cy 29cc problem

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T

tnxman

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stratford ontario
not sure what to make of this please watch video and give me ur thoughts. as long as iam on the throttel is all good , let off all good , nail it again and boggs, and sometimes stalls. was running a walbro 813, just took it off and installed a 668 , with no change. do i have an air leak somewear? all new fuel lines aswell. my tank is only vanted through the standard fuel cap. do i need to install a 3rd fuel line for air?

link: of it running

http://s766.photobucket.com/albums/xx304/deerjamie/?action=view&current=VIDEO0057.mp4
 
sounds rich to me, and the poof of smoke after each throttle up,whats you oil mix at? and your carb settings
 
stock settings pretty much 1 1/2 on the high, 1 1/4 low aprox , 2 different carbs with lots of tunning and same problem. oil is amsoil injector mixed 25:1 .
40 mm oil to 1 liter gas 91 octane . I did just switch to this oil (posted in engine section with photo ) "is this oil ok". Ya know maybe thats my problem , maybe i should switch back to standard 2 stroke from the hardware store:rolleyes:
 
With a fairly standard engine - I ran a Zenoah G260RC 2-bolt on my FG MT before switching to the TS reed engine - I found the 'standard' settings on the Walbro 813 I fitted were too rich.
I had it at 1 1/4 LOW, 1 3/8 HIGH (a little here and there is no matter, all are slightly different) and ended up 1 1/8 LOW, 1 1/4 HIGH maximum.

Al.
 
so you at about 2.6 oz to the gallon, thats what called for injector oil, but your engine is not a injector fed, so that could be the issue, i'm "guessing" that could be the issue but i cant be for sure since i have never used injector in any r/c engine. try the chenge back and see what happens,
before you changed did it run fine?
 
The tear will begin today. Just installed a copper gasket, didnt use any gasket sealer, think maybe that is the issue:(
 
Last edited:
yup there was an airleak , rebuilt it used copper gasket sealer high temp (orange) i also noticed one bolt (lower bolt) on the ignition coil was missing , witch i believe to be causing my killer beer glitch , iam at work and never brought my battery charger with me and now my batt is dead . hope i can find time tonight to giver a run . i took it out back the store and fired it up and giver a few shots of throttel and ran and idled great
 
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