1994 225 Yamaha SWS- 2 stroke.

[Lloydramdeen]

Hey Guys, any suggestions here ?<br /><br />I disconnected the VRO system and mixed fuel at 50:1 and motor ran well for a year. I do a lot of trolling and after 4 to 5 hours at 6-10 mph the motor shuts down. After that its a hastle to come ashore, but after restarting and priming the bulb several times I get home eventually.This is beginning to be a regular occurence . Other than this , the motor runs well at high speed.I am satisfied that there is no restriction of fuel. Do you suggest I go a little leaner on the mixture ? I used plugs # BR8HS-10 but the last time I did not adjust them . Could this be the problem as well? Is this the right plug ? Also what is the remedy for foul plugs, Do you replace them?<br /><br />Thanks.

 

[Lloydramdeen]

Re: 1994 225 Yamaha SWS- 2 stroke.

I did not want to sound so confident!<br /><br />Could the problem be something else ? In my mind, I feel that my long hours of trolling has something to do with it.

 

[Bill@Bayracer]

Re: 1994 225 Yamaha SWS- 2 stroke.

Wahoo, NGK plugs that end in 10 are pre-gapped from the factory. You stated you do alot of trolling? I would either power tune the motor or run some Yamaha ring free or quick clean through your fuel system. Heavy trolling tends to leave two stoke motors with an abundance of carbon build up. Any of the products mentioned will do well to re-store power, once your plugs are fouled pitchem and put some new ones in there. Remember when pre-mixing your oil it always better to error on the part of to much than not enough. you'll find you will change more plugs but the motor will stay together.<br /><br />Bill

 

[Lloydramdeen]

Re: 1994 225 Yamaha SWS- 2 stroke.

Thanks Bill.<br /><br />Will do as you say ..wont see the boat until weekend again- a real pity ! No work no boat!. Is the "quick clean" an ordinary stuff that I get at the auto store ? Or from the Yammie dealer?

 

[BRIAN03]

Re: 1994 225 Yamaha SWS- 2 stroke.

I think you need to stick with YOUR Suzuki's Bill. Yamahas are a different breed. Please we don't need any help. This is two-stroke YAMAHA country here.

 

[rodbolt]

Re: 1994 225 Yamaha SWS- 2 stroke.

hello<br /> wahoo<br /> man ya took a nice motor and made a scow pusher.<br /> part of the problem is with the 50 to 1 at low speeds.<br /> that is why the oil injection works so well.<br /> if you must miss the oil ratio go a touch light on the oil unless your going to run at max rpm. or better yet learn to mix large quantities of fuel and oil and do it right. if ya cant mix it then reinstall your oiling system. too much can hurt as much as not enough it just takes a bit longer.<br /> is this a 3.1 litre or a 2.6 litre engine?<br /> post the entire model number or desribe where the t-stats are located. if they are in the cylinder heads then its a 2.6 if they are in the block at the top its a 3.1.<br /> let me know and I can give better advice.

 

[Lloydramdeen]

Re: 1994 225 Yamaha SWS- 2 stroke.

Thanks Rodbolt..<br /><br />The reconnection of the VRO is a No-NO at this time. I did not store the kit when I pulled it off and I would not be able to find it.<br /><br />So I am going to have to learn how to mix the fuel for the time being. From the dealers receipt, the serial number is L225TXRS 62KUL-700179. The tank holds about 100 gallons( A - 24 ' Proline w/a) . There is about 50 gallons in it now at the already 50:1 mix.Perhaps I should thin this out by adding 10 gallons of unmixed fuel and go 60:1 in the future. What's your take on the matter ? I rarely take her up to high RPM anyway..maybe 10/15 minutes at 4500 to test if shes taking it. <br /><br />The "ring free" additive Bill spoke about is available at the dealer here.<br /><br />Do you think a 25 hp Yamaha -2 stroke would be too heavy for a kicker on this boat? Would a 15 work in rough weather conditions? The bracket is one of those EEZ-IN and it says "20 hp maximum".<br /><br />Thanks Much<br />Wahoo

 

[rodbolt]

Re: 1994 225 Yamaha SWS- 2 stroke.

hello<br /> dont worry about thinning the oil. make sure you consistently mix fuel and oil. this means mixing about a quart in a 5 gallon can then addining it to your main tank. but you have to be fairly precise about how much fuel your tank will hold to know how many times to do that. that was the whole reason why yamaha developed such a nice system. can I ask why you removed it?. anyway I have not accesed the computer at work and it will be thursday before I can. I am hesitant to give advice until I can make a positive ID on whether its a 3.1 or a 2.6 litre. and either I have to go look it up or you have to tell me where the t-stats are located.and I have to take my dad in for some surgery so I wont be playing with the pooter for a few days.<br /> good luck and keep posting

 

[Lloydramdeen]

Re: 1994 225 Yamaha SWS- 2 stroke.

I wont go to the boat before weekend to tell you where the thermostats are located ..so thats fine with me..hope your dad has a speedy recovery ?<br /><br />A quart to five gallon, wouldnt that be too rich?

 

[rodbolt]

Re: 1994 225 Yamaha SWS- 2 stroke.

hello<br /> wahoo51<br /> you cannot just dump the oil and then fill the tank. sooner or later you will end up with a lump of oil or worse no oil mixed with the gas. so you have to pre-thin it. mix a quart to 5 gallons then add 7 1/2 gallons more. remember 50 gallons of gas and 1 gallon of oil is 50:1 or 2%. sorry if it confused ya.<br /> good luck and keep posting<br /> more gallon

 

[rodbolt]

Re: 1994 225 Yamaha SWS- 2 stroke.

hello<br /> I looked up a L225TXRS today on parts smart. it shows it to be a carburated 225 3.1 liter. this motor had some quirks. the least of which is if the t-stats leak or dont shut tight then it will cause the engine to run cool and the carbs enrincner circuits to open. makeing the motor run rich. it also shuts off spark to one cyl at idle and 2 cylinders between 850 and about 1500 rpm.<br /> I dont have my other tech guide so I may not be precise on the top rpm of the CCS mode.<br /> check the spark plug cap resistance. unscrew the red cap from the wire. should be 5.0 ohms.<br /> another problem can be stator related. I fought one of those motors to a standstill last year. found that after an hour or so stator voltage to the CDI dropped to about 50 volts. almost enough to spark but the plugs would foul.<br /> but check your heads to make sure the t-stats are working dont replace anything unless you know its bad. and be careful if the tech is not properly traind the V76 smart system will whomp them.<br /> good luck and keep posting

 

[elcamino12sec]

Re: 1994 225 Yamaha SWS- 2 stroke.

Sounds like your engine is loosing its prime and thats why you have to keep pumping the primer bulb. Go to you local dealer and get a fuel pump rebuild kit and rebuild the fuel pump. The kit is cheap and if you took off the oil injection your self, you should be able to rebuild the fuel pump with ease. The kit comes with new springs and plates. At low speeds you engine does not make as many puslations than at high speeds, so if the fuel pump has wear, it will not pump enough preasure as it did when it was new. Your problem has nothing to do with the oil injection, try the fuel pump and go fishing again.

 

[Lloydramdeen]

Re: 1994 225 Yamaha SWS- 2 stroke.

Rodbolt.<br /><br />Got you loud and clear on the mixing of the fuel. What I do now is 3 pints to a 15 gallon container then I siphon it to the main tank. Not much of a difference from what you suggested. I will mix the first gallon with all 3 pints then add the rest.The end result is still 50:1.<br />I disconnected the VRO as the boat was laid up for a while and the system was in need of servicing. The techs here are are not as great and work on a trial and error basis.If you know what I mean.<br />I have printed your postings and will have have him to go thru an elimination exercise this weekend. <br />Thanks.

 

[Lloydramdeen]

Re: 1994 225 Yamaha SWS- 2 stroke.

Elcamino12sec<br /><br />Thanks for your response .Will pay close attention to this area as well. Will not rule it out. I dont know if this could be the problem as the first 3-4 hours of trolling is usually fine.No priming of bulb not even at start up before leaving the docks. The priming of the bulb comes naturally when a problem occurs.like an elimination exercise you see. On the first stutter you usually do those basis stuff..check for water in the fuel, prime bulb, unscrew tank pick up line,among other things.<br /><br />Will let you know !<br />Thanks for your help.

 

[rodbolt]

Re: 1994 225 Yamaha SWS- 2 stroke.

wahoo<br /> I do a bit of work in venezuela.(rio chico area) so I am aware what ya say. sometimes the techs are not real savvy and sometimes parts just aint there and some times both. the fuel pumps are very easy to rebuild. its not much more to just buy 3 pumps. next time it dies try to determine if the carbs are out of gas or not. sometimes the pumps get weak and just wont move enough fuel at low speeds. although that usually shows up as I can idle for a long time then punch it and it will almost plane and die.<br /> I am looking to possibly relocate to a warmer climate. any places there pay for a tech that has been certified in yamaha,mercruiser,volvo-penta(gas) merc,mariner and force outboards? and most my work is jonny rudes <br />good luck and keep posting

 

[Lloydramdeen]

Re: 1994 225 Yamaha SWS- 2 stroke.

Rodbolt<br /><br />There is only one dealer here in Yamaha, Rudes and Johnson. To be successful here you would have to do a business of your own, bring in your tools, some of the fast moving spares. There is a demand by the hotels, individuals, etc. The techs here usually have a problem of troubleshooting, either that they are not properly trained or they dont have the right tools to diagnose the problem. So you would have an edge over them. This little problem I have could take them 3 or 4 visits to the boat and youre lucky if thats it. Kinda frustrating. We are lucky that these bigger engines are less problematic. My last engine was a new 200 johnson and I had it for 7 trouble free years.<br />There is one guy out of Ft. Lauderdale, he lines up a number of jobs here by placing an ad. in the local papers and he flies down once in a while for 2 weeks to a month depending on...<br /><br />Your could try this at first and see what potential there is.<br /><br />I am looking for a good used kicker 15/25 hp. are they easier to come by on that side? They are a scarce commodity in florida.<br /><br />In Nov last year I visited My daughter in Atlanta, we drove down to the Tennessee Aquarium ( Chattonnoga) that is next door to you I suppose. I could not believe the size of those catfish.Never seen anything like it before.<br /><br />I bought a sea anchor on line from a lady in NC. She makes them. Is that near to you ? Myrtis Easterlin.

 

[Lloydramdeen]

Re: 1994 225 Yamaha SWS- 2 stroke.

Rodbolt,<br /><br />I found the VRO assembly.Actually all I took off was the storage tank from the transom and disconnected the wires and the oil hose.. That small tank on the engine is still there. I had to remove a circle clip from the inside of the cylinder and use a tie strap to hold up the sender to prevent the alarm from going off when i discontinued the system. So I have to find that clip. There is a loom from the storage tank with 4 wires , I will have to find where it was connected. The hose for the oil is pretty straightforward. <br />Also I found I was using a third market oil ..even though is is rated TC-W3. will get Yamalube as well.<br />There is this guy who knows Yamaha very well. has some traing from an Outboard school in Florida. We will be taking a look tomm. will keep posting.<br />thanks.

 

[Lloydramdeen]

Re: 1994 225 Yamaha SWS- 2 stroke.

rodbolt<br /><br />Anyway advice on the reconnection will be appreciated..by tomm..if you come on line tonite.<br /><br />I know you fell strongly about the reconnection.<br />Thanks

 

[Lloydramdeen]

Re: 1994 225 Yamaha SWS- 2 stroke.

rodbolt,<br /><br /> I am reporting to you my findings:<br /><br /> 1.we checks the t-stats and they are opening and closing as they should.We tried them in hot water. We cleaned them up and put them back in.<br /><br /> 2.the two tops spark plug resistor(red caps) are reading in the 27.0 range. meaning we have to change them. TDT-132<br /><br />3. the fuel pumps are fine.<br /><br />4. re. VRO- we could not find where the loom from the remote tank was connected.it has 4 wires in it.It was cut off and no plug at the end. My tech will be checking the diagram on this particular model.He used a yamaha diagnostic light to check the electrics but did not get any response, presumably in view of this broken circuit.<br /><br />In the meantime, I have ordered the "red caps" and will be using yamalube and see how she runs . Will this help to improve the situation ?<br /><br />Thanks

 

[Lloydramdeen]

Re: 1994 225 Yamaha SWS- 2 stroke.

Rodbolt<br />we were doing fine.. you left me high and dry !