adammtb
Dec 25 2005, 09:19 AM
So we're running Weber 34 ICTs. We just got all the fuel lines hooked up and turned the fuel pump on. Fuel drips out of a little port near within a concentric ring inside just above the butterfly valve. Is this the idle fuel? When we goose the throttle some additional fuel is squirted in via another tube - I take it this is the accel fuel. We have a Facet fuel pump also.
JoeSharp
Dec 25 2005, 09:55 AM
How much fuel pressure do you have and is there any kind of seal there. Should not leak.
:PERMAGRIN: Joe
adammtb
Dec 26 2005, 04:02 AM
4-7 psi
I don't think there is supposed to be a seal. The fuel exits a little port which is positioned within the airstream.
McMark
Dec 26 2005, 05:23 AM
You should never see drips. Especially from anywhere besides the accelerator jet.
JoeSharp
Dec 26 2005, 07:29 AM
Can you get the fuel pressure down to 4?
:PERMAGRIN: Joe
Cap'n Krusty
Dec 26 2005, 09:25 AM
I'm a bit confused here. If it's doing that when it's running, you may have percolation because the mixture's too lean. If it does it all the time, you have a float or needle/seat problem. The Cap'n
lapuwali
Dec 26 2005, 10:46 AM
4-7 psi is way too high for a Weber. Get a regulator and trim it down to 3 psi. Weber needle valves don't like much fuel pressure.
maf914
Dec 27 2005, 10:01 AM
One of my Webber 40 IDF carbs once developed a fuel dribble which resulted in rough running. I found that the float level was not in correct adjustment. Resetting the float level solved the problem. Just an idea.
Don't know if this applies to an ICT carb, though.
1bad914
Dec 27 2005, 10:07 AM
Adjust your floats and get the fuel pressure down to 4 psi. The floats are rarely adjusted correctly, even from the factory.
olav
Dec 27 2005, 10:22 AM
I had a stuck/sticking needle valve. Replaced it and all was well.
goberserk
Dec 29 2005, 10:28 AM
Thanks guys. It happens when I turn the key to the "on" position. The car doesn't have to be running. And it only happens some times, not all the time. I'll try tracking down a regulator, any brand suggestions? A quick look at summitracing.com resulted in a bunch in the 3-4 psi range.
rhodyguy
Dec 29 2005, 10:42 AM
or check out the quiet rotary pumps, with the proper fp, from cbperformance. pump, regulator, gauge...too much.
JoeSharp
Dec 29 2005, 11:24 AM
Kevin is right. I used the facett and with the regulator it cost more than the CB. and it supplies the correct pressure.
:PERMAGRIN: Joe
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