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Is the tip of your muffler very wet with un-burned fuel?" if so ,that could be a sign of not a hotter glow plug or fuel isn't burning do to % ,or fuel is bad!

Ok ,other than a new carb. ,the thing that I would try ,is the higher nitro count & different plug, I also see that its not too cold where your at ,unless you live on the side of a mountain! The carb. that I had to swap out was made of a composite material in which they start leaking where the...

Can you list all the things that you've tried? The engine should start an run fine if the tune makes a difference in engine performance , the only thing that I can think of ,is to get a whole new carb. ,I've had to do that on my Ofna hyper engine ,I used the Ae. 28 carb. ,they are reliable &...

If the things & tips that me & Olds suggested don't work ,then your engine could be wore out , maybe check for compression!

Its about the thickness of a paper clip wire!:cool:

That's a very good tip Olds!......:thumbs-up::thumbs-up:.......:cool: I've been out of the game too long to remember ,I'm glad your here!....:D

Well ,I'm in warm sunny California an always ran 30% ,I've tried a 20% 0ne time an my stuff just wouldnt run worth a hoot ,some of the engines I run are size Os 18 ,Ofna hyper 21 , an 2 Hpi 5.9's! An I also try to run my engines a little on the rich side to acomidate any type of heat or an...

I'm not sure how that works ,I've never removed shims before ,but have heard about shims being removed for different % fuel I think ,its been years since I read about it!! Also ,the type of glow plug matters as well ,the temp rating on the glow-plug!

How cold is it getting in your area? 16 % seems low ,I run 30 % .an have a few gallons through them ,my engines are getting up to 10 years old ,some are older! Your engine may not be burning the fuel right do to cold weather ,low nitro count , fouling plug ,or even leaky head or carb.! I would...

The needles them self could also be damaged ,they tell you not to over tighten them ,the hsn needle rides inside the lsn. When I adjust mine ,I try to throttle my carb at the same time of adjustment so it doesn't strain or wear on the needles! Try taking the needle out an rub some vasoline on...