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Mariner 1998 200hp efi mag

thank you for the feedback. Im
a novice at this boat motor surgery
To be clear; should I disconnect the oil injection system?
I have approx 35gal of non ethanol fuel in the tank: so, you recommend adding the proper oil mix to this existing fuel?
thank you for your time
 
Yes then get a OEM manual and test the oil and temp sensor/operations. Could just be the module or water in fuel filter or up to oiler problems
 
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