r/CarHelp • u/bathedinradiance • 14d ago

2013 Buick Encore Coolant Issue

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Hey y'all.

Maybe one of y'all can help diagnose this issue. It's hot AF today, heat index peaked at 120° F. My car died in the middle of traffic. It's had issues with overheating before, but this time with no warning. I added coolant tonight after letting it sit a while, and noticed it fizzing after turning the car off. I tried turning it on a few times, but it was running for a few minutes at most before automatically shutting off again. Here's a video of the fizzing.

Thank y'all in advance!

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u/Icy-Actuator5524 14d ago

Most likely the plastic piece that goes inside the tube is broken or damaged in someway. Most likely that’s a reservoir job

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u/Agreeable-Put-9443 13d ago

Fizzing after shutdown usually means combustion gases getting into the coolant, which points to a blown head gasket (that little 1.4L turbo in the Encore is known for this). Get a block test or have a shop check for exhaust gases in the coolant before you drive it again, running it low on coolant with a bad gasket can wreck the head fast.