Just bought the bike and it floods after cranking but carb does not run over. Can turn off the fuel valve and it will straighten up some but still floods until its out of fuel all together. I have replaced the vacuum diaphragm in the top, the accelerator pump diaphragm, I have cleaned and cleaned, adjusted the float, can there be a electrical issue? help.. Bike only has 3900 miles.
2000 Sportster 883
- Thread starter mudbugman
- Start date
The most common problem in a carb of this age would be the rubber tip on the float needle going hard and failing to seal however the fuel should then go down the overflow tube in the float bowl however if it was plugged then the fuel would flow up through the jets and downhill through the manifold into the cylinders
Jets being too large or the enricher not closing correctly could also cause excess fuel in the cylinders
A wee bit more info on jet sizes would be informative
Put a short length of clear plastic tube on the float bowl drain secure the plastic tube against the side of the carb open the float bowl drain screw and the fuel tap on the tank you will now have a visible display of the depth of fuel in the float bowl it should be about 2 or 3 mm down from the float bowl gasket any more than that then more float bowl investigation required
Brian
Jets being too large or the enricher not closing correctly could also cause excess fuel in the cylinders
A wee bit more info on jet sizes would be informative
Put a short length of clear plastic tube on the float bowl drain secure the plastic tube against the side of the carb open the float bowl drain screw and the fuel tap on the tank you will now have a visible display of the depth of fuel in the float bowl it should be about 2 or 3 mm down from the float bowl gasket any more than that then more float bowl investigation required
Brian