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Unread 10-22-2016, 10:26 AM
Greyduk Greyduk is offline
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Default 1994 Mercury oil injection?
I just bought a 1994 Mercury 150. Is the oil in the reservoir tank injected directly into the engine? So that if I run the engine off of a 6 gallon tank I don't have to pre-mix? Thanks.
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Unread 10-22-2016, 01:07 PM
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The oil in the tank under the cowling gravity flows to the oil pump. If you just bought it, i'd confirm the po didn't disconnect anything to bypass the oil injection. Just to make sure, i'd premix your pony tank at 50-1. Shouldn't hurt it to double oil it.

Edit: you didn't say if it was carbed or fuel injected
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Unread 10-22-2016, 01:46 PM
Greyduk Greyduk is offline
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phatdaddy, Thanks for the input. The oil injection system is still operational,so I should be okay to just have gas in the 6 gallon tank it sounds like. You catchin any Spanish?
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Unread 10-22-2016, 02:35 PM
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Quote:
Originally Posted by Greyduk View Post
phatdaddy, Thanks for the input. The oil injection system is still operational,so I should be okay to just have gas in the 6 gallon tank it sounds like. You catchin any Spanish?
Different companies use different systems. On your engine the oil is mixed with the gas just before it goes into the carbs. Set up an aux tank with 50 to 1 mix. Look on the port side of the engine, you'll see the oil pump . look for the hose coming out of the pump that "t"s with the gas line near the bottom port side. Disconnect the oil hose from the "t" and put it into a small container. Start your engine running on the premix, and observe the hose you just disconnected. If your engine VRO is working properly you'll see about 6 drops of oil (or more) per minute while your engine is idling around 1000 rpm. No oil drip = bad.
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Last edited by Destroyer; 10-22-2016 at 02:47 PM.
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Unread 10-22-2016, 08:53 PM
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Until you know it works, run it on pre mix. That system was very problematic to say the least. Many a Merc has died because of thst system and all the problems it had. And many times the alarm won't even go off when its messing up.
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Unread 10-23-2016, 12:00 AM
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Caught one last week while trolling for grouper. Not really targeting them right now, trying to find a pompano. Been a real slow fishing fall so far. It finally cooled down.

How bout over your way?
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