Changed the Radiator but I cannot get air out of the system.
Discussion
Hi
Hope you can help. I have changed the Radiator on the car and have followed the bible regarding refilling the cooling system. However after filling it I no longer have any warm air coming out of the heaters.
I have no air coming out of the bleed screw on the top of the Rad. The Swirl pot is full and no air is burping out of the expansion tank when I run the engine.
The temp gauge shows normal and the fans are all kicking in ok.
I know that the heater matrix must have air in it but I cannot seem to get the air to move. Any suggestions?
Thanks
Hope you can help. I have changed the Radiator on the car and have followed the bible regarding refilling the cooling system. However after filling it I no longer have any warm air coming out of the heaters.
I have no air coming out of the bleed screw on the top of the Rad. The Swirl pot is full and no air is burping out of the expansion tank when I run the engine.
The temp gauge shows normal and the fans are all kicking in ok.
I know that the heater matrix must have air in it but I cannot seem to get the air to move. Any suggestions?
Thanks
As previous posters nose up & using the throttle heater pipes on the inlet manifold are about the best ways to bleed.
Maybe you will have to clean the heater valve out and flush the heater matrix. Bleeding will be extremely slow if they are clogged up.
I must admit to always being a little alarmed by the way LR went back to that ugly but high bleed/fill point by the rocker cover with the serp heater + bypass arrangements.
Maybe you will have to clean the heater valve out and flush the heater matrix. Bleeding will be extremely slow if they are clogged up.
I must admit to always being a little alarmed by the way LR went back to that ugly but high bleed/fill point by the rocker cover with the serp heater + bypass arrangements.
This works for me:
1. Start with a cold engine.
2. Set the heater control to its hottest position.
3. Remove the swirl pot top and screw in a large plastic funnel.
4. Remove the expansion tank cap and half fill the pot.
5. Fill the system with a solution of anti-freeze (between 25% and 50% anti-freeze to water).
6. Keep the funnel about half-full as you bleed the radiator via the bleedscrew on the radiator's end tank near the expansion tank.
7. Tighten the bleed screw and start the engine.
8. As it heats up there will be lots of air escaping through the funnel. Keep the funnel half-full.
9. Once normal running temperature's reached there will be less and less air escaping. Eventually the water level in the funnel will start to rise. Switch off at this point.
10. Remove the funnel and replace the swirl pot top, remembering that the coolant will be very hot at this point, almost boiling.
11. As it cools, don't let the expansion tank level fall below about half-full. Once the level stops dropping replace the cap.
1. Start with a cold engine.
2. Set the heater control to its hottest position.
3. Remove the swirl pot top and screw in a large plastic funnel.
4. Remove the expansion tank cap and half fill the pot.
5. Fill the system with a solution of anti-freeze (between 25% and 50% anti-freeze to water).
6. Keep the funnel about half-full as you bleed the radiator via the bleedscrew on the radiator's end tank near the expansion tank.
7. Tighten the bleed screw and start the engine.
8. As it heats up there will be lots of air escaping through the funnel. Keep the funnel half-full.
9. Once normal running temperature's reached there will be less and less air escaping. Eventually the water level in the funnel will start to rise. Switch off at this point.
10. Remove the funnel and replace the swirl pot top, remembering that the coolant will be very hot at this point, almost boiling.
11. As it cools, don't let the expansion tank level fall below about half-full. Once the level stops dropping replace the cap.
Woo hoo!! All sorted.
Went to start following the above instructions and when I took off the expansion tank cap saw that there was no water in it (I had left it 3/4 full). Checked to see if there was a leak and found none. Topped it up. Checked the swirl tank was full, checked that there was no air coming from the rad bleed screw.
Fired her up. Instant big burp from the expansion tank, got her up to temp and nice warm heaters. Looks like the air worked its way out while it's sat in the garage for the last few days.
Went to start following the above instructions and when I took off the expansion tank cap saw that there was no water in it (I had left it 3/4 full). Checked to see if there was a leak and found none. Topped it up. Checked the swirl tank was full, checked that there was no air coming from the rad bleed screw.
Fired her up. Instant big burp from the expansion tank, got her up to temp and nice warm heaters. Looks like the air worked its way out while it's sat in the garage for the last few days.
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