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2003-2009 Nissan 350Z

Leakdown test results

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Old Aug 28, 2020 | 08:37 PM
  #1  
shadowrazey's Avatar
shadowrazey
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From: NSW
Default Leakdown test results

Hey guys how yall doing! Long story short my 03 Z with roughly 125000kms is starting to burn some oil recently. Did a leakdown test last week and the result was not so good.
Compression&Leakdown
Cyl1: 158psi 12%
Cyl2: 160psi 22%
Cyl3: 160psi 12%
​​​​​​​Cyl4: 170psi 10%
​​​​​​​Cyl5: 165psi 11%
Cyl6: 160psi 10%
So what you guys think is it piston&rings? Should I be considering an engine swap or just drive till this engine dies? Cheers
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Old Aug 30, 2020 | 12:37 PM
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From: North of Pitt. PA
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No point of an engine swap unless it has a lot less mileage. Even then, can you confirm the mileage?

I would do the rings and seals before it gets to bad.
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Old Aug 31, 2020 | 06:50 AM
  #3  
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THIRZTY
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From: Another Tuezday n Commiefornia
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Originally Posted by shadowrazey
Hey guys how yall doing! Long story short my 03 Z with roughly 125000kms is starting to burn some oil recently. Did a leakdown test last week and the result was not so good.
Compression&Leakdown
Cyl1: 158psi 12%
Cyl2: 160psi 22%
Cyl3: 160psi 12%
Cyl4: 170psi 10%
​​​​​​​Cyl5: 165psi 11%
Cyl6: 160psi 10%
So what you guys think is it piston&rings? Should I be considering an engine swap or just drive till this engine dies? Cheers
Dude... the leak down test will tell you where the compression is being lost. You are supposed to listen to where the air escapes from.
Out the intake... intake valves.
Out the exhaust... exhaust valves.
​​​​​​​Out the crankcase... pistons/rings.
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