No Coolant Flow?

[roccorich 16]

Should there be a flow of coolant into the expansion tank?

 

If so I cannot see any and my hoses must be routed wrong as i have the bottom hose going off behind the engine i assume ibto the block. The top two both go into the two connections on the throttle body?

 

 

Is that all right?

 

cheers

 

Rich

 

 

[Slo 283 1 Cars]

Bottom one goes to the back of the block behind the water pump, one from the top goes to the radiator on the left hand side underneath the slam panel as you look at it and the other goes to the throttle body, the other throttle body pipe goes to the brass pipe sticking out next to the thermostat.

[roccorich 16]

my bad i followed the pipes wrong.

yes onedoes go from the radiator to the header tank.

But its not hot....

 

The rads getting hot all across.

 

But like i say i cant see any coolant moving in the header tank at all even through the level hole...

[Slo 283 1 Cars]

Ok take off the long thin one and blow through it then check that the pipes it goes onto on the rad and bottle to see that they are clear.

[roccorich 16]

Its clear.

 

If i hold it low enough then coolant trickles out.

[roccorich 16]

I changed the coolant last week.

the only bleed screw i could find was down by the throttle body.

 

Its an f reg cti with a 1.9 conversion.

[Slo 283 1 Cars]

The top hoses on the bottle are only expansion/overflow pipes as long as they are clear i wouldnt worry about nothing flowing through them constantly.

[welshpug 1,661]

there's a bleed screw (or should be) on the upper heater hose, one on the top of the thermostat housing, though usually broken off.

 

I don't know of any on the throttle body!

[roccorich 16]

Thats a relief then. Used to my Scirocco where it has a constant flow.

 

bleeder is not on the throttle body itself but a pipe somewhere below it.

 

definately not one on either matrix hose.

 

and cant see anything on the thermostat housing. where exactly is it and is it metal or plastic? a nut or a little wheel?

 

I dont think I have an airlock as the rad gets hot all over, matrix is hot and it doesnt overheat.

 

Runs about 85 unless not moving and then moves towards 90 when the fan kicks in and never seems to go off.

any idea what fan switch temps i should be looking at if i buy a new switch?

[Slo 283 1 Cars]

A bleed screw below the throttle body is about as much use as an ashtray on a motorbike, very odd that. The bleed screw on the thermostat, i think, is sticking out of the brass t piece next to the thermostat. Mei is that it?

[welshpug 1,661]

its a steel t-piece, as it rusts!

 

but indeed it sticks out above the thermostat takeoff and bleeds the engine side of the thermostat, I think some had a plastic screw in there where many had a brass drilled allen bolt.

 

some of the later plastic top hose takeoffs had a schrader valve cap on them, which sorts out the air that can get stuck in the top hose.

 

I drill a 3mm hole in the top edge of the thermostat just in from the seal to aid bleeding, lets the air through but very minimal flow, so will have a negligible effect on how early the thermostat opens, quite a few thermostats will have a small ball valve to do the same thing.

[Slo 283 1 Cars]

Ahh right i assumed it was all brass but yeah now i think about it they do rot pretty badly on the outside. Not wanting to snap one off or unscrew it to be sure i just thought since it had a brass screw it was all brass. The one on my turbo is a tad corroded too