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claynz Derestricted Danger
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jaffa90 |
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jaffa90 World Chat Champion
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claynz |
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claynz Derestricted Danger
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jaffa90 |
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jaffa90 World Chat Champion
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claynz |
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claynz Derestricted Danger
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Robby |
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Robby Dirty Old Man
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WD Forte |
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WD Forte World Chat Champion
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claynz |
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claynz Derestricted Danger
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jaffa90 |
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jaffa90 World Chat Champion
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Posted: 21:36 - 06 Jun 2022 Post subject: |
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""""""" is when I come to a stop the engine dies,""""
""""""" other than dying while coming to a compete stop.""""
Do you mean dying WHEN coming to a complete stop???? |
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Nobby the Bastard |
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Nobby the Bastard Harley Gaydar
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claynz |
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claynz Derestricted Danger
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jeffyjeff |
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jeffyjeff World Chat Champion
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Posted: 09:07 - 11 Jun 2022 Post subject: |
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This makes no sense, as there is nothing about a carburetor that senses speed, only air flow. As I recall from fuel systems class (probably from about the time WD was a lad) a carburetor uses 7 circuits to fuel the engine over a range of operating conditions. Motorcycle carburetors do not use accelerator pumps, nor do they employ multiple barrels to enhance fueling at high flow rates. Therefore, 5 circuits are employed in a motorcycle carburetor: float circuit, choke, idle, off-idle (transition), and main metering (main jet). Often times issues manifest during the transition between circuits, and it seems that your idle circuit is failing to transition under certain conditions. Could be that it is underperforming every time you close the throttle, but you only notice it at a complete stop because that is when you disengage the clutch..?
The idle circuit operates under minimal airflow, and so small abnormalities will be amplified. Check float level; high float level = rich mixture, low float level = lean.
I would start simple: make sure you have no restriction in the fuel supply to your carburetor, and ensure your idle air screws are adjusted properly according to your manual. Your symptoms suggest abnormal idle circuit operation, and the air screws fine-tune the air fuel mixture at idle. If that does not help, get a rebuild kit for each carburetor on your bike. The kit will contain new gaskets, a fresh needle valve, a guide for setting float level, and new jets. Clean the insides completely, and reassemble with new parts.
Finally, you should get in the habit of shutting off the fuel when you park the bike. When the fuel tap is left "on", a leak in the needle valve or a failed float can overfill the float bowl, the excess fuel will drain into the intake manifold. This can result in hydrostatic lock or fuel dilution of your engine oil. ____________________ History shows again and again how nature points out the folly of men - BOC |
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claynz |
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claynz Derestricted Danger
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WD Forte |
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WD Forte World Chat Champion
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Old Thread Alert!
The last post was made 1 year, 361 days ago. Instead of replying here, would creating a new thread be more useful? |
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