so ive just bought a 03 vy ss with 74k on the clock n got a few questions. first off i dont know much about cars so any help would be greatly appreciated in the last 2 weeks ive noticed a vibration through the whole car between 110km/h and 120km/h any ideas? i recently put new tires on the back n thought it could be a wheel vibration but not sure. second when i pull up to lights n its idling i can hear a faint tapping in the motor someone said it could be and exhaust leak from around the pacemaker extractors but doesnt seem like it to me (but i dont know much about cars either) or maybe lifters? third there is a bit of a flat spot when i put my foot down from 1500 rpm to 2000rpm, i have a friend who is a bit more mechanically minded then me n he reckons it could be from the exhaust (its got pacemaker extractors into 2 1/2" i think it has highflow cats into 3 1/4 xforce from cat back) any ideas? also it has an ss induction cold air intake n ive heard theyre no good should i take it off??
ok then, na the fella i bought it off got it serviced by ultratune at 70k i was gonna do it again at 80k.. got any ideas about the other things?
Viabration. Wheel balance Tap. Could be lifter's, Could be piston slap. Could be exhaust leak, Hard to say without a general location. Just need to open the bonnet and try pinpoint where it's comming from (Left-Right-Top-Bottom) Flat spot. Try a good injector cleaner. Clean maf. Get a good Tune up. Plug's lead's Oil. filter's. This should eliminate the issue. Good Luck
