300zx vacuum leak

Nissan 300ZX technical discussion forum: Maintenance, performance, installations, modifications, how-to's and troubleshooting.
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shea300zx
Posts: 7
Joined: Mon Jun 25, 2018 8:05 am
Car: 300zx Twin Turbo

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Hi there,i have a 300zx tt 1990,i did a vacuum test and found many leaks,but the is one leak left and it seems like it is coming from down near the plenum at the back of the engine,what would this be,the plenum gasket?thx
https://ibb.co/gEtg2o

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brian300zx
Posts: 115
Joined: Sat Dec 31, 2016 7:42 pm
Car: 1990 300zx TT
Location: SoCal

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spray some carb cleaner on it while the car is running and if the idle goes up it is the plenum gasket
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