Another question about the cooling system
Another question about the cooling system
I filled my coolant reservoir between the minimum and maximum line (coolant was a little closer to the minimum line); however, it was well over the max line after i drove somewhere about 45 minutes away (i’d say about 1.5-2 inches over max). The car does not overheat, but does that mean there is still air in the system?
No, coolant expands as it gets hot, the reservoir exists so the extra volume has somewhere to be stored. As it cools there will be a vacuum siphon effect that draws coolant back into the radiator.
Sorry, let me illustrate a better picture of how much the coolant has risen to explain this better; if i were to fill the coolant up to the max, the reservoir would basically be full of coolant after driving 45 minutes away to that destination. I do not think coolant should rise that much, but i also do not know what the issue could be
I was just trying to give him a better picture of how much the coolant has risen. I filled it up slightly above minimum. After i was done driving it was about 2 inches above max. That is probably a 5 inch rise in the reservoir, and I think that is way too high
Here's the thing though, if the car is NOT overheating and you DO have hot air blowing from the air conditioner then it's working as intended. Yes it seems a little high but there's a lot of variables that go into fluid expansion, glycol expands less than water, perhaps your 50:50 ratio is off and you have too much water in the mix. A coolant tester, the kind where you suck up some coolant out of hte radiator and read the floating gauge, can verify your mix.
If you do have too much water and not enough glycol you can siphon or use a turkey baster to remove coolant from the radiator. Pull out a half gallon and replace with concentrated glycol instead of glycol mix. It's easier than removing stuff to get to the petcock valve on the radiator usually.
If you do have too much water and not enough glycol you can siphon or use a turkey baster to remove coolant from the radiator. Pull out a half gallon and replace with concentrated glycol instead of glycol mix. It's easier than removing stuff to get to the petcock valve on the radiator usually.
Here's the thing though, if the car is NOT overheating and you DO have hot air blowing from the air conditioner then it's working as intended. Yes it seems a little high but there's a lot of variables that go into fluid expansion, glycol expands less than water, perhaps your 50:50 ratio is off and you have too much water in the mix. A coolant tester, the kind where you suck up some coolant out of hte radiator and read the floating gauge, can verify your mix.
If you do have too much water and not enough glycol you can siphon or use a turkey baster to remove coolant from the radiator. Pull out a half gallon and replace with concentrated glycol instead of glycol mix. It's easier than removing stuff to get to the petcock valve on the radiator usually.
If you do have too much water and not enough glycol you can siphon or use a turkey baster to remove coolant from the radiator. Pull out a half gallon and replace with concentrated glycol instead of glycol mix. It's easier than removing stuff to get to the petcock valve on the radiator usually.
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With a cool engine, take off the cap and see how much fluid is in the radiator, it might just be full.
If it is still low in the radiator, take the single 10mm bolt off of the reservoir and lift it straight up, remove the coolant hose where it connects near the radiator cap. Pour the coolant out into a safe container as you do the net tests. Now tip it to the side and see if you can get coolant to pour from the hose, tip it the other way and see it pours from the overflow.
If it is still low in the radiator, take the single 10mm bolt off of the reservoir and lift it straight up, remove the coolant hose where it connects near the radiator cap. Pour the coolant out into a safe container as you do the net tests. Now tip it to the side and see if you can get coolant to pour from the hose, tip it the other way and see it pours from the overflow.
With a cool engine, take off the cap and see how much fluid is in the radiator, it might just be full.
If it is still low in the radiator, take the single 10mm bolt off of the reservoir and lift it straight up, remove the coolant hose where it connects near the radiator cap. Pour the coolant out into a safe container as you do the net tests. Now tip it to the side and see if you can get coolant to pour from the hose, tip it the other way and see it pours from the overflow.
If it is still low in the radiator, take the single 10mm bolt off of the reservoir and lift it straight up, remove the coolant hose where it connects near the radiator cap. Pour the coolant out into a safe container as you do the net tests. Now tip it to the side and see if you can get coolant to pour from the hose, tip it the other way and see it pours from the overflow.
I would rent a pressure test kit for the coolant system, I think you have a leak, also pressure test the cap to verify it's actually working. It might be escaping as steam so it won't necessarily be dripping.
If the system is not completely sealed then it won't create the vacuum effect needed to draw coolant back from the reservoir.
If the system is not completely sealed then it won't create the vacuum effect needed to draw coolant back from the reservoir.
I would rent a pressure test kit for the coolant system, I think you have a leak, also pressure test the cap to verify it's actually working. It might be escaping as steam so it won't necessarily be dripping.
If the system is not completely sealed then it won't create the vacuum effect needed to draw coolant back from the reservoir.
If the system is not completely sealed then it won't create the vacuum effect needed to draw coolant back from the reservoir.
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Apr 5, 2015 04:19 PM





