You don’t have to. I did it because I wasn’t sure the motor was getting the right amount of oil. I also understand that these oil injection pumps are prone to failure. My oil injection warning module died so I didn’t have a way for the alarm to warn me if the pump failed. So I thought it would be best to get rid of it and add the oil directly to the gas each fill up. That way I know for sure the oil is right and is definitely doing the job. Peace of mind mainly. I thought about trying to find all the necessary parts to make the oil injection system functional again but when I priced it all it wasn’t worth the cost when I could cheaply block it off. Hope that helps.
Shoutout to MerCson for the help with the timing. Go to his channel and subscribe. He has great stuff on these older Mercury motors.
Why would you block off the oil? My brother is about to get a boat with this engine
You don’t have to. I did it because I wasn’t sure the motor was getting the right amount of oil. I also understand that these oil injection pumps are prone to failure. My oil injection warning module died so I didn’t have a way for the alarm to warn me if the pump failed. So I thought it would be best to get rid of it and add the oil directly to the gas each fill up. That way I know for sure the oil is right and is definitely doing the job. Peace of mind mainly. I thought about trying to find all the necessary parts to make the oil injection system functional again but when I priced it all it wasn’t worth the cost when I could cheaply block it off. Hope that helps.