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I had the opposite on a 2stroke. Idled but stalled when you tried to rev...
First thing I did was pul the carb... Took it apart, cleaned it all nice, checked gaskets were seated nicely, cleaned needle etc etc... problem remained.
So I looked at everything else, cleaned the fuel tank, and replaced with nice E5 petrol mixed properly. Took the fuel filters, air filters and exhaust off and ran it like that and problem remained...
At this point it was pretty much stripped down to a fuel tank, carburettor and cylinder head, and of those 3 the thing most likely to go wrong is the carb.... Got a new one and it's run perfect ever since - musta got clogged somewhere I couldn't get to with cleaning
So might be the carb giving grief even if you have cleaned?
Which is why I posted up thread :I bought a brand new ((old stock) briggs and stratton engine cheap
It ran perfect, I parked it for the winter and come spring it would rev but wouldn't tick over
Tried everything, eventually bough cheap carb off internet and it's run perfect ever since
"So the two stroke has a spark.
so I ordered a noo carb."
Only trouble is, if you want it quickly you have to pay silly money like €70 for one.
I read an interesting fing ont tinternet saying that even if you run the carb "dry" there are still droplets of fule that sit in it and can then turn to the dreaded lacquerlike gunge. The bloke said you could use carb cleaner and blowing it through but then you would need to wash it in soapy water, rinse it and then blow it dry as the carb cleaner tends to just lift it a bit and move it slightly. In other words carb cleaner doesn't even do it all that much good, but impying that there was little else you could do other than buying some stuff called "Mechanic in a Bottle". So it may well just be an advert.
Others say put it in an ultrasonic cleaner.
But a lot of us seem to be having the same problem. I now have two with similar problems all down to the carbs.
I managed to buy some proper carb cleaner today, but I think the diaphragms in both may well be past their best as there are slight wrinkles in them, although they are whole.
and this is after using 98 octnae petrol rather than bog standard cheapo stuff. The instructions clearly state "lead free" other wise I might have gone for Premium or the equivalent of "leaded" stuff.