jeremyt

How much fuel pressure should be goin to my carb? The previous owner has a fuel pressure regulator dial attached to the return line. This doesn't seem right to me. Also, I justy tuned her up and it feels like there is too much pressure coming from my 9.5 psi fuel pump. Should the dial be on the fuel imput line? Do I need the dial at all?

lovintha7

What kind of carb is it first off?

jeremyt

Mikuni.

Rx7carl

He might have been using the regulator on the return to limit the return flow. The stock restrictor would have been a better thing to use. You can deadhead the carb and use the regulator on the supply line, where it belongs.

jeremyt

What Do You Mean By "deadhead" The Carb? What Do You Think I Shoud Set To Regulator To Once I Change It To The Supply Line. The Dial Starts At 5.

Rx7carl

BLock the return on both the carb and put a cap over the hardline back to the tank. Search for proper fuel pressure on a Mikuni, its been discussed before.

turbo85

The mikuni carb is supposed to be set at 4.5 psi.