Won't run off choke
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Won't run off choke
Can someone please tell me why this 503 will not run off choke??? Surely I'm not the only one that has had this problem.
Re: Won't run off choke
Not many here with 503 experience.Tango Bravo 1 wrote:Can someone please tell me why this 503 will not run off choke??? Surely I'm not the only one that has had this problem.
Re: Won't run off choke
If your 503 has a Bing carb, it really doesn't have a choke, in the conventional sense. It has an enriching starting carburetor, which only works if the throttle is fully closed. If you're running throttle up with choke on, the engine will stumble. Use the choke only for starting, keep the throttle against the idle stop until the engine warms up, and then close the choke before you open the throttle, and your engine should purr.
The opinions posted are those of one CFI, and do not necessarily represent the FAA or its lawyers.
Prof H Paul Shuch
PhD CFII DPE LSRM-A/GL/WS/PPC iRMT
AvSport LLC, KLHV
[email protected]
AvSport.org
facebook.com/SportFlying
SportPilotExaminer.US
Prof H Paul Shuch
PhD CFII DPE LSRM-A/GL/WS/PPC iRMT
AvSport LLC, KLHV
[email protected]
AvSport.org
facebook.com/SportFlying
SportPilotExaminer.US
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Re: Won't run off choke
And if it doesn't do as Paul advises? It is often an issue with the tiny jets within the carb being clogged or constricted by even tinier debris.
"Don't believe everything you read on the internet" - Abraham Lincoln
Re: Won't run off choke
True, but I always try the simplest fixes first!chicagorandy wrote:And if it doesn't do as Paul advises? It is often an issue with the tiny jets within the carb being clogged or constricted by even tinier debris.
The opinions posted are those of one CFI, and do not necessarily represent the FAA or its lawyers.
Prof H Paul Shuch
PhD CFII DPE LSRM-A/GL/WS/PPC iRMT
AvSport LLC, KLHV
[email protected]
AvSport.org
facebook.com/SportFlying
SportPilotExaminer.US
Prof H Paul Shuch
PhD CFII DPE LSRM-A/GL/WS/PPC iRMT
AvSport LLC, KLHV
[email protected]
AvSport.org
facebook.com/SportFlying
SportPilotExaminer.US
Re: Won't run off choke
When our older dirt bikes (carbs) did that, we always checked for air leaks between the carb/manifold/cylinder/head gasket first. Not knowing what a 503 is, if it's a 2 stroker, check the head gasket carefully. They have a tendency to burn out on 2 strokes, but are dead simple to replace. Oftentimes, it was just a loose bolt (bad vibrations) somewhere in the connection.
Re: Won't run off choke
It is.HAPPYDAN wrote:if it's a 2 stroker,
The opinions posted are those of one CFI, and do not necessarily represent the FAA or its lawyers.
Prof H Paul Shuch
PhD CFII DPE LSRM-A/GL/WS/PPC iRMT
AvSport LLC, KLHV
[email protected]
AvSport.org
facebook.com/SportFlying
SportPilotExaminer.US
Prof H Paul Shuch
PhD CFII DPE LSRM-A/GL/WS/PPC iRMT
AvSport LLC, KLHV
[email protected]
AvSport.org
facebook.com/SportFlying
SportPilotExaminer.US