Board logo

Twin webers fuel pressure
prawnabie - 16/2/09 at 11:21 PM

I have noticed that the top plate on my carbs (the large plate held on by 5 screws) leaks fuel when i have been on a run. There is a gasket there but it seems to be happening on both carbs which is weird.

I am running about 2.5 psi from a solid state pump through a filter king fuel regulator. (tested with a pressure gauge).

Is this too excessive - if so what is the best pressure to run on a 1700 cross flow with twin 40 webers.

Thanks

Shaun


flak monkey - 17/2/09 at 07:07 AM

About 2-3 psi is about right. Have you fitted new gaskets? If not I would suggest you do, they tend to get left, go hard then dont seal properly.

David

PS usually if your fuel pressure is too high the carbs dribble fuel out of the small circular hole on the front, next to the trumpets.


prawnabie - 17/2/09 at 01:41 PM

Ok will try that!

Just wierd how both carbs are leaking from the same areas!!