[urq] Gurgling noise in cabin...

[Keith Lloyd]

Louis-Alain

I'm sure you have checked this, and it might not make much difference anyway 
but have you connected the the heater hoses to the correct inlet/outlet 
pipes of the heater core? Not sure it would make a huge difference but worth 
checking.
On mine the pipe from the back of the block goes to the lower of the heater 
core pipes.
Just a thought

All the best

Keith (in bright and sunny England with more snow than Whistler today!)

'87 WR
----- Original Message ----- 
From: "Louis-Alain Richard" <laraa at sympatico.ca>
To: <urq at audifans.com>; <quattro at audifans.com>
Sent: Saturday, February 20, 2010 12:14 AM
Subject: [urq] Gurgling noise in cabin...


> And it is not related to my stomach.
>
>
>
> Early January, I replaced the heater core in my urQ. I also took the
> opportunity to remove the useless evaporator coil, since AC is gone from 
> my
> car. Since then, when I start the engine, either cold or hot start, I can
> clearly hear water gurgling in the heater core. There is no leak in the
> area, or elsewhere in the engine compartment. Second observation, heat is
> not up to Canada standards, make that Arctic in January, so while I drive 
> up
> north to Mecaglisse track, I must wear my winter coat. But there, while
> lapping, plenty of heat to the tune of dialing back the temperature a bit.
> Also, when idling, if I rev the engine a bit, the noise disappear.
>
>
>
> The heater core I installed was a brand new aluminum-core/plastic-tank 
> unit
> from Behr (but made in China), identical to the one I removed. By the way,
> it was not leaking much, just a bit at the seams, enough to smell it, but
> not enough to really fog the windows. The old heater core was perfect,
> temperature wise.
>
>
>
> Could air be trapped inside for such a long period ? I doubt it.
>
>
>
> Is there a restrictor in there that could create cavitation ?
>
>
>
> Could it be water pump related ? The pump is a new German unit from summer
> 2008, when I rebuilt the engine.
>
>
>
> Any cue ?
>
>
>
> Louis-Alain
>
> Who is going to the track this weekend, with my new HERO Camera. Temps
> should be just below freezing, I won't die frozen on the way there.
>
>
>
>
>
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