140 Evinrude Pre oiled or not

[flkeysaqua]

I have a 73 19-6 with an 88 Evinrude 140 (shortstack) just bought the boat and it came with a pre oiling system I personally don't like the idea of trusting your motor to one more mechanical thing that could go fail but I believe the "fail safe" if you will for the system is working because about 5 minutes at 4500 rpms and the motor will shut off its not overheating p!ssin good steady cool stream. Any suggestions I more than like am going to take it off and just mix my own but I don’t know if that will mess up anything in the system fuel pump filter etc any feedback would be appreciated.

[slippery73]

Heres a low down on the VRO on your outboard. We've had two motors go due to faulty oil pumps, or sediment in oil injection lines, etc. So I go premix on everything now, its to costly to lose your motor when all you have to do is spend five more minutes when you fill your tanks.

http://continuouswave.com/whaler/reference/VRO.html

[flkeysaqua]

thats what I'm saying hell it doesn't even take five minutes and you know everything is done right and thats one less thing to go wrong thanks for your input Just checked out that link and it couldn't of been a better source if I wanted to keep the VRO and it kept saying how simple it was well sure its simple but just that many more step to insure your motor is working properly and why take a chance when it takes five minutes to mix yourself if anyone else has an input on the VRO dicussion i'm definetly open for opions like why i shouldn't leave a half of a tank of fuel premixed on my boat for long periods of time (a week or two)

[bdtsr]

See my post in the other thread. Mixing is up to you. Just a matter of choice, no right or wrong here. Pumps can fail and when they do they pump too much oil (OMC designed it that way). The VRO WILL NOT shut your motor off but a bad fuel pump side (both oil and fuel are in one pump) can if it can't keep up with the fuel demand. If the system is not maintained, garbage, water or other non-oil things can clog the oil filter on the motor restricting oil flow. My 1988 Johnson 225 that I retired (not to vro problems) had the original style VRO pump that had been working for over 15 years. I replaced that motor with another 1988 Johnson 225 with the newer style pump (was on it when I got it) and it works just fine. They MUST be maintained just like any other part of the motor. I forgot to mention in the other post that a fuel restriction as well as low oil, no oil and overheating should sound the alarm. Pop the motor cover, there is a tan wire going to the upper part of the port cylinder head. There should also be a connector (small one wire not big red one) you can undo. Turn the key on, undo the connector and short wire (from the big red plugside) to a clean paint free spot on the motor. This will test the overheat side of the alarm. You should here the alarm sound when the wire touches the motor. There is also a switch on the fuel/oil pump that senses fuel line vacuum. If the fuel line is restricted the switch should close and sound the alarm also. Now, when your motor dies, does it die out slowly like running out of fuel or like someone turned the key off? If it shuts down suddenly, touch the cylinder heads (both) at this time. Is either one HOT? You should be able to place your hand on the head for a short period without burning your hand. If the pee tube water is cold (it should be a little warm), you could have  stuck thermostat(s) (there are two). Let us know how you make out.

[Capt. Bob]

thats what I'm saying hell it doesn't even take five minutes and you know everything is done right and thats one less thing to go wrong thanks for your input Just checked out that link and it couldn't of been a better source if I wanted to keep the VRO and it kept saying how simple it was well sure its simple but just that many more step to insure your motor is working properly and why take a chance when it takes five minutes to mix yourself if anyone else has an input on the VRO dicussion i'm definetly open for opions like why i shouldn't leave a half of a tank of fuel premixed on my boat for long periods of time (a week or two)

Well you got real good info from Slippery and bdtsr so let me add this.
Mixing oil with fuel at a "50:1" ratio isn't doing it "right". Sure, outboards and many other 2 strokes have run this way for a long long time but it doesn't allow for the precise mix at all engine speeds. The latest Rudes are running at a mix of 100:1 (not at all times) so having a device that mixes the oil in proportion to the gas is a good idea. Good for engine performance, good for the environment and most importantly, good for your wallet.

As far as leaving the pre-mix in the tank, just be sure when you trailer to the ramp, you traverse some bumpy, potholed roads on the way.

Good luck.

[flkeysaqua]

Thank you all for your replies its always good to get as much input on subjects like this as you can. Bdtsr its wierd the motor will start running slower 4500 to 4000 once I notice that I'll back it down alittle then it will drop from 3500 or so to about 1500 in a second then shut off like you turned the key off its kinda hard to discribe I hope thats accurate enough. And thanks again for the link slippery read it from front to back and as soon as I was done reading it I did just that short the overheat sensor to the block and to a ground on the motor and nothing so I will have to find out whether or not the alarm is either working or not there at all be willing to bet its not there at all. And if the motor continues to acted up once I'm done with cleaning the tank replacing the filters oil and fuel/water and the fuel lines and running just a five gallon can of premixed I will definetly check the block like you said might still just for sh!ts and giggles. Also the water is 73 degrees right now so it should still be warm but after how long I meen all my speed boats started warm but that because they were usally 300+ hp which were all premix but since I now have a child and I'll never hear the end of it if I buy another I'll stick to fishing boats  

[bdtsr]

Based on what you are describing, your motor is running out of fuel. Pre-mix a 6 gallon deck tank and eliminate ALL hoses from the boat leaving only the motor from the original problem. Does it run fine now? Then the fuel line, filter or tank are restricting the flow. If the problem continues, the fuel pump is most likely bad. If you want to pre-mix forever forward you can buy the older style non-VRO fuel pump and install it.

[RebelYell]

..

I'll bet its a bad tank.  :twisted:

I just replaced mine on my 1990 200 Osprey. Those tanks ain't cheap, either.  :cry:

I sure hope that, for your sake, the tank doesn't need replaced but being that your boat is a 1973 19-6 there's a good chance your tank is fulla crud. Check your fuel/water seperator ( You do have one, don't you ? ) for gunk and rust.

Good luck man.

[flkeysaqua]

thanks again yeah I hope its not the tank either good news is I weld and can make my own for cheap enough the one good think about living in the keys the guy i used to work for (welding) shop is a good friend so whenever I need something I help myself but the good news the water seperater did have water a little crud not alot though not as much as there should be if the tank needed to be completly replaced but if i have to cut out a section and clean it out and replace what I need to if the tank line and new filter dont do the trick then ill replace the fuel pump with a older style without the VRO

[flkeysaqua]

so while doing some glass work on my boat yesterday I almost cut my finger off with a 40 grit flap wheel anyone say hamburger meat 15 stiches and it hit an artery    blood sweat and tears right

[RickK]

ouch