CARB FLOATBOWL FAULTS

CARB ; FLOATBOWL FAULTS

I have come across the following faults in the floatbowl ;

FAULT 1 ;

Dirt in the carb { usually fine rust particles from the petrol tank }

{ SOLUTION }

Remove the carb and check for sediment in the bottom of the floatbowl

Remember to have a fire extinguisher handy when working with petrol

I would be inclined to remove the carb and check for rusty deposits at the bottom of the floatbowl ,

Before you do this I would advise you to get a new carb floatbowl gasket because they sometimes tear when being removed .

Remove the air filter assembly

Remove the choke cable { Take care not to lose the wee choke cable clamp }

Remove the petrol hose and overflow hose { If fitted }

Remove the carb and work on it well away from the car

Do not be apprehensive about the carb clean

The only parts you need to touch are the floatbowl lid and the suction chamber .

When you do get the floatbowl lid and float off , just get a very thin screwdriver / needle and agitate the brown gunge in the bottom and empty out the bigger parts .

Fill the float bowl with fresh petrol about a third full , swirl around and empty out .

Repeat procedure until petrol runs clear .

Remove the suction chamber complete with piston and needle and you are left with this

Quarter fill the floatbowl with petrol then GENTLY blow through a small tube into the hole where the needle goes .

This will flush any sediment back into the float bowl where you can repeat

Quote:

Fill the float bowl with fresh petrol about a third full , swirl around and empty out . Repeat procedure until petrol runs clear .

Refit the floatbowl assembly .

Refit the suction chamber complete with piston and needle and top up with oil .

Remember to have a fire extinguisher handy when working with petrol

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FAULT 2 ;

STUCK SHUT NEEDLE VALVE

Note the needle valve stuck in the seat .

The needle valve should drop and rest on the float with the lid in that position .

This means that no petrol is getting into the floatbowl chamber .

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The following video shows how I tested it to show it was faulty .

The following video shows how it should work when tested .

{ SOLUTION }

Fit new Float

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Remember to have a fire extinguisher handy when working with petrol

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