Sonic coolant consumption

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#16
Looking for coolant leaks when the engine is hot is of limited use; the hot coolant "flashes" to vapor as soon as it leaks out and pressure on it is reduced. You have little chance to see leaks. Find a way to pressurize the system cold.
I didn’t realize it vaporized that quick, but that makes sense. I don’t have a way of pressurizing it here, so it looks like I’ll have to get it pressure checked or even fixed by a reputable shop. It has to get done somehow, it’s not going to get better. I was contemplating selling the car, but I’m not going to knowingly sell someone problems. I’d hate to think I sold it to someone for their son or daughter and it broke down somewhere in the middle of nowhere. Don’t even want to think about that. I don’t have any diagnostic tools so that leaves me stuck. I bought it from
a dealership and the 5 year 100,000 mi
warranty expired on 7/31. Do you think that’s worth a try or just take it to an ASE certified independent shop and have them check it out? Thanks for your help here.
 

billr

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#17
Umm... 7/31 of 2018? that's still a week away. Maybe the warranty covers it. If not, borrow a pressure-tester from your FLAPS, it is an easy tool to use. You may find something obvious and easy to fix.
 
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#18
Umm... 7/31 of 2018? that's still a week away. Maybe the warranty covers it. If not, borrow a pressure-tester from your FLAPS, it is an easy tool to use. You may find something obvious and easy to fix.
Yes, 7/31/18. I didn’t type that right, it might have sounded confusing. I’ll try the pressure tester first. I think I can get one. Does the tool put positive pressure on the system or a vacuum? So either way it will leak down if I have a leak in the system right? If the system gets flushed out good, can I put the green antifreeze back in once this problem is resolved?
 

billr

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#19
It will apply pressure (about 15 psi) and you will be able to see fluid leaking out, as well as a pressure drop. The system must have liquid in it to see a leak, of course. If the old coolant doesn't look bad you can re-use it, but I wouldn't unless it is almost brand new already
 
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#20
It will apply pressure (about 15 psi) and you will be able to see fluid leaking out, as well as a pressure drop. The system must have liquid in it to see a leak, of course. If the old coolant doesn't look bad you can re-use it, but I wouldn't unless it is almost brand new already
Got it. Seems easy enough. Coolant like 1 y
old. Will change it,
Thanks billr
 
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#21
Poor man's radiator pressure test... Fill up completely with cold engine (do NOT spill any fluid on radiator!)...Cap on...Squeeze upper hose to feel how hard/soft it is...start engine...as soon as hose firms up, shut off engine and look for leak. If thermostat has not opened yet, radiator will not be hot.
 
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#22
Sorry it took so long to get back with outcome, life happens. The car is fixed. It was the radiator. No more coolant smell. Thanks for everyone's help.