Super Tigre G90 won't idle.  
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All Forums >> Glow Engines, Gas Engines, Fuel & Mfg Support Forums >> Engine Manufacturers Direct Support Forum >> SuperTigre Engines Support >> Super Tigre G90 won't idle.
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Super Tigre G90 won't idle. - 8/18/2007 4:25:01 PM   
doubledee


 

Posts: 561
Joined: 8/9/2003
From: Callahan, FL, USA
Status: offline 		Bax,
I read your sticky on how to adjust ST engine. I have done all that but the engine won't idle.It is a G90 and runs just fine except when I throttle back the engine dies abruptly when it approaches idle speed. It acts like the carb barrel has been suddenly closed although there is still about an 1/8" opening in the throat.
Any suggestions?

Regards,
doubledee

I have also noticed when I try to adjust the low speed needle the throttle assy moves laterally slightly causing the engine to die abruptly.

< Message edited by doubledee -- 8/19/2007 9:49:21 AM >
       Post #: 1

RE: Super Tigre G90 won't idle. - 8/20/2007 5:10:22 PM   
Bax


 

Posts: 12663
Joined: 4/26/2002
From: Champaign, IL, USA
Status: offline 		It's normal for the carb barrel to move a bit when you try to adjust the idle mixture. However, the engine should still run when the throttle is still opened about 1/8". You need to make sure the engine has the idle mixture set wildly rich. That is, too rich to have any hope of idling. Then you must start at part-throttle and get the full-throttle mixture set. If the engine's broken-in enough, you should then be able to retard the throttle a bit at a time and work with the idle mixture. It will start to have effect below 1/2-throttle or so.

After all this, if your engine has more than a few hours' worth of full-throttle running, and will hold a top-end needle setting quite well, then there could be a problem with the carburetor. However, don't discount the fuel. We'd recommend a fuel with about 10% nitro or so with a synthetic/castor blend in the oil mix. Some blends of fuel, or fuels that have been sitting around and not well sealed, can cause difficulties.

_____________________________

Bill Baxter, Manager Hobby Services/Futaba Service/North America
3002 N. Apollo Dr. Ste. 1 Champaign, IL 61822 USA
Service Phone: 217 398-0007
Email: hobbyservices@hobbico.com

(in reply to doubledee)
       Post #: 2

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All Forums >> Glow Engines, Gas Engines, Fuel & Mfg Support Forums >> Engine Manufacturers Direct Support Forum >> SuperTigre Engines Support >> Super Tigre G90 won't idle.
Page: [1]





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