20 Most Recent Traxxas T-maxx 4wd Nitro Monster Truck Questions & Answers

first I would replace spark plug, I dont know how old your fuel is, but here are different types, some burn hotter, some cooler, but a gallon of that fuel does not stay good over long periods.

Hi,

Make sure the engine is running rich enough. If not sure reset it back to factory settings and then lean it out from there. Also make sure you have no air leaks in the fuel tubing from tank and muffler/exhaust.

You don't say if it is well used at all but could also be a sign of a worn engine piston and sleeve.

you have to adjust the trans set screw look up traxxas.com on how

yes if your rec got wet its most like fried replace and put it in a baloon zip tie the end around the wire and water proof servos

The roll cage should bolt to the chassis using existing holes, possibly where something else mounts to the chassis already. If you still have problems installing the roll cage you can contact integy tech support at http://integy.com/cp.html?n=tech-support, good luck.

The battery in the EZ Start wand might be going bad or needs completely discharged. Nicd and Nimh batteries will develop a memory if you just keep charging them over and over again. This will cause them not to take a full charge and not operate correctly. Some aftermarket chargers have dischargers built in or you can make one by soldering a couple of 1157 automotive tailight bulbs together with some wire and a connector that fits your pack. Plug battery into tailight discharger and let it go until the lights start getting dim. If you let it go too long you can damage the cells in the battery pack.

I believe the "fuel mixture screw" nabmommy is refering to is the High Speed Needle (HSN) on the carburetor. This is the largest adjustment screw on the top left side of the carburetor where the fuel line attatches to the carb. Tighten (clockwise [to the right]) to lean the fuel mixture in very very small increments, about 1/16th of a turn each time. Only lean the mixture out until you don't notice any improvement in power, then richen it back 1/16th turn to put it into the safe range.

If you lean the mixture out too much, to the point where there is no more blue smoke or it stalls when the rpm's are higher, you can overheat and destroy the engine very quickly. In this case richen the HSN (counter-clockwise [left]) 1/4 turn, make sure you can see a trail of blue smoke then try to lean it out a little at a time until you don't notice any improvements in power, then richen again 1/16th of a turn to make sure it runs safely.

You can check out your owner's manual for more detailed tuning methods and how to get the best fuel savings and the least damage.

P.S.- I also hope you did your full break-in procedure EXACTLY how Traxxas suggests during the first 5 tanks of fuel. I have two 3.3 motors for my T-maxx, the first one is junk (good for some parts) because I didn't follow the Traxxas way. It ran just fine, so I thought, until a friend of mine with the same truck drove mine a few times and told me that I was missing out on a lot more power. I bought a new engine and followed their plan and I was entirely SHOCKED at the difference with the new motor. Oh, and yes, I did have both of them tuned for perfect race fuel mixtures, running on Top Fuel 33% the whole time. The first engine I "broke-in" I used the method I've always used for nitro trucks. I was wrong.

I hope I could help clarify exactly what you need to do to get your T-maxx 3.3 running the best it can. Good luck and don't forget to rate!

call traxxas. they can help.might hold down butn. plug bat in then try to program.

If you use Lipo :
Buy a Lipo buzzer/low voltage alarm and use that instead, that vist only a few $. Attach it on tha balance plug on the battery. When it start making noise/buzz stop driving.

Using NiMH:
When the rc gets really slow - stop driving :-)

Traxxas website has copies of the user manual, parts list & exploded view schematics that you can view, print and/or download. Follow the link below: https://traxxas.com/products/models/electric/stampede-4x4-vxl-tsm?t=support

Electric or fuel

that means quit playing with toys and go to work.