ENGINE PROB, STUMPED
#1
ENGINE PROB, STUMPED
i have an Axe and i ahve blown the engine 4 times. it is still running well to an extent. when i start it it will go very well at low and mid RPM but when it starts to get to the top end it sputters and stalls. it is not to learn (smoke cloud coming out of pipe). this has got me stumped
please help!!!!!!!!!!!
thanks
dane
please help!!!!!!!!!!!
thanks
dane
#2
Tech Addict
i have an Axe and i ahve blown the engine 4 times. it is still running well to an extent. when i start it it will go very well at low and mid RPM but when it starts to get to the top end it sputters and stalls. it is not to learn (smoke cloud coming out of pipe). this has got me stumped
please help!!!!!!!!!!!
thanks
dane
please help!!!!!!!!!!!
thanks
dane
#3
I had one that acted exactly the same as what was described above. I just sold it to a guy who claims that he got it up and running by adding .02mm of shims. It had been a while since I messed with it but I could have swore I tried that before. Anyway it is worth a shot. Oh I was running 30% by the way and apparently they are not shimmed for that from the factory.
#4
Tech Addict
I had one that acted exactly the same as what was described above. I just sold it to a guy who claims that he got it up and running by adding .02mm of shims. It had been a while since I messed with it but I could have swore I tried that before. Anyway it is worth a shot. Oh I was running 30% by the way and apparently they are not shimmed for that from the factory.
#5
Tech Fanatic
iTrader: (10)
I think he is pulling your chain i tried adding shims and did not help.The motor was tight but as it got hot you would think it was worn out but it was still real tight.It would never flame out and would just keep getting hot as hell.Man i would tune this thing and think i got it its running great plenty of smoke good power untill you see the temps ready to hit 300 and shut it down and start thinking what else can i try to make this thing run.Its a shame the motor looks well made its nice to look at and the internals look very nice too.
#6
Tech Addict
Exergen temp gun its the best.Sorry but 300 F. is not going to cut it.No engine should run that hot and i dont think it would even stop at 300.This thing would hit that temp in about 3 min. so no way you could race that thing like that.This thing puking out smoke and running 300.Ive seen motors hit 270 on very hot humid days at the end of a long main with a almost empty tank.But for me 265 is the very hotest i would ever accept running a motor.
#7
Tech Fanatic
iTrader: (10)
Exergen temp gun its the best.Sorry but 300 F. is not going to cut it.No engine should run that hot and i dont think it would even stop at 300.This thing would hit that temp in about 3 min. so no way you could race that thing like that.This thing puking out smoke and running 300.Ive seen motors hit 270 on very hot humid days at the end of a long main with a almost empty tank.But for me 265 is the very hotest i would ever accept running a motor.
#8
Tech Master
iTrader: (66)
There are a variety of things it could be and without running it myself it would be hard to guess but I can give you a cheap idea to try. Lets pretend the engine is good all around and there is no damage or anything else that would keep it from performing properly. If you are absolutely sure that the engine is not to lean and has plenty of fuel everywhere and it only sputters and stalls in the mid to high end transition, the first thing I would try is to increase the temp range of the plug and run something on the hotter side. Sometimes the colder plugs work well most of the time but once in awhile you will find they cannot burn enough of the charge and as more and more fuel is pushed into the chamber, the plug gradually cools off to the point it is no longer hot enough to ignite the mixture and the engine will rich gurgle and flame out. If this is the actual problem, the engine will usually do this about 75 feet out of a corner or about half way down a straightaway. A hotter will usually cure that unless there is something else going on. A hotter plug can also do this but usually happens when the bottom end is too rich and when you intially get on the gas, the engine will flame from excess fuel entering the chamber and cooling the filament too much between strokes causing a similar senerio but this will usually happen after a fill up or if you let the engine idle a little too long and try to jump in it right away without giving the engine a chance to slowly clear out. Hopefully this helps and if it doesn't solve your issue, send it in and I will have a look see.
#9
Tech Addict
There are a variety of things it could be and without running it myself it would be hard to guess but I can give you a cheap idea to try. Lets pretend the engine is good all around and there is no damage or anything else that would keep it from performing properly. If you are absolutely sure that the engine is not to lean and has plenty of fuel everywhere and it only sputters and stalls in the mid to high end transition, the first thing I would try is to increase the temp range of the plug and run something on the hotter side. Sometimes the colder plugs work well most of the time but once in awhile you will find they cannot burn enough of the charge and as more and more fuel is pushed into the chamber, the plug gradually cools off to the point it is no longer hot enough to ignite the mixture and the engine will rich gurgle and flame out. If this is the actual problem, the engine will usually do this about 75 feet out of a corner or about half way down a straightaway. A hotter will usually cure that unless there is something else going on. A hotter plug can also do this but usually happens when the bottom end is too rich and when you intially get on the gas, the engine will flame from excess fuel entering the chamber and cooling the filament too much between strokes causing a similar senerio but this will usually happen after a fill up or if you let the engine idle a little too long and try to jump in it right away without giving the engine a chance to slowly clear out. Hopefully this helps and if it doesn't solve your issue, send it in and I will have a look see.
#10
hey guyys thanks for the off topic soutions LOL
it ran well for about 7 months (never famed out, plenty of power, everything perfect) but as soon as someone changed the tune it went to crap and never ran properly agian. and now i am getting a new X2 evo and a sport to replace my 10 month old standard cobra. is there anything that i can do to make this engine run. it is just the higher end on the RPM range that i am having problems with. have tryed shiming.
thanks
dane
it ran well for about 7 months (never famed out, plenty of power, everything perfect) but as soon as someone changed the tune it went to crap and never ran properly agian. and now i am getting a new X2 evo and a sport to replace my 10 month old standard cobra. is there anything that i can do to make this engine run. it is just the higher end on the RPM range that i am having problems with. have tryed shiming.
thanks
dane
#11
Tech Initiate
Check for airleaks and seal with silicone.