Trx 2.5r help

[obochoman]

I have a Trx 2.5r on my nitro ruslter that is almost knew (got it earlier this summer) I did the proper break in prcedure and thought i had a good tune but i fiddled with the hsn and then it was running way to hot (steaming).

The next step I took was to set it back to the factory defalts (hsn 4 turns out, lsn flush with housing). It starts and runs with this tune but It gets way to hot, 350 degrees F with no exaust. I have tried to tune it by the chart in the Nitro forums with no avail. The best I got was it to idle at 230 degrees but when I gave it any gas it would die.

I have checked both the engine and fuel tank and lines for air leaks but everything was sealed (although) I get the occasional air bubble.
Anybody know what is wrong or how I could fix this?

thanks

 

[Zdragon71]

Did i read this right? You have no exhaust on it?

 

[EXTREME1]

what % fuel are you running?my revo done the same thing.try 5 turns out hsn flush on lsn.i run sidewinder 30% and do after run maintence.

 

[obochoman]

I have a muffler on it, I was meaning to say there was no exaust or blue smole coming out of the muffler. as for fuel I'm running the traxxas 20% and put in after run oil in the engine after every run.

 

[Mn Monster]

sounds like it's running lean(hot temps and no smoke trail), turn your HSN in small increments and see if that helps. what kind of a temp gun are you using? do you have air flow holes cut in your lid? also you might check your break set up to see if it's binding or dragging .

 

[ozziii]

Always make sure you have a smoke trail right through the rev range, sounds like its way to lean. You will need to richen both the LSN & HSN to get smoke from low to high revs.
Temp guns are good to check temp just to make sure your not getting to hot but having a smoke trail should be more important. I have never owned a temp gun or used a temp gun & never had an engine die from being to hot. I just go by feel or you can put a bit of spit/saliva on the cooling head, if it sizzles its to hot, if not then it should be right as long as there is a smoke trail.

 

[obochoman]

Thanks all! i got it tuned today after a little fiddling. I sealed up my carb with that liquid gasket stuff and set the tune to factor settings. I had to richen both the Hsn and lsn a small ammount but now its running. I have cut the windshield out of my body but I ran it without the body for ease of tubing (tuned it a little on the cool side to compensate for heat when thhe body is on. I also changed my exhaust pipe from this plastic one i got with the 2.5 adapter kit thing so the 2.5 would fit in the rustler to an aluminum one I had it when it had the trx .15. It might have had somthing to do with the temp outside as it is around 30 degreese.