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Thanks Charles. The compression test was ran be a certified mercury dealer and service center. I dont know the details of how they ran the test, but I hope they followed protocol. Seeing the range you provided it would appear most cylinders are low. Also, I'm aware of the issues with Optimax's...

All, I'm new to the forum. I'm looking for some advice/help with a potential boat purchase. I'm looking to purchase a new boat with a 2002 200hp Optimax with roughly 490 hours. I have compression info. Compression by cylinder. #1 - 108 #2 - 108 #3 - 110 #4 - 120 #5 - 112 #6 - 108 I haven't...