View Single Post
  #7  
Old 09-10-2012, 08:05 AM
j cAT j cAT is offline
AF Fanatic
 
Join Date: Oct 2007
Posts: 10,898
Thanks: 8
Thanked 432 Times in 431 Posts
Re: 1985 Caprice Classic - Problems starting

this is a quadrajet 4 barrel carb. the choke pulloff is a vacuum controlled device. when the engine is cranked vacuum opens this throttle plate .172 inch gap to then get the engine running when cold.

since this plate closes when the throttle is depressed that is proper, so that would mean the choke pull off has a vacuum leak/hole in the diaphram. replace this part and adjust so that you get the proper opening when the engine is running/vac on the pull off.
Reply With Quote