Removing merc oil injection
 

I have a new to me. 2001 mercury saltwater 200hp.
I think id like to remove the injection in searching info for this motor i saw somthi g on how to do this but cant find it now. I dont want to fudge it up.

Why?

Merc's oil injection uses a mechanically driven oil pump (as opposed to a diaphragm pump), has two safeties that will set off the warning buzzer, and is quite reliable if you don't run the motor over 6000 rpm. I've got a '91 150XR4 that still has it and it uses way less oil than my 1996 200 that doesn't. I'm thinking of putting it back on the '96.

In the very unlikely case that it fails while you're offshore, pour the oil from the oil tank into the fuel tank and drive home. I just don't see a down side to keeping the oil injection.

My $0.02
Dave

just a thought ,
im not getint a warning frim the tank when I lowered the sender im going to have a merd mechanic friend look at it tomorrow . ive had snowmobile where the injection failed and left me stranded , I had a Yamaha oujtboard with no troubles though so im just thinking now ill see how it looks from the mechanic. this is a newly bought motor btw

Some of the older Mercs had composite gear drives which are known to go boom.
Not on the drive either.

no offense:

every time I read one of these discussions,i laugh !

why ??

seriously,why would you want to remove the oil injection ?

as long as I've been in this business,20+yrs,i've yet to see an engine fail ,due to the oil injection system.motor failure is often misdiagnosed - detonation,from a lean fuel condition/overloaded situation,is often diagnosed as a failed oil pump - other problems have caused powerhead failures as well...example,overheating,running the motor,while it's overheating...

Johnson/evinrude "vro" pumps,when the diaphragm fails,the oil flows like texas - causing an over oiling situation...

Yamaha/merc - these are a little different - the way old,mid 80's merc had a gear problem,the gear would slip - the alarm would sound,alerting no oil,for a brief shot - this was the symptom...

do the systems fail ? anything mechanical can and will fail,yes,they will fail - but,the alarm system has a check.when the key is turned,the alarm sounds,this is the check - no sound ?? check it out...

the failure of oil injection systems,is like the great ethanol myth - both are old wives tales -like storing a battery on a concrete floor...

do yourself a favor,leave it alone...

Ive got a manuale that says its got plastic gears.its a 2001.
I dont even know if it working is why

I have a Tohatsu 90a that is suppose to have a bullet proof injection system. I removed the injection sytem just for peace of mind. Im glad I did.

You mean to tell me I can store my battery on concrete? :D I been sticking boards under them for years. Not sure what you mean about the ethanol myth but don't think you will talk many boaters into liking that water adsorbing fuel line rotting stuff.

I had a 2001 merc 200 a couple of years ago and had mine took off too. A very knowledgeable merc mechanic said he would do it if it was on his boat, but he build high performance outboards for racing so there is a different mind set there. I always liked to run my oil a little heavy due to better lubrication, but it dose hurt performance some to do this.

I still have a couple of munched plastic oil injection gears that I save to show people and I've seen a ton of them parting out 2.0, 2.4 and 2.5L Mercs in the last 8 years.

In an unrelated topic Angelina Jolie removed both of her breast to prevent breast cancer. I think that with her doing that and others removing oil injection systems under the guise of preventive measures I will have my testicles removed so I will not get testicular cancer.

had mine taken out the best thing to do no more smoookingruns like a new motor was getting to much oil before thanks tim

Hey Drty, I can think of some better reasons to get a nutectomy then testicular cancer. :)


strick

well my mechanic friend said the module that controlled the alarm wasnt working and cost about $300 he also suggested removing it as he has the same motor and did the same. the pump has a plastic gear and has a reputation of failing

I don't know about the 2001 model, but both my 91 and my 96 Merc V6s have only one alarm module. It controls both the oil alarm and the overheat alarm. If the 2001 is the same, you need a new alarm module regardless what you decide on the oil injection. You're way more likely to overheat the engine than you are to lose the oil injection. I'm sure you can get an aftermarket or used module for way less than $300.

Obviously, there are different philosophies on the oil injection. To me, I guess a Merc without oil injection is a little like Angelina Jolie without mammary glands.

Keeping my nuts for now,
Dave

my heat buzzers warning works when grounded it alarms and I also have a temp gauge on along of it

Also had it removed from my 1988 mariner in 2002, used it mixing the oil in the gas until 2004 and it's still in use by the next owner. Only problem I had was when I put in 20 ounces of oil in the rod holder by mistake.

Was this before or after happy hour...:eek::eek::cool::)

I used to have a shop on a lake in NH next to a gas dock I smelled strogn gas one day a new teen worker put gas in a rodholder until the bildge pump kicked on and spread fuel all acrros the surface of the bay, he was lucky the pump didn't spark