i need answers quickly! PLEASE!?

Question

what are the basic steps in tuning a carbureter??????

Edlebrock carbureter

Answer 1

why is this a panic tune up? slow down and get it right. set the idle to about 800rpm. then set the idle mixture. the 2 screws at the bottom front of the carb are for the idle air/fuel mixture only. a good starting point is to turn them all the way in, then 4 turns out. turn both screws in 1/2 turn each until the engine stumbles, then back them out just enough to smooth the idle out. to richen or lean the main a/f mix, you need a jet and metering rod kit and change the jets and rods until you get the proper 14.7-1 mixture. good luck with that. start rich(bigger) and work lean by reading the plugs. black is too rich, white is too lean. you want a clean plug, slightly off-white ceramic. there are all sorts of fine tuning procedures, but im done here. by the way, the 2 screws at the bottom adjust both air and fuel, not 1 air and 1 fuel, like the other dude thinks. and dont tune the carb until everything else is tuned; timing, dwell, plug gap, noobulator angle, and snap lug torque.

Answer 2

What kind of carburetor? Holley, Edlebrock, or Carter to name a few. The two screws in the front adjust the idle mixture, the screw on the throttle lever adjust the idle. To adjust the mixture off idle (normal driving/wide open) you need to purchase the tuning kit from Edlebrock. Adjusting the floats can be complicated and unfortunately my manual is in the shop.

Answer 3

Easy,

Depending on the Carb. You have 2 main screws. 1 Fuel and 1 air. I start all over and turn both all the way in and backem back out 3 1/2 turns. You have to listen to the motor and look at the exhaust. The air backing out increases air flow to the carb. The fuel the same except for fuel. You need to adjust them to get the engine idle like a kitten. Then adjust the air under half throttle, for a smooth running engine. Too much fuel, you will get black smoke, screw it back in a little. Anyway without being there it is hard to tell. You just just have to play with it to get it right.

Answer 4

A very broad question.

I would start by setting the cold choke adjustment, the float level, and run the jets in till they bottom out (gently, when the screw stops turning, that's as far as you need to go, don't crank them down!) back them out about 3/4 turns. Back the idle adjustment out until it doesn't touch, then turn it in until it just moves the throttle linkage.

This is where I would start if you can't get the motor to start, or you have the carb on the bench.

Answer 5

i own a shop,and the way i do it is get it started,let it warm up,and adjust it to the highest manifold vacuum you can get it at ,but keep it running smoothly as your doing this,the amount of vacuum isn't as important as the steadiness of it,this is what helps balance the engine out ,and gives all the cylinders an equal amount of fuel,and then let it cool off and restart it and set the fast idle for the choke and cold warm up ,and it will be done,this will also change the timing on it as yo do this,you,ll need to check and re-adjust this also,keep it at where it is supposed to be at,good luck i hope this helps.

Answer 6

what is the question