coolant leak

beenagoodcar · Post by **beenagoodcar** » 28 Nov 2022, 13:51

Coolant leak on a Volvo V70 2.4 turbo. Every 20 to 2hours of driving I need a cup or two of coolant. After turning the car off and waiting 15 or so minuites the overflow tank still has pressure. There is no wet areas on the driver's side or passengers side floor. the oil level is good and no sign of anti-freeze mixed. How can I have a leak if it maintains pressure?

dikidera · Post by **dikidera** » 28 Nov 2022, 13:58

If it isn't a blown headgasket, maybe the heater core is leaking? That..is a pain in the ar*e to fix, because the whole dashboard needs to come out. Speaking from experience with other car brands, sometimes when attempting to remove the whole heater unit behind the dash, breaks it.

Post by **br0dy519** » 28 Nov 2022, 15:29

Heater core would mean wet driver's footwell, but the foam is so thick and porous it would take months to notice. Might be worth removing the carpet completely and inspecting.

My two coolant leaks were the radiator itself, and the thermostat on both my cars. You don't see any cruddy buildup near any fittings ?

Post by **kallekula** » 28 Nov 2022, 23:36

Feels like I’m repeating myself but buy a coolant pressurizer. They’re cheap, HF has a kit that works fine. Coolant leaks can be very hard to find without that type of tool. Could of course be a warped head also.

Post by **jonesg** » 29 Nov 2022, 02:16

beenagoodcar wrote: ↑28 Nov 2022, 13:51 Coolant leak on a Volvo V70 2.4 turbo. Every 20 to 2hours of driving I need a cup or two of coolant. After turning the car off and waiting 15 or so minuites the overflow tank still has pressure. There is no wet areas on the driver's side or passengers side floor. the oil level is good and no sign of anti-freeze mixed. How can I have a leak if it maintains pressure?

15 minutes isn't long enough, try it after it sits overnite and is stone cold.
If you still get pressure, its the head gasket.

93SCMax · Post by **93SCMax** » 29 Nov 2022, 05:48

Mileage on car?
When was the last time the water pump was changed?

I'd recommend you take off the timing belt plastic cover and look for coolant residue around the water pump and on the plastic cover.

Good luck.

beenagoodcar · Post by **beenagoodcar** » 29 Nov 2022, 09:44

93SCMax wrote: ↑29 Nov 2022, 05:48 Mileage on car?
When was the last time the water pump was changed?

I'd recommend you take off the timing belt plastic cover and look for coolant residue around the water pump and on the plastic cover.

Good luck.

ill check that tomorrow .Thank you

beenagoodcar · Post by **beenagoodcar** » 29 Nov 2022, 09:48

kallekula wrote: ↑28 Nov 2022, 23:36 Feels like I’m repeating myself but buy a coolant pressurizer. They’re cheap, HF has a kit that works fine. Coolant leaks can be very hard to find without that type of tool. Could of course be a warped head also.

Ill try removing the timeing belt cover then the coolant pressurizer. Thank yuou

beenagoodcar · Post by **beenagoodcar** » 29 Nov 2022, 09:50

br0dy519 wrote: ↑28 Nov 2022, 15:29 Heater core would mean wet driver's footwell, but the foam is so thick and porous it would take months to notice. Might be worth removing the carpet completely and inspecting.

My two coolant leaks were the radiator itself, and the thermostat on both my cars. You don't see any cruddy buildup near any fittings ?

Did the rad and pressure tank parts only cost $ 160 can

beenagoodcar · Post by **beenagoodcar** » 29 Nov 2022, 09:55

br0dy519 wrote: ↑28 Nov 2022, 15:29 Heater core would mean wet driver's footwell, but the foam is so thick and porous it would take months to notice. Might be worth removing the carpet completely and inspecting.

My two coolant leaks were the radiator itself, and the thermostat on both my cars. You don't see any cruddy buildup near any fittings ?

prwood wrote Should come to Canada to work on car. Its -15 F today, good chance of snow and ill be taking my timing belt cover off in the carport