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R33_Kris

Buzzing sound from rear on start up? R33 GTR V-Spec

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Hi All,

I’ve done a search and couldn’t find anything on this specific topic.

On startup I have this weird buzzing sound from the rear of the car which goes away in about 10 seconds.

It’s definitely not the fuel pump. Sounds like something 4WD or HICAS related pressurising? It can be heard intermittently for about 2 seconds every 30 seconds or so after the first “prime”. 

Is it a normal V-Spec thing, or am I losing pressure somewhere?

Hope someone can shine some light on this.

Thanks!

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21 minutes ago, WantGTR said:

Atessa priming. 

So this is normal?

It does it every 30-40 seconds for a second or two after the first prime.

This is my first GTR so I know nothing about what’s normal or not lol.

Edited by R33_Kris

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You should be happy that's all you hear.

Just imagine in 1995, all these whizzbang fancy electronic stuff clicking and buzzing away while your neighbours had to pull a lever to prime their carburettor.

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4 hours ago, niZmO_Man said:

You should be happy that's all you hear.

Just imagine in 1995, all these whizzbang fancy electronic stuff clicking and buzzing away while your neighbours had to pull a lever to prime their carburettor.

Very true!

14 minutes ago, WantGTR said:

welcome to nugget ownership!!!

Sounds like I may need deeper pockets lol

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Electric ariel engine?

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2 hours ago, R33_Kris said:

Very true!

Sounds like I may need deeper pockets lol

Let's just say it spirals out of control very quick. 

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5 minutes ago, Myskyliner33 said:

I had the same issue on my GTR. Change the Nitrogen canister on the atessa pump and bleed the system ( you can search for a how to )

Just jap sell the part.

https://justjap.com/manufacturers/332/genuine-nissan-attesa-nitrogen-accumulator-canister-nissan-skyline-r32-r33-r34-stagea-c34-4wd.html

Hmm ok, so there is a problem then? I’ve read that the nitrogen canister causes the relays to click, haven’t heard anything about the canister and my issue till now.

So you had the same issue and replacing this fixed it? As in doesn’t make intermittent buzzing noises now?

Just want to be sure before I spend ~$480 on this!

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The buzzing noise on my car was the atessa pump running. the relay will click on to turn on the pump.

If you start the car lay under the back of it and listen to the pump. if it turns on and runs every 30-40 sec then the canister needs changing. 

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Ok, I'll give that a go. Does it just screw off? Any special tools required to remove it or could you just use an oil filter wrench on it? There's nothing in the manual.

Edited by R33_Kris

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Its not easy but i used a pipe wrench to get it off. You will need to bleed oil out first and put a drip tray as oil will come out. 

Took me around 30min and i had never done it before. 

 

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