Who is correct regarding how to test for a leaking head gasket?

To determine if both technicians are correct in their methods for testing a leaking head gasket, it’s important to consider the commonly used diagnostic techniques for this issue.

A head gasket leak can lead to symptoms like overheating, loss of coolant, or oil contamination, so effective testing methods are essential. One common technique is to use a compression test, which examines the pressure in the cylinders to identify a potential leak between the cylinders or from the cylinder to the coolant jacket. Another reliable method is the use of a chemical leak tester, which can detect exhaust gases in the coolant, indicating a breach in the head gasket.

Additionally, technicians may use a visual inspection for signs of leaks or check for bubbles in the radiator, which may suggest a head gasket failure. By employing multiple methods, technicians can more accurately diagnose the problem.

Therefore, if both technicians are using proper techniques—such as a compression test, a chemical leak test, and visual inspections—then both can indeed be correct in their approaches to diagnosing a leaking head gasket. This comprehensive approach ensures an accurate diagnosis, which is why the choice that reflects both technicians being correct is appropriate.