nitrostam

My Feedback: (1)

i have a nitro stampede that i already broke in and have bout .5 gallons through but it dies when i pull the gas real fast and heats up over 300deg. in about 3min the fuel mixture seams to be right what can i do to help it

mmtecg

You might have to change the piston & sleeve

Go here to buy it. http://www3.towerhobbies.com/cgi-bin...&I=LXMHT6&P=ML

bigblock454XXL

My Feedback: (-1)

So if you nail the throttle to take off like a raped ape and it dies. . . . AND the temps are 290+ if your putting around, it sounds like you are way lean. Try leaning out the High Speed Needle at 1/8 turn intervals. Try some high speed runs then bring it back. Do that a few times til you can nail the throttle and it takes off. If that doesn't work, you may need to do an upgrade. Just my thoughts. Good luck to ya!

rooker

My Feedback: (1)

that is a 1/2 gallon and not 5 correct?  Unless you did not break in correctly I wouldn't think you need a piston and sleeve that quick?    I did have an engine that had the same symptons, but it was worn out, I wouldn't think yours is with only 1/2 gallon thru it.  Air leak?  Too lean?   I am sure more experienced ones can help you more, just wouldn't run out to get that piston and sleeve that  mmtecg suggested yet!! 

scoobs92

that sounds like its way too lean just cause of the temps he hits so quick try richen it a bit

only1battman

did you adjust the needles during break in??

nitrostam

My Feedback: (1)

all better 2 whole turs lean thanks

only1battman

Wait what do you mean that it WAS 2 whole turns lean or that you turned it two turns lean??  you should have richened it.

bigblock454XXL

My Feedback: (-1)

No, It's safe to say thst it WAS two whole turns lean. Which means he had to turn it, TOTAL, two whole turns rich.
Good Job NitroStam!!![sm=teeth_smile.gif]

only1battman

ya that is what i thought.  just the way he said it, it sounded confusing.

bigblock454XXL

My Feedback: (-1)

Yepper, You'll have that.

no1rick

My Feedback: (3)

For goodness sakes, if you're already lean, DO NOT continue to lean it out.
Start with the high spped needle at factory spec, I believe it is 2 1/2 turns and go from there. You are definetly lean right now from what you describe.
Remember to make adjustments in SMALL increments, use the 12 hour clock method. The 12 hour clock is 12 equal marks (imaginary) around the needle, move it only ONE mark at a time and retry the setting.
300 degrees is too hot, you should be in the 230-270 range for correct settings. I presume you're using 20% nitro, the Traxxas engines seem to like the Traxxas fuel best.
Make sure the low spped needle is at factory setting and DO NOT move it until you get the high speed workingproperly. The factory setting is flush with the inner shoulder of the housing.

dug44

My Feedback: (2)

Factory on a trx engine is 4 turns out on the hsn, 1 3/4 on the lsn, and 1mm gap on the idle screw...


Factory Needle Settings
If your factory preset carburetor adjustments have been tampered with,
use the following settings:
• Set the high-speed needle to 4 turns out
from closed.
• Set the low-speed needle so the screw head
(red in Fig. A) is flush (even) with the end of
the slide (yellow in Fig. A).
Always use the factory settings for initial starting. Only use these settings
when the factory settings have been lost.

copied out of the manual...

no1rick

My Feedback: (3)

DUG, You're right, for the 2.5 and 3.3 engines, but the original post didn't tell us which engine and the .15 is different.
Thanks for the update

nitrostam

My Feedback: (1)

i made it richer
i dont like the rubber eaxust do they make a metal one that still goes out the rear

dug44

My Feedback: (2)

start here...http://www.google.com/products/catal...d=0CDMQ8wIwAw#

skrankz

factory on the .15 is 2.5 turns out from closed on the HSN, cant remember the LSN setting ..