Hot Rod Forum : Hotrodders Bulletin Board - View Single Post - Loud knocking when truck starts
View Single Post
  #2 (permalink)  
Old 01-27-2013, 06:25 PM
S10 Racer's Avatar
S10 Racer S10 Racer is offline
http://www.warsprints.com
 

Last journal entry: W.A.R. (Wingless Auto Racing) Sprint Car Racing
Last photo:
Join Date: Nov 2007
Location: At The Dirt Tracks
Age: 55
Posts: 1,888
Wiki Edits: 0

Thanks: 3
Thanked 61 Times in 56 Posts
Quote:
Originally Posted by Chevyman87 View Post
Hello all I am starting to have an issue with my 350 SBC that literally just started today. It all started when I pulled over at a gas station after driving 30 minutes on the freeway to fill up. After starting the truck, I heard a loud knocking noise that went away after about 30 seconds or so. I noticed that the noise seemed to be coming from the driver side of the motor. I also noticed that the sound was loudest if I stood where in between the cab and the bed of my truck. Anyway, I pulled the driver side valve cover and checked the pushrods by twisting them with my index and thumb and some of them were loose. After tightening them up, I started the truck again and the problem went away. However, on my way home I stopped by a relative's house and after getting back in my truck and starting it, the sound came back. Except this time it lasted longer but eventually went away. I don't hear it while I'm driving only when I've shut the motor off and let it sit for probably 10 minutes and start it up again. Does anyone know what it might be?
It sounds like you have a lifter bleeding down.
Reply With Quote