If you had water in the cooling system, of course, when it gets cold out, water freezes and it expands, and as it expands, of course it'll crack the metal of the engine block. if you had water in the cooling system, so this goes way back to when before antifreeze was invented, or used. They put them in the engine block, the purpose, one of the purposes, supposedly, is to prevent. it's probably a rusted out frost plug.īernie: What a frost plug is, it's also known as an expansion plug. it wasn't even an old radiator, had rust in the coolant. The owner of the vehicle had told me that they'd recently replaced the radiator, and so something that. soon as I removed the radiator cap, note right away there was a lot of rust on the radiator cap, and sitting in the top of the radiator. Mark: So after you dried your shoes off, what was causing such a large leak?īernie: What we found, what I suspected, and it actually involves removing the engine from the vehicle to verify it, was that there was probably a frost plug that had failed. So, yeah, there was a very major leak coming from this engine. Pour some coolant in, and it would be dripping out almost as fast as you could pour it in. Well, in between the engine and the transmission. This Dodge Caravan actually had a very large coolant leak coming from the back of the engine. What was going on with this vehicle, Bernie? Good morning.īernie: Hey, good morning. We're talking about a 2008 Dodge Grand Caravan this morning, that had a coolant leak. Bernie Pawlik, Pawlik Automotive in Vancouver, Vancouver's best auto service experience. Mark: Hi, it's Mark Bossert, producer of the Pawlik Automotive podcast and video series.
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