they don't really do valve adjustments on modern cars (yes, '90 is considered modern)
my '96 has valve tick, it's probably just crud in the motor and might not matter much. if it's pretty loud get it checked though, the engine could be warped
The 2008 Honda Civic has 16 valves.
The 2014 Honda Civic has 16 valves.
The 2003 Honda Civic has 16 valves.
The 2010 Honda Civic has 16 valves.
The 2011 Honda Civic has 16 valves.
The 2005 Honda Civic has 16 valves.
The 2009 Honda Civic has 16 valves.
The 2013 Honda Civic has 16 valves.
The 2004 Honda Civic has 16 valves.
The 2001 Honda Civic has 16 valves.
The 2002 Honda Civic has 16 valves.
The 2006 Honda Civic has 16 valves.