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#1
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The one Merc 150 I owned didn't have oil injection so I have no experience but I did a Google search and found a few things to look over.
https://www.google.com/#q=how+to+dis...rcury+outboard I'm sure Spare or Therm will chime in soon. as well.
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*************************************** Stay Safe!  Sold - 1984 V-20 Cuddy with a 2003 Johnson 140 hp gas sippin 4-stroke. 1995 Ranger 250C with a 2015 Suzuki 300 hp 4-stroke. 
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#2
11-23-2013, 01:50 PM
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like rmb said. the big dogs will be along soon. they used to make a kit with a plate that plugged the hole when you pulled the pump. cap the line going to the fuel line, cap the pulse line going from the block to the remote tank and i think just unplug the wire to the pump & the cap on the onboard tank. doing this from memory, so might have missed a thing or two.
i have a 94 mariner that i am still using the oil injection. it smokes like willie nelson's bus for about 2-3 minutes, then clears up.
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#3
11-23-2013, 04:48 PM
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randleman great articles thanks now i have some where to look for advice but any one else that actually did it would be great advice, is it hard to do?
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love to fish
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#4
11-23-2013, 05:08 PM
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easy way: loop the oil line around from the inlet side to the outlet side of the oil pump, disconnect the wires from the oil tank, oil pump sender and the oil alarm module, ditch the module.
next best way, remove the pump, pull the adapter out, pull the gear out, put the oil pump back on, ditch the sender and module. Best way, order the oil pump block off kit from Mercury, follow their directions, ditch the electrical stuff. The mercury kit fills the void left from the removal of the oil gear and adapter, ensuring equal crank case volume for better power and cylinder balance, It will also prevent the drive gear bushing from falling out(never seen it happen)
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#5
11-24-2013, 11:31 AM
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thanks again you guys are the best i will be doing that so i dont have to find out why my motor gets full of oil when i let her sit, i replaced the pulse valve [check valve ] and was told that was the problem only to have it ha[[en again the only other choice i have is to disconnect the system
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love to fish
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#6
11-24-2013, 01:22 PM
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even with premix, you will still have a lot of smoke on a cold start up, just the nature of the beast. and more smoke while idling because your mixed at 50:1. trade off is you will have peace of mind engine is lubed properly.
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#7
11-24-2013, 03:01 PM
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my 60 would do that, turned out to be a bad seal on the oil pump itself, it would leak oil into the bottom cylinder(oil pump mounted lower on a 60), when i went to crank it, it sounded like the starter was bad or the battery was low, once it fired up, it would kill mosquitoes for miles around. Let it sit for a few days, pull the plugs, see if oil spews out of one hole(#2?), it would probably leak down thru the sealing rings as well, so don't be surprised if it comes out of all the cylinders. I ended up replacing the oil pump with another one, it fixed the problem
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