11 replies to this topic

[JonnyAlpha]

Hi,
I have just noticed that fuel is pouring out of the overflow pipe in the carb. When I rev it up it stops and then starts again when back at idle.
The car has only been running on and off the last two weeks as it has been restored over the last 5 years.

Is this a float problem? And if so how do I diagnose / fix it.

Thanks

[nicklouse]

float or needle issue. strip clean and measure.

[JonnyAlpha]

Measure what?

[AlexMozza]

Anything.
Inside leg? Bmi?

[nicklouse]

Measure what?

your float. as described in your Haynes manual.

[carbon]

Dirt in the petrol can also cause carb flooding at idle. If you've not already got a fuel filter fitted I would put one just before the carb.

 

However be careful about which type you fit, I have recently heard reports of the cheaper plastic fuel filters splitting. This was on motorcycles and in at least one case it resulted in a fire and significant damage.

[Spider]

What type of Fuel Pump are you running and have you checked the Fuel Pressure?

[JonnyAlpha]

Thanks for the tips - took the lid off the bowl and had a look at the float, wiggled it a little and put it all back together. Stopped leaking!!

 

Sorted 

[carbon]

Would keep an eye on it. If there is dirt (rust) coming through from the fuel tank it is likely to happen again.

 

I fitted one of the clear plastic bodied filters, and the amount of brown stuff it catches is quite incredible.

[JonnyAlpha]

Would keep an eye on it. If there is dirt (rust) coming through from the fuel tank it is likely to happen again.

 

I fitted one of the clear plastic bodied filters, and the amount of brown stuff it catches is quite incredible.

 

Yeh I think I'll stick a filter somewhere along the line. Maybe in the Engine Bay?

[carbon]

The fuel filter really needs to be after the petrol pump, if you've got a mechanical pump that means it will be in the engine bay but try to position it well away from exhaust or other hot components.

 

And be wary of very cheap clear plastic filters, as they can split.

[JonnyAlpha]

Looking at this one.

There is not a lot of room after the fuel pump.