A guy in a Walmart lot swore this $300 Civic just needed a head gasket, and I almost believed him
He had a folder of receipts and a compression tester, so I handed over $300 in Spartanburg thinking worst case I part it out. Two weeks later it runs, but now I'm wondering if the knock I hear when it's cold is something I should've walked away from, anyone got a guess on what that sound could be?