TwinTurbo.NET: Nissan 300ZX forum - I was thinking apply vacuum with a manual pump
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Subject I was thinking apply vacuum with a manual pump
     
Posted by itsa300zx on January 10, 2019 at 10:51 PM
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In Reply To Re: I still thinks it’s the fuel regulator or damper... posted by ChezZ on January 10, 2019 at 10:32 PM
     
Message and a vac gauge to the reg and see if it holds steady vacuum.

Also, it may take a few minutes of engine running for the diaphram to leak fuel out the vac line side.

I don’t think pinching the vac lines will help.

Are these original regulator and damper, ie black in color?

     
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