Mazda B2600 Valve Cover Gasket
Troubleshooting Mazda Valve B2600 Valve Cover Gasket Leaks and Other Problems
The valve cover gasket sealing the overhead cams of your Mazda B2600 can last anywhere from 30,000 to 60,000 miles depending on the material the gasket is made of, its operating conditions, and various other factors. But when it does fail, the seal that's keeping the oil inside the engine and contaminants out will be compromised. Signs of Mazda B2600 valve cover gasket failure can come in a variety of ways, and n this guide we'll show how to troubleshoot the common valve cover gasket problems and how to address them.
One of the key signs of a cracked or otherwise damaged valve cover gasket is an oil leak. Leaks vary in severity, ranging from tiny droplets forming around the edges of the cover to puddles underneath the engine when turned off. If you suspect that the valve cover gasket is leaking oil, steam clean and degrease the engine and bring it up to its operating temperature. Doing so will send fresh oil to the gaskets and, since the engine is cleaned of old oil and grime, make it easier for you to pinpoint where the oil is coming out. If the source of the leak is on the edges of the valve cover or near the bolts that hold the cover in place, the valve cover is likely to have gone bad.
Compared to oil leaks, oil seeping out of the valve cover gaskets are less serious but still can prove to be quite a nuisance. Oil seepage is extremely common for vehicles over 30,000 miles, and is discernible for the dust and dirt that sticks to the oil. While seepage does not mean that the valve cover gasket is compromised and needs replacing, it does warrant occasional monitoring as it can turn into a leak over time.
If you notice gray smoke coming out of your B2600 engine, it may be a sign that the valve cover gasket is either cracked or loose. Oil escaping from a broken gasket can be burned off by the engine's high temperature, creating the smoke. Because it can seriously affect oil levels and overall engine operation, we recommend shutting down the engine immediately and having it checked by a mechanic at the first sign of smoke.