Black goo

[GW's Motorized]

Does anyone know what the black oiley goo is that is coming out of my muffler? And how do I stop it.

 

[ismellnownlatters]

It's oil burnt

 

[Chainlube]

That's left over oil from the premix. You're probably still on break in mix and most of that will go away once you run some 32:1.

 

[GW's Motorized]

Ok, im not sure what exactly I'm running ratio wise, I took the measure bottle and added about a quarter inch over the 40:1 ratio line for a heavier break in mixture.

 

[ismellnownlatters]

I run like 40 to 1 i use synthetic

 

[GW's Motorized]

I run like 40 to 1 i use synthetic

I thought of running either 40:1 or 50:1 in my motor after a few tanks of gas, most likely going to be 40:1

 

[Chainlube]

I thought of running either 40:1 or 50:1 in my motor after a few tanks of gas, most likely going to be 40:1

You should look into the recommended mix, most of the bike engines don't last very long on leaner mixes.

 

[ImpulseRocket]

You should look into the recommended mix, most of the bike engines don't last very long on leaner mixes.

This.

Most engines out there recommend around a 30 to 36:1 ratio after break-in is complete. Often around 25:1 in hot weather.

It is possible to run a slightly thinner mix with high quality oils, especially synthetics, but I will always favor a heavier mix ratio over potential damage to a motor.

Also, if you are having oil buildup dripping form the exhaust, you can remove the cap and try to clean it out.

 

[DAMIEN1307]

Ok, im not sure what exactly I'm running ratio wise, I took the measure bottle and added about a quarter inch over the 40:1 ratio line for a heavier break in mixture.

Here is a screen shot of fuel/oil mix ratio chart below...for the first 2 tank fulls, use a 25:1 mix ratio...Once it's broken in, go to a 32:1 mix ratio.

25:1 ratio is 5.12 ounces of 2 cycle oil to 1 gallon of gas.

32:1 ratio is 4.0 ounces of 2 cycle oil to 1 gallon of gas.

(I use a kitchen use measuring cup to measure my ounces of oil)

Never mix your gas and oil in the gas tank as you will never get a consistant mix...I always use a 1 gallon gas jug filled with one gallon of gas and then I add the right amount of ounces of the 2 cycle oil to the gas and shake the mix vigorously in the gas jug before pouring it into the tank to ensure a consistant mix.

The best oil, (in my opinion for breakin purposes is Valvoline multi-purpose 2 cycle oil), for the first 2 tankfuls.

After breakin, I like to use full synthetic 2 cycle oil thereafter.

I use a high grade Amsoil Dominator 2 cycle full synthetic oil myself after breakin but many people use the Wal-mart brand 2 cycle synthetic which is probably OK as well...The choice is yours...lol.

Does anyone know what the black oiley goo is that is coming out of my muffler? And how do I stop it.

You can take off the bottom cap like ImpulseRocket recommended to clean out the excess oil out of the exhaust.
Once your on the 32:1 mix after breakin, that oil residue out the exhaust should dissapate accordingly over time.

 

[darwin]

I mix fresh gas with older gas then fergetaboutit, easy peasy the 4 stroke way.