Loss of power

The Nissan 300ZX (Z32) general community discussion forum
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snowhat80
Posts: 2
Joined: Mon Feb 12, 2007 10:47 pm
Car: 1994 Nissan 300zx TT

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1994 300zx TT JWStillen Intake/ExhaustInjectorsst 3 clutch

1st of all, sometimes i get hardly any boost, and when that happens i noticed when i stop and turn off my car the start it back up I get boost, approx 17psi(cause stock gauge only goes to +-14psi). So when it gets boost, the boost gauge stays at +14psi when i floor it but it feels like it looses pressure at about 5500rpm. It never did that before, i had pressure til redline. any ideas?

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nsrZ32
Posts: 20795
Joined: Fri Oct 15, 2004 8:27 am
Car: 90 Nissan 300ZX TT
78 Datsun 280Z
71 Datsun 521 Pickup
98 Nissan Sentra 2.0 SE
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Possible vacuum leak cause it sounds like your boost is bleeding off.

As for the no boost sometimes then you have it when you restart, possible drivability issue where the car goes into "safety boost" or limp mode.
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snowhat80
Posts: 2
Joined: Mon Feb 12, 2007 10:47 pm
Car: 1994 Nissan 300zx TT

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How would i go about getting my vacuum lines tested?
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