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Old 01-10-2011, 07:59 AM   #1
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Default what would cause truggy to stall in the middle of a run

Hey all, looking for some help here. I recently noticed that randomly during running my truggy it will just cut off. It doesn't rev up before dieing, it just stalls. It happens when I am not on the gas I believe, like rolling into a corner.

I would've thought an idle issue, but when I start the car it idles fine for over a minute.

What could the cause of this be?

Thanks
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Old 01-10-2011, 08:02 AM   #2
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Hey all, looking for some help here. I recently noticed that randomly during running my truggy it will just cut off. It doesn't rev up before dieing, it just stalls. It happens when I am not on the gas I believe, like rolling into a corner.

I would've thought an idle issue, but when I start the car it idles fine for over a minute.

What could the cause of this be?

Thanks
If it is happening when you let off the throttle, first thing to check is the clutches and bearings. Thena beyond that check the glowplug, if not then then check tune, then if none of the above works, time for a new piston and sleeve or a squeeze on the old one.
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Old 01-10-2011, 08:11 AM   #3
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Dont forget to check your linkage setup, make sure the carb is not closing while applying the brakes or letting off the throttle.
I have seen where the idle gap would be fine at idle, then when throttled and let off, the carb would spring back closed or almost closed then it would return.

This could cause problems also.

You do not want carb play beyond(behind) the idle gap.
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Old 01-10-2011, 08:13 AM   #4
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Originally Posted by mgtmadness2007 View Post
Dont forget to check your linkage setup, make sure the carb is not closing while applying the brakes or letting off the throttle.
I have seen where the idle gap would be fine at idle, then when throttled and let off, the carb would spring back closed or almost closed then it would return.

This could cause problems also.

You do not want carb play beyond(behind) the idle gap.
Hes right, forgot about that one.DUH!
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Old 01-10-2011, 08:26 AM   #5
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Originally Posted by mgtmadness2007 View Post
Dont forget to check your linkage setup, make sure the carb is not closing while applying the brakes or letting off the throttle.
I have seen where the idle gap would be fine at idle, then when throttled and let off, the carb would spring back closed or almost closed then it would return.

This could cause problems also.

You do not want carb play beyond(behind) the idle gap.
I agree. I was going to also add that your idle gap is too low. Try getting the car fully up to temp(car completely saturated with heat) before adjusting. Once fully heated, you'll see your idle is too low...
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Old 01-10-2011, 02:05 PM   #6
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+1 on clutch bell and shoes, bearings.

it doens't take much to stall these nitro motors. on the gas, its more forgiving, at idle, it doesn't take much to stall these motors out. thats why many people use a bare finger.

then rule out the linkage, and apply the brakes 100% and make sure the idle isn't being pushed beyond the gap required for idle. this most likey would stall the engine.
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Old 01-10-2011, 02:10 PM   #7
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+1 on clutch bell and shoes, bearings.

it doens't take much to stall these nitro motors. on the gas, its more forgiving, at idle, it doesn't take much to stall these motors out. thats why many people use a bare finger.

then rule out the linkage, and apply the brakes 100% and make sure the idle isn't being pushed beyond the gap required for idle. this most likey would stall the engine.
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Old 01-10-2011, 03:47 PM   #8
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I had a similar issue and I always set my idle gap when I first get a new engine. So I knew it was not that. If your bottom end needle is too rich this will happen. Lean out the bottom a little.
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