Petrol dripping out of bottom or Carb air filter .. ..

[DaveMorris]

fuel tank is full, rear of car is jacked up on top level of axle stands, and I'm checking de-dion tube etc at rear of car.

 

I then see fuel dripping, at quite a rate, from the rearmost of the twin 45's.

 

I assume that this is not normal.

 

Could the float valve be passing ?

What effect would this have on normal running / economy (I assume not good).

 

Dave

[Eugene]

Yup, not normal...

 

Something very amiss, and would indeed affect running - make it rich I expect...

But, easy to check!

[James_Russell]

I've had this once, I had no time to rectify it (I was just about to go to the grid!) but the problem resolved itself and never re-occurred. I think it must've been a sticking needle valve.

[DaveMorris]

A quick strip and check is on the cards I think - got a longish trip coming up soon.

 

Strange though as I just did an economy check on last tank of fuel, and seemed to be achieving somewhere in the 24-25mpg area (which I thought was pretty good).

 

Dave

[DaveMorris]

Well, today I took the car to work.

 

Refilled on way home and then checked both carbs with fuel pump running - no fuel passing anywhere.

Then put car back onto ramps, and both with and without fuel pump running - no drips what-so-ever.

 

Checked fuel consumtion over last 60 miles - again at/around 24-25 mpg.

 

If tickover on the forthcoming trip gets lumpy then I can take lid off the carb and check float needle valve is free. I'm gonna leave it alone for now, and treat the dripping last night as an anomoly.

 

Dave