COOLANT LEAK HELP

3.0 V6 24v TFSI - 329 bhp
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S1000rrb8
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Joined: Wed Nov 01, 2017 8:33 pm

COOLANT LEAK HELP

Post by S1000rrb8 » Wed Nov 01, 2017 8:43 pm

Hi there...

I have a Audi s4 3.0tfsi b8 2010.

Not long ago bought the car and it is leaking coolant internally. Water is definitely in the crankcase (not moisture). We have replaced to oil cooler, pressure tested the supercharger and still same symptoms of losing a noticeable amount of coolant after 30min drive, nothing external. Also we replaced the thermostat. This is looking like hg or cracked head but no white smoke and never has misfire and runs like a dream always and never overheated.

Could the intake manifold on these engines somehow leak coolant in the crankcase?

As these engines are very complex, is there any other way water can enter the crankcase other then what we’ve tried & hg?

UKS4APR1
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Posts: 486
Joined: Thu Oct 21, 2004 10:58 pm

Re: COOLANT LEAK HELP

Post by UKS4APR1 » Fri Nov 03, 2017 4:43 pm

It will be your PCV Valve
It's under the supercharger, it's plastic!

UKS4APR1
3rd Gear
Posts: 486
Joined: Thu Oct 21, 2004 10:58 pm

Re: COOLANT LEAK HELP

Post by UKS4APR1 » Fri Nov 03, 2017 7:59 pm


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