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#9 |
Registered Member
Join Date: Oct 1998
Location: Rogers, MN
Posts: 2,089
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![]() Applying vacuum to the regulator OPENS the restriction, it doesn't close it. When you add vacuum it will cause the pressure to drop.
You should use the fuel pump test lead to run the fuel pump when adjusting the pressure and then when you stop the pump, that's when you should do the leak down test.
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351W 89 Mustang GT Convertible |
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