Alarm Yamaha 250 hpdi

[Reel Issues2]

I have a 2004 Yamaha 250HPDI. In 2007 I had a new Series 2 powerhead from the factory put on. I believe all the other accessories are from the original motor. I recently have had an alarm going off and shuting me down. It only seems to happen after running high speed after about 30 minutes. When it goes off, the tach gauge shows all 3 bars flashing minus the temp bar. I have taken off the caling and felt the heads, they are cool, and the temp bar is not flashing. The VST tank does seem to be warm. Is this a fuel pump issue, oil pump? Help please!

 

[cousinabe]

Re: Alarm Yamaha 250 hpdi

3 bars flashing = oil transfer issue.
check the remote tank oil filter on the outside of the tank.

you may be having an issue where the motor is using more oil than the remote tank/pump can transfer to the engine mounted tank. usually a clogged/gummed up filter on the exterior of the remote oil tank.

check it out.

 

[Reel Issues2]

Re: Alarm Yamaha 250 hpdi

Thanks cousinabe, I believe you are on the right track. I had an alarm last year. realized that I was running on low oil in the remote reservoir. It had already started to use the oil in the reservoir on the motor. I filled the remote tank thinking it would fill the tank on the motor. after another alarm, I looked and realizes it had not. I filled the tank on the motor, and everything seemed to be o.k. until now. I am seeing a very little drop over time in the main reservoir (like the remote tank is not keeping up). So I went and looked like you said. Here is my next questions. Is the oil filter you are referring to on the bottom of the stem that comes out of the remote tank? It has no external filter. I will have to take the tank out to remove the stem because of space issues. Also, I have noticed that my auxiliary pump does not seem to work (grey switch by the main tank). I turn the key on and hold the switch and nothing happens. What next? Thanks!

 

[cousinabe]

Re: Alarm Yamaha 250 hpdi

here's a good post that explains the system and testing procedures.

http://forums.iboats.com/showthread.php?t=310759

http://www.bwbmag.com/output.cfm?id=942859

http://www.thehulltruth.com/boating-forum/135755-yamaha-200-ox66-oil-main-tank-issue.html


The remote tank filter i am talking about is part#24
http://www.boats.net/parts/search/Yamaha/Outboard/2004/Z250TURC/OIL TANK/parts.html

 

[rodbolt]

Re: Alarm Yamaha 250 hpdi

find the restriction between the oil liquid in the remote tank and the engine oil tank. most likly its the remote tank filter.
I am starting to like cousinabe .
3 bars flashing indicates the remote tank switch is signalling the ECU that oil is avalible for transfer, the audible is signalling the ecu that the engine tank is critically low.
the ECU says that simply cannot happen and turns the transfer pump on for 180 seconds and flashes all three bars to alert the operator that the ECU is confused.
have someone listen very carfully at the remote tank with key on and switched depressed to see if its running.

 

[Reel Issues2]

Re: Alarm Yamaha 250 hpdi

O.K. ,First a little ego boost (cousinabe/ rodbolt). I am not worhty of your knowledge. Are you guys some Navy boat engine mechanics? I ask outboard mechanics in my area what the 3 bars flashing are, and no one could tell me anything other than bring it in so we can hook up the computer ( which means bring your wallet).
Cousinabe,I read the post you sent and printed the diagram on the oil system.Still baffled as to why the momentary switch would not pump oil to the engine tank with engine on or key on. I pulled my remote oil tank to find that there was quite a bit of oil behind it. Found the oil filter (#24 you referred to). Should I just replace that filter? Also upon inspection noticed that there are 2 wires that come from the pump on the remote tank that connect with the float cap on top of the tank. One is blue and the other is red. The red one is broken at the connector. It does not even look like there was a metal contact in it. It looks like just a piece of plastic that shoves into the female boot. Maybe there was metal in there but has corroded? Should the red wire be connected? Think this is my issue? Obviously the oil is still going from my remote tank to my engine tank. What next?

 

[rodbolt]

Re: Alarm Yamaha 250 hpdi

on your remote tank, you should have a square 4 pin plastic connector.
that connector will have a blue,pump ground, a brown, key on 12V a balck, remote level ground and a black red, ECU/yellowlamp or center bar flashing indicate.
someone may have monkey screwed your wiring.
in the navy I was a fire controlman, however some years back during the runup to dessert storm seems one of the vaccines did not agree with my body so I was medically retired in 1995.
now I am a master tech for yamaha and still certified for Volvo,mercruiser and crusader and indmarr and Barr.
thats why occasionally you will see an old post that says FC2 USN RET.
but getting back to your issue,
can you post a picture of the wiring at the remote tank?
what your describing isnt what should be there.
also look on your engine oil pump control arm and post us the letters stamped on the arm.

 

[rodbolt]

Re: Alarm Yamaha 250 hpdi

that float cap, its simply an on off switch. dont mess with it its working or you would not have 3 bars flashing.
however if one of the wires going to the transfer pump is broken then the pump wont run, the engine tank would go low, the low oil alarm would sond and as the remote is telling the ECU that plenty of oil is avalible for transfer you will have 3 bars flashing,an audible and RPM reduction.
this system is incredibly easy to test but you must understand there are 3 things always going on at once.
dont worry about being worthy or boosting egos.
you are and I have none.
except its like me and Will Sonnet .

 

[cousinabe]

Re: Alarm Yamaha 250 hpdi

No ego here, I just retain the posts that Rodbolt comments on.
I went the college computer science route... performance tune and make software run fast. I used to rip everything apart to see how it works and like to troubleshoot. Since I have a boat with twin yammies, I learned how they work and can appreciate someone who knows how they work and is willing to share all the ins and outs of them.

Hopefully you have found that faulty wire/connection.

 

[Reel Issues2]

Re: Alarm Yamaha 250 hpdi

Okay, forgive my color blindness. The 2 wires coming from the pump on the remote tank are brown and blue. There is a 4 pin connector exactly how you described.The brown wire coming off the pump to the 4 pin connector has a broken connection. I can't compress my photos down small enough to send them. Does it need to be connected? if so,why am I still getting oil to the engine tank? maybe it was holding on by a thread and that was causing the issue?Thanks, sorry to bother you so much! I'll try to compress my photo.

 

[Reel Issues2]

Re: Alarm Yamaha 250 hpdi

Thanks cousinabe and rodbolt. went ahead and replaced the wire connection and replaced the oil filter coming off the remote tank.dumped the oil out to make sure there was no sediment in the tank. I think my connection was just barely hanging on allowing some oil to be tranferred. When I pulled the tank it just came apart. Alarm must have been saying not enough oil is flowing. Anyway,have not run the boat yet, but I would be willing to say that was my issue. Thanks again for your help!

 

[rodbolt]

Re: Alarm Yamaha 250 hpdi

see? ya done fixed it .
no need to wait 3 weeks.
thats why I post, its nice to help others.
that and I am screaming busy.
but yamaha does NOT use any flow alarms.
strictly oil level alarms/indicates.