Dellorto problem. disaster averted, garage reeks of fuel Options

[rhodyguy]

all set, ready for fire up, energize the pump (didn't spin the engine) and the pump doesn't quiet down (cb carb pump) as the bowls fill as it did with the webers. i look over and there's a thin fountain the coming up and fuel welling thru the square in between the main stacks on the dr side carb. puddles on top of both of the throttle plates.

the pass side has the duel banjo fitting. fuel supply line connects to one fitting and the other fitting is supposed to supply the dr side eliminating the need for a 'T". does it make any dif which fitting gets the pump supply and which one connects to the dr side carb? top fitting as opposed to bottom. the dellorto book mentions the dual banjo but doesn't specify if it makes a dif where the lines are/how hooked up.

i had just changed out the oil so i know the 3 1/2 quarts of BP will get dumped. any ideas?

k

[nathansnathan]

I had this same thing happening after about a year running carbs that had been rebuilt by Gabriel off ebay on my drla 40s. It ended up being a "heavy float". You could see the outside of the float had been compromised and it was absorbing fuel.

I also noted some stiction in the springs in the plungers of the needle valves. Though Gabriel's worn out bits were worlds better than what you may find in a cb performance rebuild kit, you can get the real deal, a viton-tipped dellorto oem INC needle valve from Dellorto uk along with a new float or 2.

Don't listen to the people who want to talk about their 'Dellorto drip'. That is in every thread about Dellorto problems, someone saying, "yep, the Dellorto drip...".
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