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HomeRC & PowerAircraftHelicopterEngines Plugs Mufflers Fuel › os hyper blows hole in top of pistion
10-27-2011 09:55 PM  6 years agoPost 21
joeyM

rrApprentice

langhorne, pa

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thanks for all the replys guys....well i didnt think i was running too lean because i did richen the needle after fixing the engine...also did check engine with temp gun...but im told by one of the replys thats not always a sure thing either....i never used a piston locking tool....the only thing i did was change fuels.....im ready to fix the engine again and ill make sure i dont have a lean run and see what happens now......thanks to all who replied ...Joe

cq cq cq de ka3cnc 30 or 40 mtr cw

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10-27-2011 10:06 PM  6 years agoPost 22
Gearhead

rrMaster

Vt

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hmmm,, can you post us photos of both Pistons ??

and does your Engine have a Squash Band (Shim) to seal the head

Jim
Buzz Buzz Buzz

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11-01-2011 02:31 AM  6 years agoPost 23
Rph1225

rrNovice

Perry Hall, MD

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I have actually had the same issue twice with this engine. Now after running for a minute or so on the first flight of the day, I land and place my finger on the side of the case right above the mount. If you can hold your finger there for about a second it is good. If you can't then it is too lean. I feel this is the best way, as it works on all engines and is fast.

Sunday Fliers RC

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HomeRC & PowerAircraftHelicopterEngines Plugs Mufflers Fuel › os hyper blows hole in top of pistion
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