oil injection system problem

[jmrosenada]

Hi I have a 2000 Yamaha 250 EFI outboard.The oil tank mounted on the motor is not getting oil from the onboard tank. How can I trouble shoot this problem? Thanks in advance.

 

[Propnuts]

Re: oil injection system problem

First thing you can do is go back by the onboard or boat mounted tank. Have someone else turn on the key switch. Listen carefully and you should here that pump turn on. <br /><br />If you can hear it come on,(good thing) there is a filter\strainer that is on the outgoing oil flow side of that pump. Check to see if its clogged and replace it. Also check to see if the oil hose coming from that tank to the engine is restricted. Check were the rigging goes through the engine belly pan. They can kink there. Chances are though if the pump is running and you are not getting any oil in the engine tank that the strainer is clogged.<br /><br />If the pump does not run with the key on, you are going to have to do some other troubleshooting.<br /><br />PN

 

[rodbolt]

Re: oil injection system problem

depends on the coditions, if the engine tank is not low enough to set the alarm and the re,ote tank is full enough to not set the low remote indicate then the engine has to be running to transfer oil.<br />sea horse has the test list, however if you have the service manual and a voltmeter I can step ya through some of it.<br /> when was the last time the remote tank oil filter was serviced ?

 

[vinny2008]

Re: oil injection system problem

I have a similar problem, all my lights and alarms came on. Lucky enough it happened after I pulled back into the slip. Upon inspection the oil in the engine oil tank ran low, the supply tank is full- oil not getting to engine tank. I changed the oil pump at the main tank and the oil filter with no improvement. Any ideas?

 

[rodbolt]

Re: oil injection system problem

vinney, start a seperate post to include the model number. the V yamaha's had a few different systems.

 

[lynthomascr@yahoo.com]

Re: oil injection system problem

My problem is pretty much the same - have a 99 yam SX150X that doesn't take oil up to the reserve tank. My mechanic tells me I need an <br />ECM since the series I have is notorious for this problem and the control is this ECM thing - about 2000.00 for the part alone.

 

[rodbolt]

Re: oil injection system problem

only notorious if proper maint is not done. I have only6 seen 2 fail in 8 years and both were due to corroded pump motors.<br /> the ECU sets the ground on the blue wire at the tank. the ECU recieves information from the 3 position switch at the engine tank for pump off,pump on and alarm set. the swicth in the remote tank is normally closed and when it opens the low remote visual lights and no oil will transfer, same if a wire breaks.<br />tell me what color wires you have at the engine tank switch and does the oil pump work if the manual switch is used ?

 

[lynthomascr@yahoo.com]

Re: oil injection system problem

I just bought this boat from someone I thought knew what they were doing - so much for thinking. Even the surveyor remarked as to what a great job of maintainence the guy did. Yes, if you use the manual switch the pump will bring oil up to the reserve tank. As to the wires - well, I'll ask my mechanic (I know very little - read almost nothing - about fixing things. Thank you very much for your help!

 

[jmrosenada]

Re: oil injection system problem

Well, I changed the pump and filter on the onboard tank. Still no oil transfering to tank on outboard. The emrgency switch on the outboard tank is not working either, What now?? thanks

 

[rodbolt]

Re: oil injection system problem

ok, the engine has to run for normal auto transfer. however ,do you have a multimeter ?<br />if you will quit tossing expensive parts at it I can help but you have to have a multimeter.<br />and few jumper leads with alligator clips are right handy.<br /> at the engine oil tank, dissconnect the 4 pin connector, test for 12V with the key on engine off between the brown and black wires from the engine, then test for continuity between the black/red and black on the remote tank switch.<br /> if you have continuity the switch is operational. if you do NOT have 12V on the brown to black from the engine you will need to test the wires for continuity from the 4 pin connector hear the shift slide to the tank, occasionally they break.<br />there is also a spice several inches from the 10 pin connector where the brown wire will change to yellow that will occasionally fail. do some tests and let us know the results.<br />if they pass post it and we will continue.

 

[rodbolt]

Re: oil injection system problem

a simple overview of precison blend, when the key is on the brown wire at the tank is 12v+ the black is a signal ground, the blue tank wire is the ground path for the pump and goes to the ECU. the manual overide bypasses the ECU. the ECU will react to the engine tank switches in 3 ways. if the blue/green goes to ground the pump turns on and you will have continuity to ground on the blue wire,but the engine has to be running on 96 and up 2.6L motors and 90 up 3.1's.<br />to turn the pump off you take the blue/white to ground. if you take the blue/red to ground the oil lamp will illuminate,the horn will sound and the ECU will set RPM reduction. if the engine oil tank is dissconected during operation the horn sounds. if the remote tank goes low or the switch leads fail you will get a low level indicate on the tach and no automatic transfer but manual will still function.<br /> the 250 posted above, odds are great its NOT an ECU failure nor an engine tank switch failure because the manual bypass does not work, I would bet more on a break in the blue or brown wires.

 

[seahorse5]

Re: oil injection system problem

Here is the link to the oil transfer article<br /><br /> http://bassandwalleyeboats.com/output.cfm?id=942859

 

[jmrosenada]

Re: oil injection system problem

Well Rodbolt, You are "the man"!!!!! I changed the manual override switch brcause it was bad,No continuity whatsover. But that didn't fix my problem, So I traced the wires all the way from the sensor on the tank mounted on the outboard to the wireing harness coming into the outboard and sure enough the blue and the brown wire had become disconnected, so I heat shrunk all 4 wires after cutting off an inch due to corrosion and the oil pump is back to normal. Once again, cant thank you enough for all your wisdom and help!!!

 

[rodbolt]

Re: oil injection system problem

no worries.<br /> its amazing how many times a week I have to fix precision blend issues that other techs could not find.