Ive got a 75 280z with Triple webers on it and i cant for the life of me get it to run right. It idles great at 800-1000 but anything between 1000-2000 is death and after that it just wants to go go go with a little hesitation here and there. Ive seafoamed / carb cleaned the car best i can and replaced all fluid / sparks. If anyone in the area has experience with these carbs and can tell me if i need an allout rebuild or such i would highly appreciate the help. Free meal and 12 pack of beer on me for any and all help.

Thanks so much

Rob

First keeping it simple, have you made sure your timing/advance is set properly? Is the mechanical advance working? I am guessing the mechanical advance is doing something if it goes after 2K

What fuel pump and fuel pressure are you running?

Then, are the carbs balanced?

Do you know what jets are in the carbs?

Need to know the following info on the carbs: Size of or number on the following items - Air Corrector Jets, Main Jets, Idle Jets, Emulsion Tubes, Main Venturis, Auxiliary Venturis.

Should read something like this:

Emulsion Tubes - F16

Main Venturis - 30 mm

Air Correction Jets - 200

Main Jets - 115 or 120

Idle Jets - 45F9 or40F9

Auxiliary Venturis - 4.5 mm

We also need to know if you have done any modifications to the engine? Are you running a electrical fuel pump with the carbs? and is the pressure set below 3 pounds of pressure to carbs? Is the fuel line returned to tank or to the last carb only? Also about the above list of parts for carbs, make sure it is the same across all three carbs. When doing the first adjustments with a carb syn., make sure all linkage is left unhooked or real loose. Make the first adjustments and then attach the linkage. Other Info needed is like do you know the cam size and make? The engine likes to have the carbs run a little on the rich side. On the timing side, have you made any mods to the distributor? We are talking like single plate points adjustment (takes the vac. part of the distributer away from it) or pointless system? All of this can make it run different. But we can help, just give us more info. They run great when tuned right. Good Luck, Rich.

:stupid: If you can get it down to Fayetteville, we can adjust it for you.