You either have the mother of all airlocks or a cracked head. If you fit a static test rig it should show 5 to 7 Psi at normal temp. Heater should be the first thing to get warm. Have you checked the stat? Try back flushing heater.
You either have the mother of all airlocks or a cracked head. If you fit a static test rig it should show 5 to 7 Psi at normal temp. Heater should be the first thing to get warm. Have you checked the stat? Try back flushing heater.
Why not? You haven't bust the new fan fitting it?
Is this the petrol? The petrol can be an absolute sod to get all the air out.
Check thread title my good man.....
Oh yeah, valid point!
Datatek
Well-Known Member
If it's blowing out coolant and the fan is OK, sounds like a cracked head unless the expansion tank cap is faulty and not holding pressure.
tomcat59alan
Well-Known Member
Did you check the thermostat opened before fitting it, also check post #31
tomcat59alan
Well-Known Member
Make sure you test it before fitting ,in a pan of hot water and that it has an air bleed hole that must be fitted at the 12 o clock position ,see Rave.
Not me the fan either works or it doesn't. Should run relatively freely until the air in the shroud overheats the viscous unit and opens the viscous fluid valve. Centrifugal force then sends fluid to outer part of viscous unit causing it to be driven. It should never spin at more than 80% of engine speed. Under normal driving conditions the fan is not engaged and the engine is cooled by ram air. Only when car slows or stops in traffic should the fan be engaged to get rid of latent heat from the engine. Think this bloke has a big airlock. Heater should be the first thing to get warm, as coolant is circulated out of the block through the back of the head and through the heater, back along the heater outlet pipe on the O/S of the head and back to the pump. Only when the stat opens is coolant run through the rad. If anyone has trouble after draining rad and block to change coolant. My advice would be to remove top inlet hose from rad (the R/H one looking from the front). Use a length of hose to fill the rad and fill the block through the disconnected top hose. At some point you will see coolant rising in header tank.You will have no end of trouble trying to fill and bleed the block if the stat does not have a bleed hole in it. Also make sure the bleed tube to the tank is clear of all coolant.
Took the stat out and put it in some hot water and it opened up alright, the fan did not lock up on cold start so i am sure now that it is pooped. I had a carlton years ago where someone had removed the viscous fan and replaced it with an electric kenlowe one, is there one available for this engine because these viscous ones seem to be temperamental.
Datatek has a mod using the aircon fans.
Datatek
Well-Known Member
There are 2 good electric fans already there if the car has aircon, they cope happily cooling with the viscous removed
A very cheap and wise thing to do is to check if you have any combustion gases in the cooling system. Had the same symptoms in my car. I went thru all the different changing of rad, stat, fan etc. and even went to the stealer to have a coolant check with negative result. (the stealer did not understand how a CO2 test worked).
Then i bought one like this: https://www.ebay.com/itm/BT-3-BLOCK...979883&hash=item3f9eb34cb9:g:MuUAAOSwLEtYi8Gi
-and in no time I had the verdict: leaking of combustion gases into the coolant.
The head was ok, but the 1. year old HG had a tiny crack 10 mm from a water channel.
Just be sure to read the instruction for the set. Petrol makes the fluid turn yellow while diesel makes the fluid go green.
Also remember to block the leak pipe in the expansion tank neck to get the gases go into the fluid.
Just wish i had done this test months before....
Then i bought one like this: https://www.ebay.com/itm/BT-3-BLOCK...979883&hash=item3f9eb34cb9:g:MuUAAOSwLEtYi8Gi
-and in no time I had the verdict: leaking of combustion gases into the coolant.
The head was ok, but the 1. year old HG had a tiny crack 10 mm from a water channel.
Just be sure to read the instruction for the set. Petrol makes the fluid turn yellow while diesel makes the fluid go green.
Also remember to block the leak pipe in the expansion tank neck to get the gases go into the fluid.
Just wish i had done this test months before....
So far so good, filled the rad up and then the rest of the system through the passenger side hose going to the head and all seems to be ok. When the stat opened it spat a load of coolant out of rhe over flow pipe on the top of the header tank and the coolant rose up into the funnel, switched off, topped up, restarted and so far so good.
I haven't been able to get it hot enoughyet to get the fan working but it did lock up on start so i am hoping it is ok, many thanks.
I haven't been able to get it hot enoughyet to get the fan working but it did lock up on start so i am hoping it is ok, many thanks.
