New Model, first adventure into petrol

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6 years 10 months ago #13091 by JRI
Replied by JRI on topic New Model, first adventure into petrol
You may already know this, but the Walbro has an integral pump with in/out valves (formed by gasket flaps) and it will ONLY pump gas when it receives pulses emanating from the crankcase through a tiny hole parallel to the inlet manifold. You cannot blow fuel into the carburetor like you can with a glow engine.
If the motor is dry then look for a blockage between the crankcase hole through the manifold to the carby..

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6 years 10 months ago #13094 by
Replied by on topic New Model, first adventure into petrol
Thanks for the info I have now got it sorted, needle valve stuck in think, got fuel through now.
The carb was as dry as a bone too

Ta

Simon

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