Multi-choice problem: Continue writing the next sentence in this paragraph:

How to clean exhaust manifolds
Use your owner's manual to locate the exhaust manifold.
4-cylinder engines have one exhaust manifold. 6 or 8-cylinder vehicles have two manifolds.

pick from the following. + Look for the manifold in front of the engine block on a front-end driven vehicle. Find the manifold on the side of the engine block on a rear-driven. + Locate the plate for the exhaust manifold. 16 cylinder engines have two exhaust manifolds. + 7 valve manifold engines have more than one, although exhaust manifold engines have three smallest manifolds. Remove the engine cover and open the airbox (front) of the manifold. + Your vehicle should have four or more manifolds.. however, if you can identify the exhaust manifold just by looking in the manual, you can also locate the exhaust manifold with a flashlight, or do something other than searching yourself.
Look for the manifold in front of the engine block on a front-end driven vehicle. Find the manifold on the side of the engine block on a rear-driven.