Mercury Tracker 115.....how do I bypass oil injection???

[fowl_natured]

I recently purchased a 94' Nitro 170 with a Mercury Tracker 115. The motor seems to run good and it is still setup with the original oil injection. Since I am unaware of the amount of hours on the unit I wanted to do away with the oil injection and mix my fuel to possibly save me a costly breakdown if/when the oil injection were to fail.

I know the Merc v6's have a kit you can buy to convert/bypasss the oil injection but I do not believe any kit is made for this particular motor.

Would it hurt to just to just plug the oil lines out of the tank and then mix the gas? If I were to remove the tank then I believe the low oil alarm would sound constantly unless someone know a way to wire around it.

Thanks in advance

 

[Maxz695]

Re: Mercury Tracker 115.....how do I bypass oil injection???

I wouldn,t recommend it but you can disconnect the float in the oil resivior to stop the alarm from sounding. at this point if all is good with the engine running follw the wires back to the engine and disconnec them. remove the allarm if you want but you may want to revert back so don,t cut the wires. As I said I don,t recommend this but I did answer your question

 

[jeffersondodson561]

Re: Mercury Tracker 115.....how do I bypass oil injection???

Here's the deal with oil injection...it works. People who say it doesn't are just wrong. I know they will talk about the plastic worm gear on the crankshaft but the fact that they have seen total loss of lubrication which by the time it happens and the operator is aware of it, their will be scoring on the top cylinders first followed by the lower cylinders and bearings with virtually no top end damage. What these guys are seeing is powerhead damage that fragments down and tears up the worm gear. If someone wants to argue me on this fine, but the guys that designed these motors are 1: engineers 2:used on other applications and 3: proven in factory R&D. The only thing you really need to worry about is the pickup screen in the remote (boat) tank, I have seen these have a gelatenous residue form on the screen...only have seen this when people don't use manufactures oil though...R&D my friend.

 

[Faztbullet]

Re: Mercury Tracker 115.....how do I bypass oil injection???

This series of engines have the oil injection driven off the bottom of crankshaft and have very few failures. What failures that do occur 90 % are from oil tank run empty or oil cap is damaged and water has entered oil tank. This model does not have a remote oil tank as its a onboard tank. The only other problems are the sight tube will cloud up and make it hard to read oil level.

 

[fowl_natured]

Re: Mercury Tracker 115.....how do I bypass oil injection???

Okay I appreciate all the info so far but my original question hasn't been addressed yet. What if I do not want to rely on the injection system and want to premix.

Can I just plug the lines coming from the oil tank and then premix after that? If doing it this way could there be any damage to any other components (are any of the components lubricated by the mix oil that need to stay lubricated)? Thanks

 

[Maxz695]

Re: Mercury Tracker 115.....how do I bypass oil injection???

DO IT Thats why I gave you the information on how to stop the alarm. If you have your mind made up to do this the engine" Can and Will ?"run on premix in the tank, but remember you must rock the boat to keep the premix mixed! If it hasn,t been used in a period of time it will tend to seperate. I hope you have a very small boat!

 

[fowl_natured]

Re: Mercury Tracker 115.....how do I bypass oil injection???

DO IT Thats why I gave you the information on how to stop the alarm. If you have your mind made up to do this the engine" Can and Will ?"run on premix in the tank, but remember you must rock the boat to keep the premix mixed! If it hasn,t been used in a period of time it will tend to seperate. I hope you have a very small boat!

Well no need to get lippy! I'm not an idiot and I know the motor will run on premix. That's not the question......My question was and still is how would be the best way to convert it (meaning...what do I exactly need to do with the oil lines out of the tank, cut them? block them?) I also ask in my last post if doing this could cause any wear to the oil mixer/oil mixing gear if no injection oil is present for lubrication.

 

[wavebuster1]

Re: Mercury Tracker 115.....how do I bypass oil injection???

now i have not done this before but i would block the lines and put them out of the way . cause its better to have something and not need it than to need something and not have it . but i would guess essicaly since it is a part of the lubrication system the abbsence of a lubricant will mess up the mixing gear

 

[Maxz695]

Re: Mercury Tracker 115.....how do I bypass oil injection???

and totally wear out the pump cylinder. This is shaky ground for this forum please read my signature befor attempting anything reguading this thread. you can loop a hose from one side of the oil pump cylinder so that is constatly recycles oil and protetc the pump from wear and corrosion. or two dissassemble the pump rempove the culinder and store it in oil. fill the pump with oil and block both the in and out of the pump. preventing corrosion. This has not been tested by me nor recommended by me it is merely a suggestion. I am saying this not because you may know what your doung but alot of people read these posts and may encounter serious damage to the engines because of this thread. other than blocking the line into the section where it is introduced for oil gas 50:1 ratio I see no other reason you cannot do this proceedure as far as I know. I am not totally sure but have read that your tempature alarm will still work but DO NOT Take this as a fact!!! I,m done with this thread any further information required to complete this attemp will have to be given by someone with more experience than I. Good luck

 

[Faztbullet]

Re: Mercury Tracker 115.....how do I bypass oil injection???

My question was and still is how would be the best way to convert it (meaning...what do I exactly need to do with the oil lines out of the tank, cut them? block them?)

First drain the oil tank and disconnect the 2 blue wire from tank to alarm module. Second remove the oil pump(2 bolts) and oil pump housing,remove the pump shaft and reassemble. Thired remove oil hose from check valve and cap check valve..

I also ask in my last post if doing this could cause any wear to the oil mixer/oil mixing gear if no injection oil is present for lubrication.

Not if done as above.........

 

[fowl_natured]

Re: Mercury Tracker 115.....how do I bypass oil injection???

First drain the oil tank and disconnect the 2 blue wire from tank to alarm module. Second remove the oil pump(2 bolts) and oil pump housing,remove the pump shaft and reassemble. Thired remove oil hose from check valve and cap check valve..

Not if done as above.........

So if the shaft is pulled out is it possible for the gear inside the motor to fall? Because I know that the V6 mercurys have a kit that has a shaft to hold the gear up from falling.

I wouldn't mind taking it to a marine mechanic but around here they don't show much promise. I am concerned with them doing something wrong.

By the way thanks for all the info so far. I appreciate the input. I really just want what is best for the outboard and feel that doing the conversion could eliminate a potential problem later on.

 

[TThornhill]

Re: Mercury Tracker 115.....how do I bypass oil injection???

i just did the same thing to mine after a rebuild. I just removed the shaft that is driven by the plastic crank gear and put the cover back on, and i believe its the purple wire that come from the oil alarm module that goes over to your main wiring terminal that needs to be disconnected so you dont get the beeping. granted mines a 150 so wiring color might be different. but after that you can remove whatever you want with the oil system. just dont forget to premix!

 

[1979checkmate]

Re: Mercury Tracker 115.....how do I bypass oil injection???

Here's the deal with oil injection...it works. People who say it doesn't are just wrong. I know they will talk about the plastic worm gear on the crankshaft but the fact that they have seen total loss of lubrication which by the time it happens and the operator is aware of it, their will be scoring on the top cylinders first followed by the lower cylinders and bearings with virtually no top end damage. What these guys are seeing is powerhead damage that fragments down and tears up the worm gear. If someone wants to argue me on this fine, but the guys that designed these motors are 1: engineers 2:used on other applications and 3: proven in factory R&D. The only thing you really need to worry about is the pickup screen in the remote (boat) tank, I have seen these have a gelatenous residue form on the screen...only have seen this when people don't use manufactures oil though...R&D my friend.

I'll agree - it works, when it is new. No parts are designed to last forever. It will eventually wear down, and fail. Will it happen before the rest of the motor goes kaput? Maybe, maybe not. It is the engineers job to design parts that are as cheap as they can be while still retaining *adequate* strength and reliability. If it was the engineers choice, they would make everything indestructable and out of the strongest materials. However, this is not how the real world works, its all about the $$. Yes, it is unlikely for this series motor to fail, however it is FAR LESS likely that premix fuel will ever fail.

 

[Faztbullet]

Re: Mercury Tracker 115.....how do I bypass oil injection???

So if the shaft is pulled out is it possible for the gear inside the motor to fall? Because I know that the V6 mercurys have a kit that has a shaft to hold the gear up from falling.

If shaft is removed it is impossible for gear to fail on this model. The V-6 Merc have a rear bushing that supports shaft and thats what block off kit does,prevent bushing from backing out, not prevent gear from falling.The 115 shaft is supported by the oil pump housing and does not have a rear support do to the helix design of gear and shaft, in other words the shaft always want to run away from crankshaft gear.

 

[fowl_natured]

Re: Mercury Tracker 115.....how do I bypass oil injection???

If shaft is removed it is impossible for gear to fail on this model. The V-6 Merc have a rear bushing that supports shaft and thats what block off kit does,prevent bushing from backing out, not prevent gear from falling.The 115 shaft is supported by the oil pump housing and does not have a rear support do to the helix design of gear and shaft, in other words the shaft always want to run away from crankshaft gear.

So if pulling out the shaft can cause the gear to fall then whats the point? Maybe i'm not understanding completely but if the gear inside the crankcase that drive the oil pump shaft can fall then wouldn't mess crap up if it falls internally?

In other words is there any possibility I will encounter any problems just by pulling the oil pump shaft out and premixing my fuel?

Thanks

Edit: So the actual crankshaft gear can't fall inside on the motor?

 

[TThornhill]

Re: Mercury Tracker 115.....how do I bypass oil injection???

the way my 150 v6 is designed, the gear will not fall out, its a two piece part that mounts around the crankshaft and is held together by an allen head screw. to my knowledge the mercury block off plates do just that, block all oil ports off to allow removal of all components and still have everything safely sealed off. they dont hold anything together