http://www.peachparts.com/shopforum/showthread.php?t=277670
There's a pic of the intake minus the butterfly valve in the above thread, a manual transmission, what is in your car?
No, there isn't a mixture there, sorry to mislead. To obtain an explosion you need air and fuel to mix in the presence of high enough temperature, compression provides the heat.
If you can get a FSM, the procedure to adjust the linkage should be in it.