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Are you using fresh gas? I had a yard sale wood chipper that "was
just used last month" when I bought it. Rebuilt the carb and it
would run with carb cleaner sprayed in the intake, but then die. I
drained and replaced the gas and it ran fine. The other thing to
check is that the fuel pickup is still at the bottom of the tank.
Had that problem when I replaced the fuel hose on a string trimmer.<br>
<br>
Brian<br>
<br>
<div class="moz-cite-prefix">On 7/24/2020 12:33 PM, Scott Hall
wrote:<br>
</div>
<blockquote type="cite"
cite="mid:CAK73_u4oeb+bVJ5hPuqtRwsq7Dx5U6m6SVsjGQU1svZ85vnixw@mail.gmail.com">
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<div dir="ltr">I have a Troy Bilt 4-cycle backpack leaf blower,
the older version of this thing:
<div><br>
</div>
<div><a
href="https://www.troybilt.com/en_US/leaf-blowers/tb4bp-ec-backpack-gas-leaf-blower/41BR4BEG766.html"
moz-do-not-send="true">https://www.troybilt.com/en_US/leaf-blowers/tb4bp-ec-backpack-gas-leaf-blower/41BR4BEG766.html</a> </div>
<div><br>
</div>
<div>I need intelligent more experienced folks to advise me
before I slip into insanity.</div>
<div><br>
</div>
<div>The past year or so the choke has lost effectiveness--you
used to start it as directed: pump the primer bulb a few
times, choke on full. Start. Choke to 1/2 until warm, then
choke full-off.</div>
<div><br>
</div>
<div>At first it wouldn't start with choke full-on, I had to
start it on half-choke. Then 1/4-ish. </div>
<div><br>
</div>
<div>At the same time, the throttle became more of an an/off
switch. It would bog at anything other than idle. If I open it
full, it would die. And it never achieved full-power.</div>
<div><br>
</div>
<div>Note: the choke is an actual choke--a plastic plate slides
over the air intake on the carb.</div>
<div><br>
</div>
<div>This sounds like something that needs a carb cleanin',
right? So I did. Took it apart, soaked it in carb cleaner,
re-assembled. </div>
<div><br>
</div>
<div>I also replaced the fuel intake line and fuel filter--a
weird little thing, looks like a pumice stone on the end of
the fuel line. </div>
<div><br>
</div>
<div>Worked...better. Not back to new, but better. For a day. <br>
</div>
<div><br>
</div>
<div>Now it won't start at all.</div>
<div><br>
</div>
<div>There's just not that much to this carb. I blew it out with
compressed air, chased the passages I could, etc. There's just
not much there...there.</div>
<div><br>
</div>
<div>What's making me question my sanity is that this happened
on my riding mower last year too and I similarly cleaned that
carb, which was similarly simple and it absolutely would not
run again until I just bought a new carb and replaced it.</div>
<div><br>
</div>
<div> So here's the question: what am I doing or not doing that
I can't clean a small engine carburetor? Is there some secret
air passage on small engine carbs that I'm not reaching? I
tool them completely apart. There were no idle jets, or
enrichment circuits, or...whatever. Just a hunk of metal with
a few small holes. What on earth would make the new one better
than the one that's on there?</div>
<div><br>
</div>
<div>I feel like this should be so simple and I'm missing
something so basic. <br>
</div>
</div>
<br>
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