Help my axial .28 has a horn or it at least sounds that way...

[silverbird02]

Would a horn sound coming from my .28 mean to lean by way of air leak?
My buddys axial 32 does the same thing except it wants take off sideways with throttle closed...is there anyone out there that has had good luck with either engine?I know its a tuning issue but after 45 mins on each car by me and its just getting worse on the 32.The 28 i can drive but gives a full speed run then dies down to a slow crawl at WOT...any help would be great guys thanx,Tim

 

[bigjay]

what temps?

 

[silverbird02]

temps are fine till it makes the sound and revs up then so do the temps

 

[Scrogg]

So the temps are not fine. Google "RC Nitro engine tuning" and read, read......

 

[silverbird02]

But my point was the temps are fine until it makes the horn sound then they rev up like it just went lean on its own,the servo hasnt moved and noone touched the screws.Thats what the really strange thing is it doesn't do it all the time.I did read and read and then i read some more and still found nothing on that but ill try again.