walmart 2 stroke oil in 150 yamaha

[deshet]

I have a 1994 or 1992 yamaha 150 2 stroke oil injected. The thing does not like to idle low, it all seemed to start one day.

I was running fine for about 10 miles and I got some gas while out on the boat. This was the first time that the boat had every had the new ethonal mixed gas in the tank. I also added the walmart 2 stroke oil to the automatic oiling tank. I have burned up all the shore gas. But the walmart oil is still in the tank.

I have used the walmart oil with no problems in my evinrudes are the yamahas more particular with their oil requirements?

Also my battery is a little weak though I don't think that should matter if the motor is already running.

The motor does not like to idle low, if I rev it up and throw it into gear it will run fine. Idling in Neutral it will cut every couple of mins regardless of how warm the engine gets.

The carbs have been rebuilt and the compression was checked and reported as good.

any one have any ideas?

I hope I gave enough information

Should I take all the oil out of my oil tank. The engine has a little over 800 hours on it.

thanks

[Skools Out]

sounds like your throttle cable has stretched just adjust the throttle cable to idle the motor up a couple hundred RPM's at idle. you can do it in the yard on a hose.

[deshet]

how many rpm's should I idle at on a hose?
I think I am around 800 know.

thanks

[Skools Out]

most of mine idle about 1000 to 1100 out of the water but once in water the motors idle about 750 to 900 and that's in neutral

[deshet]

Thanks for the quick response skools. I will adjust that rpm.

Do you think that I am fine running that walmart oil, I read in other place that is it made by penzoil.

thanks

[randlemanboater]

10 years ago when I had a 25 Grady with twin 200 Evinrudes, I went through a LOT of walmart oil. The Walmart oil was Mercury Quicksilver then, don't know now, but I'm sure its made by someone big to supply Walmart.

[Skools Out]

yeah it's Penzoil now, that's all i run but i run a little more oil in my mix than they call for to much oil won't kill as quick as to little. to much just slows you down a little bit but makes the motor last forever.

[randlemanboater]

deshet,

When you want to get rid of that crappy Yamaha I know a guy selling a 150 Merc that runs like a scalded dawg.

[phester]

skools, I use the Penz. synthetic blend 25% syn. and 75% reg oil....is that a good product?? 92 150 Johnson Oceanrunner

[Mulv80]

I agree with Skools, however I would adjust the idle while shes in the water because the motor needs the back pressure to accurately adjust the idle.