Warm weather tuning!

[Nitro Rascal]

Hi can anyone help british weather is getting hotter by the day :thumbup: though this is normally a good thing I am struggling to tune my nitro stadium truck to prevent the engine stalling :thumbdown on hot summer days but the engine runs fine on colder days. I have attempted tuning the engine for warmer weather in the past but failed miserably. I will be very greatful for any assistance. Thanks.

 

[Candyman]

As a general principle, you would lean the engine out when it's hotter outside. That's because in hotter weather, the air is less dense, and the amount of air in your mixture decreases compared to cooler days. That essentially richens your mix (increases the fuel in the air/fuel ratio). So to compensate, you need to lean the mix a bit to reduce the fuel in the mix.

 

[Nitro Rascal]

Oh

I have been richening up the engine because I thought fuel burnt more easily in warm weather. Thanks for your help.

 

[alpinehyperlite]

What kind of temperatures are you trying to tune in?

 

[Candyman]

I have been richening up the engine because I thought fuel burnt more easily in warm weather. Thanks for your help.

That's the thing. Tuning for ambient temp is exactly the opposite of what you'd think. You'd think that when it's hotter outside, you want to richen the engine to cool it. But that just makes it overly rich and run like crapola. Don't worry about the engine temp. Having the right mix will keep it cool just fine.

 

[Nitro Rascal]

What kind of temperatures are you trying to tune in?

I guess around 30*c (thats hot for england) don't really know though.