too much oil?

[Cory9584]

Im mixing 24:1 and i cant get the bike to stop backfiring, despite getting lots of fuel. could it be im running too much oil?

[sheerider1026]

Im mixing 24:1 and i cant get the bike to stop backfiring, despite getting lots of fuel. could it be im running too much oil?

damn! 24:1?? at that ratio it is probably fouling the plugs making it misfire and backfire.. thats too much oil. i run mine at 50:1

[Bansh-eman]

depednig on what oil your running you should be mixing at 32:1 to 80:1... all oils are differant but 24:1 is way rich

[Cory9584]

im running yamalube, i wanted to give it a little extra oil to break it in but i guess i went a little overboard.

[Bansh-eman]

when you breakin a motor you should not give it more oil then what your running. it is nessessary for the metals to to seat properly. by giving it too much oil they tend to get less then desierable seating and this lowers your compression.

[2strokespirit]

I run at 25:1, like keeping my motor lube, I do cross country, much more reliable. I run good quality Castrol power 1 fully synthetic. I do long shots of wide open throttle, NEVER foulded a plug, the exhausts tend to be a LITTLE wet if riding very slow. Wiseco, however do say on some of their 2-stroke pistons that you should mix a little richer for the first gas tank, I do believe there is a little bit more friction at run in periods, so mixing a bit richer is fine. At the ratio I mix, well, I don't because its rich enough. I don't care what who say, Yamaha who is a company that build these machine say in their owners manual run at 24:1. Why would they say that, for peanuts?. I know allot of people run mixture of 50:1 and way over, but I said this before, its much harder on ring and bearing wear, I did this tests with the same oils over the last 7 years. The ring wear on allot of these machine with the richer ratios are a lot less and don't tell me my air filter is sucking sand.. Allot of people also believe the crap of the less oil in your mixture the more hp.. This is true up to a point of about 1:32 if I am right with A Graham Bell did all the dynos on 2 differant bikes and 2 or 3 differant oils. The YZ125/RM125 delivered up to 0.2Hp more on a ratio of 20:1 and 25:1 over 50:1.

I know alot will say, 0.2hp, what the heck, but it does show something...

[bonzai272]

I am wondering the same thing...My motor is stock with T6 pipes, no air box, Toomey 2:1 intake, and the carb is jetted for this. I simply follow the owners manual and run 24:1 Yamalube....should I be mixing less oil even though Yamaha should know best?

[foxracing350]

24:1 WOW i run mine at 40:1

[bonzai272]

Im just following the owners manual is all. But after searching around on here, I think im going to drop to 32:1 and see what happens. seems like most can agree on this ratio.

[Wildcardracing]

40:1 yamalube 2r here. If its jetted for 40:1 and you're running 32:1 you'll burn it down lean.

[cvbadass]

I hear 40:1 and 32:1 so i mix 36:1 with no problems, check your plugs, and see how wet the exaust tips get.

Edited February 15, 2008 by cvbadass

[yamaha04]

if Yamaha had there way they would tell you 1:1 ratio. they simply just want to sell the most oil they can. i run between 32 and 36:1 never had any problems