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Bleed Attessa

Pezhead
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Pezhead Grand Master

Pezhead

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Posted (edited)

Hey fellas,

I just bled the Attessa in my R33 GTR. It's pretty odd, I have to have the car idle to have it run the pump. The pump would only come on every 2-3 minutes or so even with the bleed valve open the whole time. Also there isn't any "surge" when the pump comes on.

This is the odd bit when I open the bleed valve at the end of the transmission it just trickles out - very little, maybe 1-2 mm stream from the hose. It was constant and didn't show signs of air, but it was sure slow. It took like 4-5 minutes to put 20mm in a mayonnaise jar.

Then I did the rear one on top of the rear diff - and it only dripped out. I couldn't ever get a full stream. I let it run for like 10-15 minutes and only got about a 1/3 of my jar full.

Is my pump shot? Maybe that is why I have no front power transfer.

Edited by Pezhead
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Duncan Grand Master

Duncan

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Posted

definatelty not right mate. I don't know exactly how much it should pump in what time, but it is a lot more than 5min for 20mm.

you don't have a 4wd light on right? if not its probably the pump or the pump's wiring which is the problem.....could be expensive to fix

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Pezhead Grand Master

Pezhead

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Thanks Duncan, I kind of thought so. The 4wd light doesn't come on and the centre console gauge works and says power is being transferred but I think I finally found my problem.

I'll try to get it into a shop to have them check the Attessa pump and system, but I think it may be stuffed.

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some_cs_student Veteran

some_cs_student

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Posted
Thanks Duncan, I kind of thought so. The 4wd light doesn't come on and the centre console gauge works and says power is being transferred but I think I finally found my problem.

I'll try to get it into a shop to have them check the Attessa pump and system, but I think it may be stuffed.

Were you leaving the car running or turning it on and off?

I just put mine into ignition, let it pump it out for 5 or 10seconds and then shut if off again for a while. As recommended by a tutorial somewhere on here...

It did not take long before the entire container was pumped out....AWD system felt better after putting fresh fluid in :)

I think it was only 5 or 6 times for all the fluid to disappear.

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