stupid 2.5
 

guys,, i can`t get this thing to run right,, i spent all day at it and got it to run for 3-4 minutes before it cut out,, it burnt about 1/2 a tank in 3-4 minutes,,, it cut out and wouldn`t start again,,, it was boggy,, and really boggy toward the last minute of the run,, i wanna beat it up with a hammer,,badly,,,,,, please help

you need to reset your needles to factory specs. at start over again!!
screw your top needle in until it stops (easily,don't over tighten it) then back it out 4 complete turns :) then make sure your mid needle is flush with the inner lip on slide arm :D this should get ya started and once you get it running and get some heat in it you can adjust it :wink: :D

hey
 

Check if your glow plug is good and if it's too lose.

Do you want to borrow my hammer :lol:

And then remember that because the gas tank is higher than the carb....if you lean it out on the top part of the tank the bottom part will run too hot and stall.....if you tune it for the bottom half the top half runs too rich...

Re: hey
 

it cant be too tight.

yeah i did the stock settings a billion times,,,no good,, my glow plug is good, nice and orange,, i like the hammer fix,, works every time,,,,, well i screw with it till i can get a os .18,, thery supposed to be marty proof,,,but please don`t stop the tips i still want to get this thing running ,,so i can sell it,,

with that engine u cant really tune it until its got half a tank of fuel... it leans out then... also check for a crack in the tank (knocked my settings way off) or in the lines.....

what about the carb...is in clear and free? (not obstructed etc)

yup
1. check tank for leaks. dip it in water, plug one fuel inlet, hold cap and blow, look for bubbles.

2. check fuel lines for leaks.

3. make sure engine has compression.

4. check the nipple on pipe to ensure no leak

5. check carb is sealing. be careful where the fuel line goes into the part where the high speed needle is. they are nown to crack there if tightened down too much. also the seal at block.

6. make sure the engine backplate is sealed too. and the head is tight.

last choice I would rip the carb apart and clean it all out. my buddies heli was driving him nutz. he would fly it, tune it, run great then all of a sudden stall. we finally ripped the carb apart and found vibration had loosened off a thread where the carb is screwed on, and it fell inside and was fluttering in the low needle path.