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86-95 Trucks & 4Runners 2nd/3rd gen pickups, and 1st/2nd gen 4Runners with IFS

Cold exhaust on cylinder 3

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Old 12-05-2020, 12:07 PM
  #21  
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Swapped out the injector on 3. Running great now. Thanks for all the advice for testing the wiring and injector. I posted a pic of the bad injector as well as a pic of an empty blue vacuum post directly behind the passenger side fuel rail. Any idea what connects to that?


Old 12-05-2020, 12:24 PM
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The blue piece in the second picture is some heatshrink on a wire, from what I can see. It looks like it goes to the item directly under it, but I hay be wrong about that.

Good luck!
Pat☺
Old 12-05-2020, 02:19 PM
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Im pretty sure it’s a vacuum post with 2 ports. Bottom one is connected.
Old 12-05-2020, 02:53 PM
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I grabbed the first vacuum schematic I could find, but if you’re looking at the bvsv then I say that one vacuum line ends up at the throttle body and the other at the charcoal canister. But take a look at this and see what you come up with


Old 12-05-2020, 04:45 PM
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That’s it. My vacuum canister line was not connected. Thanks. This is a great forum...lots of helpful members.
The following 2 users liked this post by Jhoward:
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