Carb 12a

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03-17-2003, 09:57 PM

mikebeezie3404

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im having a problem with the back barrels on the carb. ok the problem is in 1st and second gear the back barrels open the as soon as i hit 3rd,4th,5th they do not open. can any one help me.

thanx

03-17-2003, 10:33 PM

j9fd3s

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Join Date: May 2002

Location: California

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thats really wierd, its a very simple mechanism, you may want to get a new diaphram for it

mike

03-17-2003, 10:54 PM

mikebeezie3404

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when u say a new diaphram what do u mean? and one more thing its running very rich

03-17-2003, 11:06 PM

Hereonout

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Location: Lexington, SC

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it doesnt matter what gear you are in, the barrels open by what the gas pedal is doing....no matter what gear u are in. the back barrels should open when u press the gas, its connected with the front barrels. they all work as one, depending on how hard the gas is pressed.

03-18-2003, 01:11 AM

Racer X

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Location: Vanderhoof,BC(Canada)

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Yeah something on the carb is toasted.Like mike said it might be a diaphram.

03-18-2003, 01:16 AM

mikebeezie3404

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but what is the diaphram

03-18-2003, 01:30 AM

Racer X

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You need a manual.the haynes manual show the diaphram of it.

03-18-2003, 07:16 AM

prince

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Join Date: Sep 2002

Posts: 45

the secondaries are activated by huge vaccum from flooring the car, they are opened by a diaphram that is just below the passenger side of carb. most folks are just wiring up their linkages so they operate without the diaphram. do a search for mechanical secondaries here or in the www rx7 club dot com 1st generation.