_Hier_

iTrader: (19)

Engine has been running like a champ until last Saturday...

To my suprise I noticed the highspeed needle moving while at 1/2 throttle on the bench... basically vibrating loose to an extremely rich setting...screw is backing out on its own..

WTF... I am new to nitro and know that cannot be good...

So what is the fix? new needle?


Thanks for the help.

brc358

iTrader: (18)

Just buy the small "O" ring that fits on the needle

wingracer

iTrader: (24)

What motor?

_Hier_

iTrader: (19)

kyosho gxr 28

I did pull the needle apart and found a #60 o-ring that hopefully solves the issue.

Thanks for the advice.

infernoman2008

i had the same problem but both the low speed and high speed did the same thing, i called kyosho and they told me that the o rings that were used in that motor were defective and they know about the problem , they gave me a part number for a the o rings it comes as a carb maintance kit
(KYO74023-17 ) hope this help PM me if you need more help i been through this for a while

Roelof

Meanwhile you can cut a small piece from a fueltube to use as O-ring. Most of the times this will work.

TeamSok

True, put a piece of fuel tubing on my sons GT1 at the KC HOA and have not had no problems since then.