engine overheating, no visible leaks but consuming 2l an hour. After 45min engine has to be switched off, cooled down and refilled with wate
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I figured that because I have two radiator caps one rated at 15psi and and one at 16psi I should be able to use a pump with high enough pressure to refill the radiator whislt the system is still under pressure.
I will attach the pump to the 16 psi cap that will should prevent backflow to the pump as the excess pressure should leave through the 15psi cap. I want to prevent backflow because I am trying to keep the pump clean for later use with drinking water.
I believe you are right Dan. The original owner used a chemical sealant to attemmpt to fix the problem. I didnt know this when i bought it but only realised after. I've tried two different chemical sealants since and they have made a modest improvement however still the issue remains. The thing to fix it correctly would be to replace the head gasket or the engine. However I need to drive it tommorrow for a camping trip so I'm going to rig up my pump and see how she goes.
So not a long term fix, but a quick hack. Understood. Best of luck with the trip, hope she behaves for you!
Had a similar situation on an older car of mine. I didn't want to spend the time/money on actually replacing the head gasket, so did some research and tried to find the best of the chemical fixes.
The one I got ended up actually working quite well, but eventually it failed again. Though I certainly can't complain, it got more life out of the engine than I would have otherwise.
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joelaud
ump
Non-ICE
lion mclionhead
I'm just going to guess that you've got a leaking head gasket. The coolant has to be going somewhere, and if you can't see a leak it's probably entering one or more cylinders through the blown head gasket and going out the exhaust pipe. Depends on the car and your DIY skills, but it could be a cheap-ish fix. I'd also be leery of topping up the cooling system with plain water - that'll dilute your coolant and reduce its antifreeze and boilover protection.