Why is my coolant drain plug leaking

Asked by Eaglebaby Sep 18, 2020 at 08:52 PM about the 2001 Buick Regal

Question type: Maintenance & Repair

I recently drained and filled my coolant system through the
drain plug/petcock and after I put it back and tightened it it
started to leak through it

2 Answers
41,330

TDolby answered 4 years ago

You filled the radiator through the petcock? It is only set up for draining. You fill the system from the coolant reservoir. Check the gasket on the plug. If it is fine, maybe you need a new radiator?

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