When does the coolant leak from the radiator?
The leak may be happening from the bottom hose or radiator drain. It may be happening only when the car is hot when you drive and the coolant is under pressure. Try checking it when it is hot, under pressure and while the engine is running. BustedKnuckles July 6, 2016, 2:02am #8 The coolant pressure test is obviously showing a coolant leak.
Can a radiator leak from the bottom hose?
shawn955 July 6, 2016, 2:02am #7 It is a slow leaks about an overflow in 2 weeks and no dye marks. The leak may be happening from the bottom hose or radiator drain. It may be happening only when the car is hot when you drive and the coolant is under pressure. Try checking it when it is hot, under pressure and while the engine is running.
What to do if your car is losing coolant but no leaks?
Another thought is to repeat the pressure test, pull the EFI or ECU fuse to de-power the fuel injectors, and coil, and, after 10-15 minutes into the pressure test when the pressure drops, turn the engine over a few times. Then pull plugs and check for traces of UV dye on the spark plugs.
What happens when a radiator reservoir is not under pressure?
A reservoir is under pressure in normal circumstances in order to increase the coolant’s boiling point. In case of a faulty radiator cap, the required pressure fails to build up inside the system, leading to overheating. When this happens, the coolant is likely to simply burn-off rather and disappear.
The leak may be happening from the bottom hose or radiator drain. It may be happening only when the car is hot when you drive and the coolant is under pressure. Try checking it when it is hot, under pressure and while the engine is running. BustedKnuckles July 6, 2016, 2:02am #8 The coolant pressure test is obviously showing a coolant leak.
Can a coolant pressure test show no leaks?
The coolant pressure test is obviously showing a coolant leak. The system should not lose pressure if there were no leaks. Since the leak is not external, it may be getting burned. Maybe the intake gaskets leaking again?
Another thought is to repeat the pressure test, pull the EFI or ECU fuse to de-power the fuel injectors, and coil, and, after 10-15 minutes into the pressure test when the pressure drops, turn the engine over a few times. Then pull plugs and check for traces of UV dye on the spark plugs.
shawn955 July 6, 2016, 2:02am #7 It is a slow leaks about an overflow in 2 weeks and no dye marks. The leak may be happening from the bottom hose or radiator drain. It may be happening only when the car is hot when you drive and the coolant is under pressure. Try checking it when it is hot, under pressure and while the engine is running.