Thump thump thump
10-24-2002, 10:07 AM
#1
Member
Thread Starter
Join Date: Aug 2001
Location: Stratford, Ontario
Posts: 446
Likes: 0
Received 0 Likes
on
0 Posts
Car: 1984 Z/28
Engine: 383 stroker
Transmission: T-5
Thump thump thump
I am hearing a noise from my engine I suspect is oil-related. There's a tump thump thump sound coming from the valves (?) when I first start the car up that is worse when the weather is cold. It goes away when the car has had a chance to warm up. Is this from the oil having pooled in the pan and not getting circulated quickly enough or what? It's not low on oil. I have been keeping a close eye on that just in case. The noise speed goes up and down with the rpms. Lifters? ???
10-24-2002, 11:28 AM
#2
Moderator
Join Date: Jan 2000
Location: Mercedes Norte, Heredia, Costa Rica
Posts: 20,981
Likes: 0
Received 9 Likes
on
8 Posts
Car: 1984 Z28 Hardtop
Engine: 383 Carb
Transmission: 4L60
Axle/Gears: 3.54 Dana 44
It could be valvetrain noise. You could take the valve covers off while it's cold and see if there's any valve lash, or start it up and see if you can identify where the noise is coming from with a stethoscope.
10-24-2002, 11:39 AM
#4
Member
Thread Starter
Join Date: Aug 2001
Location: Stratford, Ontario
Posts: 446
Likes: 0
Received 0 Likes
on
0 Posts
Car: 1984 Z/28
Engine: 383 stroker
Transmission: T-5
I dont' know. I haven't changed them but I am the third owner of this car. I bought it in 1993.
Thread
Thread Starter
Forum
Replies
Last Post
breathment
Tech / General Engine
7
03-29-2002 07:07 PM
