Stihl 010 lacks staying power

[Beardie]

I have a puzzling problem with my Stihl 010AV. It starts beautifully from cold, often on the second pull, but after about 15 minutes it shuts down and won't restart. After about an hour, it starts up normally, and so on.

 

Any thoughts?

[peatff]

It's tired.

 

Or the coil is breaking down.

[Will Heal]

I have a jonsered that does this, I hope it's not the coil as I can't get another, so I'm trying other things first, impulse line- when it gets warms could make the rubber pipe soft giving less vacuum in the carb, fuel tank breather, changed it to a new one but that leaks fuel( cheap Chinese I think) into the air filter witch slowly floods the engine? Sorted that prob did a hole tank of fuel and seemed better but then pull cord broke. I'll try and remember to take it tommorow and try it again. If not I think it's the coil.

[wisecobandit]

Fuel tank vent possibly tho normally shows up a bit quicker than that. Just open the fuel cap when it stalls, retighten and see if it starts.

[spudulike]

Possible tank vent, it is also possible that the compression is borderline and when hot, it is too low for combustion so the saw won't start.

 

The coil may be failing when hot, worth checking the flywheel to coil gap as this can do it as well.

[Beardie]

Fuel tank vent possibly tho normally shows up a bit quicker than that. Just open the fuel cap when it stalls, retighten and see if it starts.

I've been doing that inadvertently every time I check to see it's not run out of fuel!

 

 

Thanks to all for the ideas, I will take it to bits and look at the coil and fuel line. I don't think it's the compression, as it feels the same on the starter cord.

 

Actually, I really, really hope it's not the compression, as this would be much more complicated than just buying a new bit and fitting it.

[spudulike]

I've been doing that inadvertently every time I check to see it's not run out of fuel!

 

 

Thanks to all for the ideas, I will take it to bits and look at the coil and fuel line. I don't think it's the compression, as it feels the same on the starter cord.

 

Actually, I really, really hope it's not the compression, as this would be much more complicated than just buying a new bit and fitting it.

 

If you take the cylinder off, support the von rod well as the big end rollers all fall out if you dont:thumbdown: