engine stutters at first!

I just finished my 2007cc engine and I am trying to get the carb tunned, weber 44IDA's. It is running good except for that when I first step on the gas it stutters and dosen't want to go, but if you give it more gas it takes off. Does anyone know what this might be or how to figure it out. Thanks

You got yourself a "flat spot"

Gclarke

Is it when the engine is first warming up or do you mean that it does it whenever you first hit the gas pedal?

Sounds like it may be rich (44's on a 2007 are a lot of carb) and bogging coming off-idle.

What are you running for jetting?

What is the distributor advance set at? Centrifugal advance or vacuum?

Same question as above, is this just when cold or after it's been running for 30 minutes or so?

John, you mean IDFs, right? Give us a lowdown on your jets.
Ron

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Check your float levels, then the idle jets for cleanliness. If you have 36mm venturis and F11 emulsion tubes 52.5 or 55 idle jets, 140 mains, 190 air corrections, and 50 pump squirters should be about right at sea level.

If your carbs have F2 emulsion tubes try 145 mains and 175 air corrections with the rest of the above jetting.

are you running dual carbs? it sounds like the same problem i get when the linkage is off, and one carb is opening before the other.

Yes I ment IDF's and this does happen when it is hot. I have to check on the jetting and get back to everyone, and thanks for all the timely responses.

That's a good call, Rob. I've had that happen to me and it does create a stutter off idle.
Ron

Again, what are you running for distributor advance?