Here's my question... What causes them to fail? to they become clogged with carbon buildup? Is it possible to clean them?
Why am I asking.... When the engine is cold, There is a ticking noise coming from under the hood... It is almost like a vaccume leak. But I've checked all of my vaccume lines, and no leak... I did however have a problem with the EGR valve on my old engine. Was doing the same thing (ticking). So I had that replaced and everything was peachy... I'm thinking that my EGR valve is bad now on this engine... Anyone want to comment??
Thanks
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2020 Subaru Outback Touring - Wife's first Subaru
2005 Volvo V70R - 5-cylinder love! :Heart:
** SOLD **1998 Subaru Legacy 2.5GT Wagon - MOST RELIABLE car I've ever owned
** SOLD **2006Subaru WRXSTi (Former "
Boxer4Racing.com /
Continential Tire" STi) - Built EJ22t block / EJ207 JDM STi "big port heads" - 9,000rpm MONEY PIT!!!
** SOLD ** 
1995 "Tree-Hugger Green" SVX L AWD(5 MT) --- "Gumby" 130K miles
#399 in MY95, my original love...