Join Date: Mar 2002
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Re: Weber tunning
A little more info is helpful here. Different Webers are tuned different ways.
It is very common that a Weber is not tuned to your engine when you first put it on, especially if you have made any modifications to it at all..... That is why they include the directions on how to set the idle jetting. It is normal, don't be alarmed. Webers allow you to get dialed in just right for your engine where other carbs are not nearly as sensitive.
I would call up the Help Line # that is included in your instructions. Those guys are usually pretty knowledgable.
As for what size is in there... pull out one of them and see for yourself. There is a flat-head round screw on each side of the carb that holds the idle jet. Once you pull the jet out, you can read the # off of the side. Bigger # = bigger jet.
As for what comes in a jet kit, ask them what is in there..... A reasonable retailer will at least tell you what comes in the kit. They might not tell you the exact jet sizes, but they will tell you what jets it will come with.
As for setting the timing on the engine... you will notice there is a statement in the instructions about that too...... They state that you might have to redo the timing to make everything run right. You will have to try a little jetting, then change the timing a little and drive it around. Then check the jetting and then timing and then drive it some more. That is how Weber tuning goes.