It is the third screw that holds the throttle body in place. It has a hole in it, regardless of market. Only the USA ones do it externally, so there is no hole in the insulator/riser for the vacuum. Lol, I wonder how many of them got installed like this, everyone is running w/out their power...
I have a couple of USA intake spacers/insulators, and I don't think that I'm getting vacuum to my non-USA Aisan's power valve. Your thread just made me realize it. I wonder who else wasn't informed that the vac is different on the non-US Aisan 2F carbs, ughhhh. I must have been out of my mind...
My original carb was an Aisan that was cast iron. After rebuild it ran with lean symptoms. Replaced with new Aisan. This time, they built it with an alloy base. I'm concerned that my original carb was too internally rusted to ever run correct, as it sat without gas for how many years. I...
How do your spark plugs look? Proper ignition and no vac leaks, and it will not require pumping the gas pedal.
I probably get more "vapor lock" than others because the atmospheric pressure is much lower here. Everything boils at lower temps.
I only get FSM numbers when I set the idle rpm in...
Yes, pull the choke, turn the key, regardless of how cold it is. This is my experience on every carb I've run. It should keep the plugs from fouling if you minimize the gas at startup, and avoid diluting the oil with gas. Under the carb is a depression where gas can puddle in the intake...
Pumping the accelerator isn't really how these things start. The carb basically produces three kinds of fuel: straight-up air, the tiny gas droplets mixed with air from the regular fuel circuits, and, a stream of fuel from the pump plunger. The vacuum at cranking isn't sufficient to do much...