hp? Are you working on an inboard our outboard? What is the brand/model or serial number of what you are working on?
I don't even know what you are working on. I may or may not be the right person to speak with. What are you working on?
Are you still here?
I still dont' know what you have. Who makes this engine? What is the model or serial number on it?
Yamaha, got it. Now what is the history on this engine? Does it sit for long periods of time? When was the last time it ran correctly? Has anything happened to it that I should know about?
Sorry for the wait, I had to check my turkey. Yamaha HPDI engines are fairly complicated and a scan tool is required to actually do any kind of troubleshooting on it. What kinds of questions did you have for me? Have you checked engine compression, spark output, or run it on another fuel source yet?