Coolant Leak under plenum

Nissan 300ZX technical discussion forum: Maintenance, performance, installations, modifications, how-to's and troubleshooting.
Rossco16
Posts: 8
Joined: Sun Dec 09, 2012 6:45 pm
Car: 1990 300zx 2+2 Fairlady Z

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Hey i just recently had a coolant leak coming from a bypass hose going underneath the right side(from inside the car) of the plenum from my 300zxTT JDM, I was wonder if it would be possible to replace this hose without having to do an entire plenum pull, its extremely tight to get at the hose and i can only remove one end easily, and the leak is because the hose is cracked in the middle not just near the end, so i would need to replace the entire hose. I'm just hoping to avoid haveing to remove the plenum and get a new gasket for it etc, because if i did that i might as well just replace all the coolant lines while im in there.


Rossco16
Posts: 8
Joined: Sun Dec 09, 2012 6:45 pm
Car: 1990 300zx 2+2 Fairlady Z

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Image the one show in the bottom right of this picture

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t.mcginley.jr
Posts: 1547
Joined: Fri Jun 01, 2012 5:50 am
Car: 2002 Nissan Altima SE 3.5
1990 Nissan 300ZX NA 2+0
1966 Ford Mustang
Location: New Jersey, USA

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It will actually take more time trying to get the old hose off and put a new one on then pulling the plenum. If one hose is leaking it won't be long before other ones start to as they are 22 years old. 98% of the people who own a Z32 have done the coolant hose bypass where you actually get rid of all those hoses under the plenum. That way you don't have to worry about leaks like this, plus pulling the plenum gets 70% easier.


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