Unknown noise
#1
Instructor
Thread Starter
Unknown noise
I'm trying to find the source of this noise
. It seems louder underneath the car. I'll be able to get under it tomorrow but I was hoping someone could give me some ideas based on the noise. It's a banging, clanking type noise and is directly related to rpms.
Any ideas would be greatly appreciated!
Any ideas would be greatly appreciated!
#2
Melting Slicks
I'm trying to find the source of this noise Noise. It seems louder underneath the car. I'll be able to get under it tomorrow but I was hoping someone could give me some ideas based on the noise. It's a banging, clanking type noise and is directly related to rpms.
Any ideas would be greatly appreciated!
Any ideas would be greatly appreciated!
Last edited by 3D-Aircrew; 11-10-2018 at 06:27 PM.
#3
I'm trying to find the source of this noise Noise. It seems louder underneath the car. I'll be able to get under it tomorrow but I was hoping someone could give me some ideas based on the noise. It's a banging, clanking type noise and is directly related to rpms.
Any ideas would be greatly appreciated!
Any ideas would be greatly appreciated!
#4
Instructor
Thread Starter
It's weird. Sometimes I don't hear it and at other times it's more pronounced. It's tough to tell when driving on the highway whether it quiets down or the road noise drowns it our. It seems louder during acceleration from 20-40 mph. I need to change the oil tomorrow so I'll run it when i have it up on jack stands and see if I can pinpoint it.
Thanks for the replies.
Thanks for the replies.
#6
Instructor
Thread Starter
Update on noise
I jacked up the car this morning and ran it. I listened to it with a stethoscope and it seems the loudest when I touch the valve cover bolt above the #5 plug. I guess the next step is to pull of the valve cover. I haven't done that on the later c4s. Can I get away with just ticking in back on or should I go get a set of gaskets? If I run it with the valve cover off is that going to make a mess?
Thanks!
Thanks!
#7
Instructor
Thread Starter
Update #3
I also have a 19k mile 95 LT1 coupe as well as the 96 vert with them problem. I almost never drive it. I listened to the same area and I can also hear a tapping but it seems less pronounce. Now I'm unsure of the next step. Is it possible that a lifter could only make noise sometimes? At times the noise is more pronounced and it doesn't seem to be consistent. I'm doubting it's exhaust as it doesn't seem any worse when it's cold.
Any ideas would be greatly appreciated.
Any ideas would be greatly appreciated.
#8
Melting Slicks
Check your motor mounts for leaks. If they are leaking this may explain the noise and they should be replaced.