tvwbug

I've been listening to this sound for a while now, about 3000 miles. the car seems to run fine. i changed the oil today with Mobile 1 0W-30 and a M1-107 filter sound is still there. i have 78,000 on the clock and occasionally do some "spirited" driving. when i first start the car and drive i get a louder ticking for about 30 seconds, i dont believe its piston slap because it doesn't do it loud until i drive, then it quites down, right before the trans shifts i hear it more pronounced. the noise never goes completly away. check out this video, it is not much to look at, just listen. i was laying on my back under the car while it was on ramps. the noise is in the front of the engine near the harmonic balancer. it is barely auditable from above with the hood open.

http://www.youtube.com/watch?v=Fw7iZ7GbTz8

tvwbug

any suggestions?

printmanjackson

buddy, this is not something you are going to get fixed over the internet. Take it to a shop and have a mechanic listen to it.

Wkeil99hardtopred

try corvette paramedics. they arent far from you.

c31980

have the same sound when cold start ... after engine warm up it subside but not Completely i know its the oil pump seal (oring) .have to be replaced but its kind of pita to do:
steering rack have to come down,balancer ,and all frontal engine part to replace the ..seal or the O ring ,,, u need some gaskit also some prof toll to get the balancer

note : before u go with my route please check and re-check every Possible aria

hope that help

CQRT

I've heard the same report from a number of C5 owners - -one guy laid out five bills for a new harmonic balancer - - sound's still there.

Mine seems to quiet down quickly on cold start up - - I'm guessing smog pump - - everything else is in good shape at 60k miles . . .

Heck- my Lexus does the same thing and the dealership says "don't worry - - it's normal!" . . .

happiedazs

Here is a longshot --- check that you don't have a loose spark plug.
That would make a ticking noise like that. Also, check your serpintine belt for damage. Check the easy stuff first.

tvwbug

my oil pressures are fine hot and cold so i dont believe its the oil pump seal. my harmonic damper does wobble at idle, from what i've been researching that seems to be unacceptable. i just dont understand what would tick from a harmonic balancer. this weekend i'll pull the belts off and see what i find.

ajchance

It's hard to tell from your video, but I think I have the same sound in my '01. Sounds almost like a faint staccato exhaust leak. Does seem to improve after car warms up. I also have a wobbly HB. Looking forward to hearing other ideas.

Frans96ss

Hard to tell from video. If you wanna bring it by the shop i can deff take a listen to it for you. You are about 45 mins from us.

ajchance

tvwbug, could you follow up with us when/if you get the car eval'd? Thanks!

SoDiezl350

This was my problem. Loose spark plug eventually came out all the way.

A.R. Shale Targa

Sounds to me like the common LS sewing machine noise most lifters can
make. Some have had decent results by switching to Mobil 0w40 which
is a european spec blend that reduces (not eliminates) the clatter.