Gordy
Well-Known Member
No problem. If you have anymore questions, feel free to ask.
Carbon build up on piston top
- Thread starter SanTanfan
- Start date
Chainlube
Well-Known Member
That's all normal running conditions for just after break-in, including the plug. Now you can switch to 32:1 or 6.4oz to a gallon of gas.
If the plug is getting hard to seal, then the crush washer is had it. Get a new plug. Any oil around the head is a sign of the head needing to be retorqued.
SanTanfan
New Member
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The oil is coming from the spark plug hole not the space between the head and the cylinder. The washer on the plug is fine, it's just that the top of the head is so close to my gas tank I can't get the right tool over the pug to tighten it down.. I have to do it by hand.
I got it cleaned up and it's running great, I got this engine from bikeberry and I am so happy I did. Thanks to everyone here for continued wisdom and info.
I got it cleaned up and it's running great, I got this engine from bikeberry and I am so happy I did. Thanks to everyone here for continued wisdom and info.
6.4 ounces is a 20:1 mix ratio, not a 32:1 ratio Chainlube...I understand that in Canada you are more used to the metric system over the Imperial measurement system...lol.
32:1 ratio is 4 ounces of 2 stroke oil to one gallon of gasoline.
Chainlube
Well-Known Member
Yea, what do I know? Back to 30 mils per litre.
Use a little kerosene or WD-40 with that wire brush if you are doing it by hand. Seafoam or B12 Chemtool is another option, but would be smarter to use if you take the cylinder off. Those solvents are good about breaking up carbon and other grit and will also act as a lubricant to help prevent scratching anything too badly. Just wipe everything up well with some towels and make sure everything is super clean before putting it back together, and I personally suggest wiping a little 2 stroke oil on the inside of the cylinder before re-assembly as well.
A little ash and carbon buildup is a normal thing for a lot of 2 strokes. If you are running on the rich side of things, which you are from what I can see, it will be worse.
One thing you can do to help reduce that was already suggested, which is running an ashless oil. I have been using VP Racing synthetic 2 stroke oil for a few years in all of my 2T yard equipment and motorized bike builds. It's a very clean running synthetic, and it's also easy to find at many retailers like WalMart, ACE, etc.
A little ash and carbon buildup is a normal thing for a lot of 2 strokes. If you are running on the rich side of things, which you are from what I can see, it will be worse.
One thing you can do to help reduce that was already suggested, which is running an ashless oil. I have been using VP Racing synthetic 2 stroke oil for a few years in all of my 2T yard equipment and motorized bike builds. It's a very clean running synthetic, and it's also easy to find at many retailers like WalMart, ACE, etc.
SanTanfan
New Member
- Local time
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- May 3, 2022
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Quick update
I was able to scrub it off with a bit of steel wool then blasted it with air. Runs great. I will go to a leaner mix on my next fill up, living in the Arizona heat I'm hesitant to use a leaner mix as I've had issues in the past. But that was with China doll motors, not this one I got from bikeberry.
I was able to scrub it off with a bit of steel wool then blasted it with air. Runs great. I will go to a leaner mix on my next fill up, living in the Arizona heat I'm hesitant to use a leaner mix as I've had issues in the past. But that was with China doll motors, not this one I got from bikeberry.
Chainlube
Well-Known Member
Where do you think bikeberry gets them from?
Yep, he has got a typical 66cc 2 stroke...it's a bouncy, cuddly little baby girl, China Girl that is...lol.
All of these little 2 strokes we use are manufactured in China, even my Phantoms are made there.
View: https://www.youtube.com/watch?v=_YC3sTbAPcU
