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· 1966-2013
Joined
·
13,740 Posts
If you've enough slack in the harness, swap injector wire on #3 with either #2 or #4 and see if the dead cylinder is still #3
(the injectors batch fire so it doesn't really matter what wire goes to what one)
If so, then check for actual spark at #3, and if present, consider that it is prolly the injector that's stuck or gummed up.

Viable to also shuffle the plugs around to see if the fault follows that particular plug to wherever it moves.

It may 'recover' after being warmed up and left to sit over night, but that's more wishful thinking than factual event.

Point of note:
All in~tank injector cleaner does is pick stuff up from the tank and lines then carry it to the injectors where it can create clogs.
To properly service injectors they need to be removed and sent someplace like OK Injectors or Cruzin Performance.
 

· 1966-2013
Joined
·
13,740 Posts
Perhaps this post will be of use.
The injector plug goes onto the injector itself, not a bolt or anything else.

As to removing the rail and injectors for service, yes, it can be accomplished by the at~home wrencher and has been done many times over by various forum folk who have left some really good threads with good pix from before/during/after the process.

The only problem that seems to crop up with any regularity is the rubber support bushing in the middle of the rail and how to get at it, or replace it due to failure.
 
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