Why it matters: The primary chain transfers power from the engine to the transmission, and improper tension can cause noise, wear, or even engine damage. When to check: Harley manuals recommend ...

Q: I have a 1999 Nissan Maxima with only 57,000 miles. I hear a clunking sound at idle from the engine bay. Could this be the timing belt? I actually do not know if this engine has a timing belt or ...