1.9DG Weber question

[300CE]

Not sure where you are in Essex, but could always give these chaps a shout as well:

http://atspeedracing.co.uk" onclick="window.open(this.href);return false;

[ghost123uk]

This is sucking from what I think is the return to the tank.
That'll explain pushing fuel into the crankcase!

I have never used a Webber on a T25 but I cannot see how fuel can end up in the crankcase via the carb ? (usually a duff fuel pump causes this symptom)

[Ian Hulley]

I cannot see how fuel can end up in the crankcase via the carb ? (usually a duff fuel pump causes this symptom)

Back through the beret and the crankcase breather tower ?

[gjy55split]

New fuel pump already fitted.
I think it's sucking in that much fuel via the return pipe it's filling the cylinders and pushing it past the valves/rings. This is why it wasn't running on the cylinders full of fuel.
Pop rocker covers off after running it with the return pipe connected - and it runs only on 2 at best - and petrol pours out.
Disconnect return hose and it runs nigh on perfect.

[gjy55split]

Souther carbs confirmed it can't be a fuel return pipe.
Previous owner however had run it like this for the last 18mths though before it started playing up:?:
Any photos or links to diagram still greatfully received.
Thanks

[gjy55split]

Still looking for a diagram / any info. on jet sizes, if someone can point me in the right direction...
Thanks

[edoh]

you have pm