Hot Rod Forum : Hotrodders Bulletin Board - View Single Post - slight humming noise at idle and knocking? noise on slow acceleration
View Single Post
  #13 (permalink)  
Old 05-26-2011, 09:35 PM
techinspector1's Avatar
techinspector1 techinspector1 is online now
Senior Curmudgeon
 
Last wiki edit: DynoSim combinations Last photo:
Join Date: Oct 2005
Location: Hemet, California, USA
Age: 72
Posts: 12,799
Wiki Edits: 326

Thanks: 744
Thanked 958 Times in 807 Posts
If you're using header gaskets, the one where your....ahem....helper....broke the bolt off could have allowed the gases to cut the gasket at that spot and there is a divot in the gasket. No amount of tightening will help. Take the header loose and see if you have a solid gasket or not.
Reply With Quote