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If the engine is running OK, then there is nothing to worry about. You don't need to do anything.
Well if you have muffler pressure on the engine, then the fuel would ooze out of the needle if it wasn't sealing very well. So it is likely OK. But if the little O-ring got damaged then you may have to replace it. Sometimes you can slip on a short length of extra large size fuel tubing to help center the needle valve if you are getting false needle settings when adjusting it. If the carb or engine has an air leak and then if you closed or choked off the carb intake with your finger the engine won't stop running. Do that carefully as the prop really hurts if you accidentally touch it when the engine is running. If you want, you can unbolt the carb and lay down a small bead of gasket sealant and bolt it back up abd let that cure overnight before you use it. But the engine could have an air leak from the front bearing seals not sealing correctly and that is harder to correct. Yeah the muffler oozes stuff out of all the joints. But I never worried about it. I started model airplane flying may years ago when model engines oozed fuel out of everywhere and left planes all messy after flying, so it doesn't bother me any. It is just part of the ritual to fly model airplanes having to clean them up afterwards. As to the muffler, I tighten up the screws, run the engine for a few minutes until it gets hot, turn off the engine and re-tighten all the screws again. That usually solves the problem of the screws coming loose. Some people have used silicon gasket sealant or something on all of the joints in a attempt to seal it up more. But I haven't tried it myself. |
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after sealing the exhaust with red loctite, it just works like a charm.
without onboard glow. without nitro. my friend mounted the engine in the plane, I did not know that the factory sealing was not good (the thin O ring and so on)
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Spent a whole evening hunting for this information. As of this date all ASP vendors are STILL using photos of the non-II version with the carb-located HS needle valve - here's a couple of screen captures I took to share with anyone with the same question...
youtube video showing remote needle valve is:
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