Hot Rod Forum : Hotrodders Bulletin Board - View Single Post - Running rough under load mystery.
View Single Post
  #9 (permalink)  
Old 09-20-2013, 03:23 AM
Blown496 Blown496 is offline
Registered User
 
Last photo:
Join Date: Jul 2011
Location: Wentzville,MO
Posts: 185
Wiki Edits: 0

Thanks: 0
Thanked 2 Times in 2 Posts
I had the same thing happen years ago. It would sometimes even drop a cylinder then pick it back up. Plugs black and no power. Chased my tail for a long time. A simple test proved to be weak spark. Pull a wire, put a piece of metal in the end and look at the spark jumping to the plug. If it short and yellow it is either coil or wires. Should be snapping and blue.
Reply With Quote