Its something simple.

In most cases of been sitting and will not fire...the oil in the regulator and possibly the HS needle has gotten gummed up and thick. Here is one trick that works.


Open the HS needle up about 3 turns more than it normally runs this means like 4-5 turns open. Remember your original setting.

No GLOW attached. Got to full throttle. Run it with a started like you are trying to start it. AGAIN NO GLOW connected.

Spin it for maybe 30 secs or maybe a little more. It should get the fuel flowing through the engine and clean out any gunk that has turned to gel.

The problem is the methanol and Nitro will evaporate and then all that is left is the oil....Some fuels will do this worse than others.

Once it gets wet...you should see a drip or so from the carb...but likely you will hear the engine change in its rpm as you spin it with a starter.

Close the HS needle back to its starting place....Then go to idle throttle position and apply glow and start.

For the first few minutes of running just warm the engine up slowly...don't slam it open to full power just let it run at a high idle. Don't get too concerned if the mixtures seem off just run it to warm things up. Once it gets heated up the gelled up oil with clear out of the nooks and crannies and it will run like it did before.

Troy Newman
Team YS