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06 Coolant Sprayed on Air Filter

Old 06-10-2019, 04:07 PM
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JMSpeed
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Default 06 Coolant Sprayed on Air Filter

So I was driving home when all of a sudden I heard a pop, engine sputtered and bucked, heat gauge went to max and I shut it off. This all happened within 3-5 seconds.

I get home like 10 seconds later, which is the silver lining there. I popped the hood and the engine itself is clean, but coolant is all over the air filter area. Reservoir is way above max, but that side is clean too. Any ideas? Simply the radiator cap? Its original 13 lb. It was on super tight though.
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Old 06-10-2019, 05:42 PM
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Hopefully your engine misbehaved due to out-of-range temp and nothing more. You don't state mileage or previous problems so-

I'd take the radiator cap off, top-off with 50/50, leave the cap off and watch the temp gauge to approach normal. You should see the coolant level drop and refill as the thermostat cycles. Obviously, watch for leaks and shut it down before/if it overheats. If you don't see water entering the radiator you likely have a bad thermostat or water pump. gl!
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Old 06-11-2019, 07:06 AM
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The car has 130k miles and I replaced the thermostat once around the 100k mark. There's been a small leak on the left side of the engine bay, but I've filled the reservoir periodically until I could locate the leak. I didn't notice if it was empty, so I don't know if that contributed to the issue. For whatever reason, it's now way above max and I don't see any in the top of the radiator. My biggest concern is a blown head gasket that somehow pushed air into the cooling system and that's what caused the reservoir to fill up and the radiator cap to pop.
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Old 06-11-2019, 07:27 AM
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Heat gauge was probably already on max and you didn't notice. Fluid boiled out and popped radiator cap/hose/something

Last edited by iideadeyeii; 06-11-2019 at 07:28 AM.
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Old 06-11-2019, 08:11 AM
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Originally Posted by iideadeyeii View Post
Heat gauge was probably already on max and you didn't notice. Fluid boiled out and popped radiator cap/hose/something
And something as simple as that can cause the engine to sputter and buck when trying to accelerate?
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Old 06-11-2019, 01:02 PM
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Originally Posted by JMSpeed View Post
And something as simple as that can cause the engine to sputter and buck when trying to accelerate?
Yes, a coolant temperature sensor sending super high readings will shut it down.
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Old 06-12-2019, 02:30 PM
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Originally Posted by jhc View Post
Yes, a coolant temperature sensor sending super high readings will shut it down.
Appreciate you both for your help and feedback. I'll give your suggestions a try.
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