DO NOT RUN YOUR ENGINE. I just lost my oil injection on my Merc 175 HP
I have heard that the Sport Jet 200 prevents this some how? Any more info is greatly appreciated.' Taken from: Mercury - Tips for owners of 175 Sportjet engines 4. WATER HYDRAULICS Under certain conditions the 175 Sportjet engines can hydraulic or siphon water into the lower cylinders. This Factory Service Repair Manual offers all the service and repair information about Mercury Mariner 175 XR2 Sport Jet Outboards. The information on this manual covered everything you need to know when you want to repair or service Mercury Mariner 175 XR2 Sport Jet Outboards. Models Covered: Models: 175XR2 Sport Jet.
Jet and am currently having it repaired. They are going to have to tear
down the whole engine to check the internals. I too called Mercury and they seemed awfully complacent about the whole thing...strange when you think of what an oil shortage can do to a 2-cycle engine. I ran it back to the dock while it was intermittently beeping (every 2 mins or so) so am concerned about engine damage. The oil tank float sensor is a different device than the crank shaft sensor, so how would cutting the float sensor elimate the beeping for
the crank shaft sensor? By the way, the oil tank sensor can be unplugged (following the wires) which would do the same thing as cutting it, wouldn't it? We tried that, and we got a constant beeping. What you really want to do is to ground the blue wire (I think it is...I can't check since my boat is in the shop). This will bypass the float
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sensor but will do nothing for the crankshaft sensor. I'm not sure how to get around the crank sensor. If I were you, I would take the painful approach to the problem: park it until the shop checks it. Like Larry said, there might be a piece of gear bouncing around in there. Plus, if there's any engine damage, you might be partially responsible. Jeff H.
P.S. If I were you, in the future I would strongly suggest premixing some oil in the gas tank to give the engine some extra lubrication which might help if you encounter another oil injection problem. I learned that from this newsgroup and am hoping it has saved me a fried engine (THANKS LARRY)
xx wrote: > > Im getting an oil warning horn, that is caused by the sensor that > monitors the drive shaft rotation, in which the plastic worm gear has > failed. (a mercury known problem, SVC. BLTN. 2000-10) I've got a > scheduled appointment at the dealer, but its not for another month away. > I was told by Merc that I could run the boat, if I premixed the gas and > oil. I was also told by merc that I could disable the warning buzzer but > clipping the wire atop the secondary oil tank on the motor. (not the 2 > gallon reserve tank) I dont believe this, as all that sensor monitors is > oil level, and the secondary tank has oil in it. I believe there is a > secondary sensor that monitors the drive shaft rpm's, and thats what I > need to clip. Can anyone point me in the right direction here? Larry? > > Mark Turner
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