Something is not right with my Weber DCOE please help

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advinnie
Posts: 952
Joined: Mon Jun 10, 2013 4:54 am

Something is not right with my Weber DCOE please help

Post by advinnie »

Hi all I have a Weber 40 dcoe carb on my turbo bug. Before Xmas it was working fine but now something has gone wrong. The problem is at idle there is a lot of fuel pouring out of the auxiliary venturi. As far as I’m a where fuel coming out of the auxiliary Venturi means the main jets are active?
If the main jets are active that means the progression holds have been uncovered ?
Is my thinking correct?
66brm
Posts: 405
Joined: Mon Apr 12, 2010 6:55 pm

Re: Something is not right with my Weber DCOE please help

Post by 66brm »

What's your fuel pressure like? And check your float/needle and seat, may have crud in there letting excess fuel through
advinnie
Posts: 952
Joined: Mon Jun 10, 2013 4:54 am

Re: Something is not right with my Weber DCOE please help

Post by advinnie »

That’s what I was thinking so changed the needle valve and washer for a new one, reset the the floats 8.5mm & 15mm drop and the fuel pressure is set at 3psi
madmike
Posts: 3146
Joined: Mon Jul 24, 2006 3:11 pm

Re: Something is not right with my Weber DCOE please help

Post by madmike »

does sound like a piece of crap in the Inlet valve :roll: ? or the pressure went up? I've dropped the pressure to 2lbs before :wink:
advinnie
Posts: 952
Joined: Mon Jun 10, 2013 4:54 am

Re: Something is not right with my Weber DCOE please help

Post by advinnie »

The new inlet valve has sorted it, well let’s just say it’s all up and going again
madmike
Posts: 3146
Joined: Mon Jul 24, 2006 3:11 pm

Re: Something is not right with my Weber DCOE please help

Post by madmike »

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