2000 opti 150 pulling oil from reserve tank instead of

[ctoolman]

2000 opti 150 pulling oil from reserve tank instead of

the main tank??<br /><br />of course the guardian system is beeping its butt off too...main tank is full,it started this yesterday while cruising along,main tank had 1.9 gallons but i still topped it off,checked the reserve tank and it had pressure on it after the motor was shut down,then i bleed it and it still is using the reserve tank..also the reserve tank is producing oil,i have not filled it but it keeps getting more oil in it??<br /><br />model #1150d84yd.<br />301 hrs..

 

[Perfidiajoe]

Re: 2000 opti 150 pulling oil from reserve tank instead of

Re: 2000 opti 150 pulling oil from reserve tank instead of

The tank under the cowl feeds the engine, the external tank feeds the tank under the cowl. The tank under the cowl needs to be full when you start or the system don't work. Also helpful to know what engine we are looking at! good luck, Joe

 

[Perfidiajoe]

Re: 2000 opti 150 pulling oil from reserve tank instead of

Re: 2000 opti 150 pulling oil from reserve tank instead of

Sorry did not see 2000 Opti. in the post heading, Joe

 

[Coolmaker]

Re: 2000 opti 150 pulling oil from reserve tank instead of

Re: 2000 opti 150 pulling oil from reserve tank instead of

Start the engine (cowl off) loosen the cap on the tank under the cowl, it should fill with oil, and then overflow abit. Tighten the cap back being sure not to overtighten it as it will crack if too tight. Then the system should take the oil from the reserve tank to the one under the cowling. If not, then there may be a loose line between them, the line from the crankcase is leaking, or the top on the reserve is not tight. Be sure to check the gaskets in the caps too..

 

[ctoolman]

Re: 2000 opti 150 pulling oil from reserve tank instead of

Re: 2000 opti 150 pulling oil from reserve tank instead of

thanks coolmaker...i did that yesterday and it bleed out fine(2-3 times)but it still refuses to go back to the main tank..caps are tight,no leaks that i saw anywhere...the only odd thing is the little white check valve on this motor was darker in color(like oil was in it??) compared to my port motor..other than that i saw nothing obvious,i did get the extended warr for 2 more years but i was hoping for a quick fix,since i have plans for next weekend..dealer has boat but probably won't get to it this week...too busy..funny never to busy to sell ya 50,000 just to busy to fix it???<br /><br />i hope this is not an indicator of what owning a boat is going to be like...

 

[rodbolt]

Re: 2000 opti 150 pulling oil from reserve tank instead of

Re: 2000 opti 150 pulling oil from reserve tank instead of

on the opti oil system its very similar in the feed method to the rest of the V6 line.<br /> it uses crankcase pressure through a check valve to pressurize the remote tank. the air pressure in the remote tank forces oil through the feed hose to the engine tank. there is a filter in the feed line that can clog. the little brass fitting at the bottom of the tank on the feed line is actually a check valve. in the event of a filter or line restriction it will open and vent the engine tank to allow oil to continue to flow to the engine oil pump . this will continue until the feed restriction is lifted or the system is pressurized. there is no oil return from the engine tank to the remote tank. at least not an engineered return. however due to the design of the oil tank, its like a teapot, some engines will drain the engine tank back into the remote tank after sitting tilted for several days. there is a cure for it, its uniqe to several other merc V6's. are you sure your looking at a check valve or a filter ? if your remote tank is refilling you are either forcing fuel/oil from the crankcase into it or the engine tank is draining back into it after sitting tilted. a common complaint of the drain back is a low oil alarm shorlty after start up and a continual need to bleed the air from the engine tank to allow the remote tank to refill it. the cure for that is simple.

 

[ctoolman]

Re: 2000 opti 150 pulling oil from reserve tank instead of

Re: 2000 opti 150 pulling oil from reserve tank instead of

rodbolt..<br /><br />the check valve i was talking about is on the line that comes out the top of the engine tank,the hose comes down the side(4-5 inches) then does a 90 degree turn with a brass elbow(this is a 3 way connection,one end is left open,like a test hose could be applied on it??) there is a white(check valve)that feeds back to the main tank..??is this the check valve in question or is there another one?<br /><br />the tanks have not drained back when sitting,this suddenly happened while cruising sunday...<br /><br />thank you for your help..i hope i have not confused you to much..

 

[gss036]

Re: 2000 opti 150 pulling oil from reserve tank instead of

Re: 2000 opti 150 pulling oil from reserve tank instead of

That loose end is actually an overflow drain. The other end should go back to your reserve onboard tank I would think. That is the line where the oil comes into to your onboard tank, if it is like my 200. I hear what you are saying, but as Rodboldt indicated above, the reserve tank is pressurized and pushes the oil into the onboard tank. Go to this url and look at the oil system. http://www.biggerhammer.net/mercury/factory_manuals/

 

[ctoolman]

Re: 2000 opti 150 pulling oil from reserve tank instead of

Re: 2000 opti 150 pulling oil from reserve tank instead of

thanks again...you guys are awesome!!!!!!!<br /><br />i went to the site and i figure it is 1 of 4 things...hoses are blocked or pinched(not likely,they've been this way for 300 hrs but i will look real close again),restricted oil filter in remote tank(possible but the engine tank keeps getting filled up from remote so there is some flow)or , oil filter in line before the engine oil reservoir is stopped up(if so then how could the tank keep filling it self) or #4 this is the one i really think it is faulty pressure check valve in engine at end of black remote hose..<br /><br />not sure why the dealer kept saying he was going to have to order a sensor???<br /><br />the greatest part!!! is due to this site i found the manual for this motor..cool...

 

[rodbolt]

Re: 2000 opti 150 pulling oil from reserve tank instead of

Re: 2000 opti 150 pulling oil from reserve tank instead of

the brass 90* fitting is the check valve that will allow air into the engine tank if the inline oil filter between the engine and remote tank clogs or the line becomes restricted. if you did not allow air into the engine tank in the above situation the oil would not flow out of the engine tank to the oil pump so the level would not drop to indicate a problem via the alarm system. it would just smoke a power head. the little white one is a filter with a flow arrow. the arrow should point to the engine tank on the filter between the tanks.

 

[ctoolman]

Re: 2000 opti 150 pulling oil from reserve tank instead of

Re: 2000 opti 150 pulling oil from reserve tank instead of

UPDATE...<br /><br />after checking everything mechanical,it is now back at the dealer check valves are working fine,filter is clear but alarm is still blasting away and now it has limited power to 4%...this is very frustrating....<br /><br />i see a repower in my future and it won't be mercury's...when you buy used you have no option on power but i knew better...

 

[ctoolman]

Re: 2000 opti 150 pulling oil from reserve tank instead of

Re: 2000 opti 150 pulling oil from reserve tank instead of

last update..<br /><br />it turns out it was the sensor in the resrve oil tank on the motor,its a magnet and it brakes down over time...<br /><br />heres a trick they told me about,it may help someone in the future...<br /><br />if you have the same problem i did(guardian protection with buzzer,) and you know everything mechanical is working,take a strong magnet and tape/tie wrap or what ever onto the reserve tank near the sensor,it will fool the guardian and you can continue on until you get a new tank ordered up...BUT PLEASE MAKE SURE YOU OIL SYSTEM IS WORKING PROPERLY....WATCH THE RESERVE TANK IF IT IS NOT GOING DOWN THIS IS A SAFE TEMPORARY REPAIR TO GET YOU HOME,IF IT IS GOING DOWN AND NOT PULLING FROM THE REMOTE TANK DON"T DO THIS...you may forget and run out of oil..not good..<br /><br />pretty cool,since i carry my manual with me,i will throw a magnet in my tool box for the next time.... <br /><br />thanks for all the help here..