So, it's time for new spark plugs. Your hands are covered in grease, you're twisting the ratchet, and –- snap. Half the spark plug stays lodged inside your cylinder head like a nonpaying tenant who ...

Replacing your spark plugs is important and usually a fairly simple process, but if they seize in the cylinder heads it's an entirely different matter.

Q. I have managed to shear off a new spark plug from my 2005 Suzuki GSX-R1000. What are my options for getting it out? Oz Stephens, email A. You may well have to lift the cylinder head to get at it, ...