I'd guess you're feeding them both from the same batch of two stroke
gasoline? I'll admit, I don't know for certain sure. But, it's a good guess
that since both display the symptoms, the culprit is what they have in
common, being your gasoline supply.
For science, please pour that batch of gas into your car's gas tank. Go buy
a gallon of premium, with no ethanol (if such can be found). Mix the oil,
and see if that works better.
That's what comes to mind. Hope that helps. Please write back, in either
Christopher A. Young
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I have a WEED EATER PE550 edger (with steel blade).
Also a WEED EATER FL21 (Lightweight string trimmer).
They both have a spark and good compression but only run for 5 - 10 seconds.
I took the carb off the PE550, blew it out with an air hose, then soaked it
overnight in 'carb cleaner'and blew it out again.
This made NO difference to how it ran so I bought a brand new carb. It,
too, made NO difference at all, so I bought a brand new filter which, again,
made NO difference.
Next I attacked the FL21 which also only runs for 5 - 10 secs. and replaced
the fuel lines. but still NO difference. I then blew out the filter but
still NO difference.
I would appreciate it if you have a suggestion for me.