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Old 08-18-2013, 09:43 PM   #1
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Default Ofna glx4 tuning help

I got a used of a gpx4 I'm trying to tune this stock engine. When I start the engine it will not idle the rpms wil go up then come down to normal then go back up without messing with anything. Seems no mater what I twek the engine will not idle. There is a small cut in the exhaust couple could that do it? Any help would help.
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Old 08-20-2013, 10:29 PM   #2
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Yes replace the exhaust coupler, also add a rubber band on your carby to close the carby as a fail safe. I have had a few HoBao engines that the carby action wasn't smooth causing me issues. Some people have replaced the carby to a Novarossi one as a solution and this has also helped with tuning. But remember this is a cheap engine so don't spend a heap of money trying to get it too run.

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