Hot Rod Forum : Hotrodders Bulletin Board - View Single Post - firing on two cylinders
View Single Post
  #2 (permalink)  
Old 08-22-2008, 02:51 PM
Jmark's Avatar
Jmark Jmark is offline
Hotrodders.com Moderator
 
Last photo:
Join Date: Sep 2003
Location: phoenix
Age: 61
Posts: 4,786
Wiki Edits: 0

Thanks: 0
Thanked 3 Times in 3 Posts
Well, it's kinda time to go back to ground zero and start checking things.

You say you changed cams?
1. Are the timing gears set up correctly?
2. Are the valves too tight? Loosing compression?
3. Is the dist. installed with the rotor pointing to #1 wire when the engine is at TDC on #1 cylinder?
4. do a compression test. ALL low would make me re-visit the cam/chain install. Some high and some low would tell me to re-ck the valve adjustment.
5. Did you loose the ground to the HEI? Crappy spark will cause a timing light to not work, or work sometimes.
6. Is the HEI a known good unit?
7. Was the engine a known good unit? LOL

Just things to check. Sometimes it's good to go back to square one and see what got missed.
Reply With Quote