Carburetor will not fill with fuel.

Asked by Aug 11, 2019 at 11:16 PM about the 1971 Volkswagen Super Beetle 1303

Question type: Maintenance & Repair

I have a 71 VW Super Beetle with stock engine. My problem is my carburetor
will not fill fuel bowl with gas. It is a new unit, I have replaced fuel pump and
fuel tank. I have checked fuel line from tank to pump with compressed air and
it is clear.  Oddly, this is the second new carb I have installed with the same
problem with both. I removed fuel line form carb and placed in a bottle to che
k fuel flow from pump and there is sufficient flow. I can pour gasoline into fuel
vent on carb to fill fuel bowl and car will run fine until fuel bowl is empty. It
seems that needle valve is not opening to allow fuel to flow into bowl, but it is
odd that two carbs would have the same problem. Any ideas? Thanks !

3 Answers

259,145

The needle may be stuck.

I replaced the needle valve on the first unit I put on also changed floats, same results. I passed it off as a defective carb (Chinese special) and bought another. This carb is doing the same thing. I haven't taken carb apart yet, but will probably have to check that valve in this carb.

259,145

Chinese carbs get mixed reviews at best. I personally have had good luck with small engine carbs from China. Maybe time to try a better grade carb? I suppose you could check the fuel pressure or replace the fuel pump in case the pressure is really low.

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