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1972 240z 3 screw carbs

robert clark

Entry posted by robert clark

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the carbs on my 240 are new , one is drafting more than the other.cant find a air flow meter

to check them. outer carb doing all drafting . can hold hand over it running and car will die hold hand over inner carb willl not die.

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2 Comments

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beandip

Instead of blocking the carb. lift the piston. The SU is vacuum dependant. Did you try your local parts store in the performance section for a uni-sen? Edelbrock has them under there name. There are others on the market as well. Go to a VW shop or a Harley bike shop. Anywhere that has a need to balance multi carbs. will have one.

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fcdrifter13

You can also due a rough tune with a large straw about the length of those old straws you get from fountain drinks at a gas station. You can put it to your ear to each and make adjustments to the sound differences. Higher pitched is (i think) closed more and lower is open more.

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