[RESOLVED] Loppy Idle, Really Rich. Any ideas?

[knochgoon24]

So, I just finished a whole bunch of work on my car. I started it up, and after finally adjusting the BISS, I got it to idle around 800 rpm. Now, I didn't touch that screw at all while I was working, and it idled around 750rpm before.

Secondly, the car is running pig rich. It's really really bad. Every once in a while it backfires. I hooked up an OBD2 logger to it to read the o2 voltages. Both are less than .24v for the minute I ran it. I can smell the unburnt fuel in the exhaust.

When I pulled up the short term fuel trim. It's adding 17% more fuel at idle. The long term is at 12.5% right now.

So far, I've done boost leak test. It's good. Any other suggestions as to what might be wrong?

Here's 2 videos.

This is the engine idling. I did a BSE, but this still seems really rough.
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This is the exhaust. It's full 3" with a cat.
<object width="425" height="350"> <param name="movie" value="http://www.youtube.com/v/iP5eQUFS6XE"> </param> <embed src="http://www.youtube.com/v/iP5eQUFS6XE" type="application/x-shockwave-flash" width="425" height="350"> </embed> </object>

 

[TALONTRAX]

Pull the vacuum line off the fpr, & check that there`s no fuel inside the vacuum line . . . if there is, the engine is sucking raw fuel in & running pig rich, & the fpr. is leaking & needs to be replaced . . .

 

[knochgoon24]

No fuel in the fpr vacuum line.

 

[knochgoon24]

So, I just attempted to check the timing with a timing light. I'm not getting a spark on cylinders 1 or 4.

 

[knochgoon24]

Ok, problem solved. I had spark plug wires mixed up. Spark plugs in cylinders 1 and 4 were fouled.

 

[chris9149]

Mark thread as fixed / resolved so that others know it is fixed and can look here if they have the same symptoms / issues in the future. Glad you got it worked out!