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[E30Group] Coolant bleed and engine noise rosstwaits Wed Feb 15 18:01:04 2012

I'm pretty sure the thermostat is opening as the bleed screw is on the other 
side of the block and steam and hot water comes out. 

Car is at a barn so I usually only work on weekends. 

This is how I understand it; the valve defaults to an open position without 
power. But I checked for the click on our winter E30 and did hear it so I know 
what to listen for. 

Since there was sludge from the blown head, wondering if I could have a partial 
blockage still and it creates an air pocket ? Or jams the valve? Would this 
create the gurgling I hear from the pump to thermostat?

Finally.... In the video I posted, does anyone suspect rod knock? Or is it just 
more valve train?  

Thanks all. 
-----Original Message-----
From: Allister Brown <[EMAIL PROTECTED]>
Date: Mon, 13 Feb 2012 21:23:54 
Subject: Re: [E30Group] Re: Coolant mixture

thermostat not openin?, i think all the hoses should be hot once it  
opens, a new heater core does wonders! .You can hear the switch  
mentioned with your head down in the location, turning the heat blend  
knob on and off produces a small click. It is an on off switch valve...
just over half on the guage sounds a bit hot but thats perhaps  a non  
issue at this point. i guess at this point you could even have the  
hoses backwards?? my free 2 cents)

On 13-Feb-12, at 8:30 PM, Ed MacVaugh wrote:

> Have you checked the electric heater control valve to the left of the
> trans tunnel above the gas pedal on a left hand drive car?
> Ed>>> - I have no heat. I felt that if I bled the engine half way
> > decently, I shoul have some semblance of heat. nada. I blew air  
> into the
> > upper heater core pipe, and water spat out the bottom pipe, but  
> now my
> > concern is the core itself is plugged (where the fins are) and the
> > water/air is simply spitting back out from behind the plastic area  
> on
> > the end of the core. In other words, water and air are NOT traveling
> > through the heater core itself ?
> > I get a "bubbling" noise when I shut off the car well after reaching
> > operating temperature - the gauge is just above halfway. The hose  
> from
> > the pump to the thermostat actually vibrates a bit. I have used the
> > bleeder screw and jacked up the front of the car. the upper radiator
> > hose is hot and the lower one is not. The upper hose for the  
> heater is
> > that weird three-way one and it seems OK, but not very hot (should  
> it?)
> > and the lower one to the head is similar. I do not have the recall
> > notice by-pass thermostat on this car.
> > Ideas other than the system is still not properly bled?
> > Thanks all!
> > Ross