How does the next paragraph end?

How to clean your egr valve
Clean and inspect the vacuum hose.
Remove the vacuum hose and inspect closely for wear (cracks or weak spots), then clean out the carbon deposits either with a spray can of carburetor cleaner or with a pipe cleaner if the deposits are hardened or compacted.
Inspect the egr valve for damage.
Loosen any bolts fastening the egr valve to the engine. Inspect the gasket lining the bottom plate of the valve.