Engine dieing

[Tom14]

Hi all not long had my car, I have adventually tuned it and it's been running nice. Now it has started dieing after 5 10 mins of use but it starts first time and it will be OK for for 5 10 mins and the same happens. Any advise or help will be much appreciated thanks

 

[cbaker65]

Hi all not long had my car, I have adventually tuned it and it's been running nice. Now it has started dieing after 5 10 mins of use but it starts first time and it will be OK for for 5 10 mins and the same happens. Any advise or help will be much appreciated thanks

How does the engine act & sound before it dies?
If you can describe that ,it should give more info to us to better diagnose the problem!...

 

[Tom14]

How does the engine act & sound before it dies?
If you can describe that ,it should give more info to us to better diagnose the problem!...

Oh yes would help lol. I haven't notice it make any different noises it just dies like it stalls but it starts fine

 

[cbaker65]

Oh yes would help lol. I haven't notice it make any different noises it just dies like it stalls but it starts fine

It doesn't rev up slightly before it dies ? If it does ,then it maybe leaning out do to a fuel issue!
Or if there is a lot of smoke or a lot of eccess fuel coming out the exhaust ,then its flooding out ,then
it may need to be tuned!....

 

[olds97_lss]

Your in Illinois?

Nitro engines just don't care for cold and wet. Getting ice cold water or snow on the engine cools it off too quick and makes the tune horrible. The best you can do is tune it a bit rich, wrap the head with something that doesn't hold water (like a sock or cloth) and hope for the best.

I used to use a piece of bicycle inner-tube wrapped around the head to keep air from going through it in the winter. If it got wet, it didn't hold water against the engine like a small sock does. When it's dry out, but cold, then I'd just use a baby sock top.

Odds are, your running lean/hot.

I've had some of my most fun bashing with my brushless revo in the winter. So much easier than fussing with nitro in the cold.

 

[Tom14]

Your in Illinois?

Nitro engines just don't care for cold and wet. Getting ice cold water or snow on the engine cools it off too quick and makes the tune horrible. The best you can do is tune it a bit rich, wrap the head with something that doesn't hold water (like a sock or cloth) and hope for the best.

I used to use a piece of bicycle inner-tube wrapped around the head to keep air from going through it in the winter. If it got wet, it didn't hold water against the engine like a small sock does. When it's dry out, but cold, then I'd just use a baby sock top.

View attachment 93549

Odds are, your running lean/hot.

I've had some of my most fun bashing with my brushless revo in the winter. So much easier than fussing with nitro in the cold.

OK that makes sense as there was puddles where I was using it all I'll have to take more notice if there is smoke coming out on top speed. Thanks for your help. Don't suppose you know why I'm getting interference on a the steering servo when I doling and medium revs?

 

[olds97_lss]

What kind of battery are you using for the receiver? What radio do you have?

Usually, interference/glitching is noticed more on the throttle servo, at least for me.

If your running an AM/FM radio, it could be anything in your area. If your using 2.4ghz type radio, then it could be your servo got wet inside, receiver got wet, bad connection between the servo/receiver or battery/receiver. Could also be you got the power switch wet. They don't like water either. If your using a 4AA battery holder, they are prone to issues due to vibration. If your using a 4AA holder with rechargable NiMH cells, then your not putting out enough volts for the radio to work properly. If your using a proper 6V hump pack, then make sure it's fully charged. NiMH cells don't hold their charge well in the cold, so you will get quite a bit less run time when it's cold than you do in the summer.

 

[Tom14]

What kind of battery are you using for the receiver? What radio do you have?

Usually, interference/glitching is noticed more on the throttle servo, at least for me.

If your running an AM/FM radio, it could be anything in your area. If your using 2.4ghz type radio, then it could be your servo got wet inside, receiver got wet, bad connection between the servo/receiver or battery/receiver. Could also be you got the power switch wet. They don't like water either. If your using a 4AA battery holder, they are prone to issues due to vibration. If your using a 4AA holder with rechargable NiMH cells, then your not putting out enough volts for the radio to work properly. If your using a proper 6V hump pack, then make sure it's fully charged. NiMH cells don't hold their charge well in the cold, so you will get quite a bit less run time when it's cold than you do in the summer.

Just normal rechargeable batteries in the receiver and got a 2.4gz radio. I'll check that when I get a chance, it just seems to one thing after another with this car lol. The bloke had me right over when I bought it. The gearbox and bottom suspension support arms were held together with superglue , slowly getting it sorted lol

 

[olds97_lss]

So, just 4AA rechargeable cells in the AA holder? If so, try getting some name brand (energizer/duracell) normal alkaline batteries and see how it does.

4 rechargeable AA's have a running voltage of around 5V (each cell rated at 1.2V, fully charged under load puts them around 5V). 4.8V is the cut off for things to stop working. Combine the 4 cells only with cold temps and odds are, your riding the line. Getting a proper 6V hump pack and charger will help you out in the long run. I just run cheap integy/intellect/tenergy ones I get on ebay for $12-$15 and they hold up for a long time.

That said, the switch may still be the bad link. You can bypass the switch and plug the battery directly into the receiver to rule it out, but I'd do so with 4 alkaline cells instead.

 

[Tom14]

So, just 4AA rechargeable cells in the AA holder? If so, try getting some name brand (energizer/duracell) normal alkaline batteries and see how it does.
4 rechargeable AA's have a running voltage of around 5V (each cell rated at 1.2V, fully charged under load puts them around 5V). 4.8V is the cut off for things to stop working. Combine the 4 cells only with cold temps and odds are, your riding the line. Getting a proper 6V hump pack and charger will help you out in the long run. I just run cheap integy/intellect/tenergy ones I get on ebay for $12-$15 and they hold up for a long time.

That said, the switch may still be the bad link. You can bypass the switch and plug the battery directly into the receiver to rule it out, but I'd do so with 4 alkaline cells instead.

Yes just 4 normal rechargeable cells. Yes ok will try it tomorrow, thanks for your help

 

[cbaker65]

Yes just 4 normal rechargeable cells. Yes ok will try it tomorrow, thanks for your help

Low receiver batteries an also .if your servo's isn't water proof or if they collect moister inside them ,it will
cause them to start glitching!

I had my steering servo collect moister an it caused the wires inside to eventually corrode inside
an it caused the wires to come in soldered!

An also a fraid servo wire will cause a glitch!

 

[EvhCo]

This sounds a bit like a worn cylinder, but that's worst-case scenario.