RepairPal Certified shops can diagnose and repair your 2008 Honda Civic. They provide transparent pricing with a minimum 12-month or 12,000-mile warranty on repairs and services.
Describe SPECIFIC conditions when it knocks--sitting still at idle in neutral?? 3rd gear under load , only 1-4 , not 5th or reverse? While turning at 40 mph?? ......Get the idea???