[ohmycivic]

Okay, so I get the feeling the fuel/air mixture is running rich since I'm only getting about 30-40 mpg. The Thermo Paste is holding, so it's not an air leak into the manifold anymore. I even did a neat little trick to restrict airflow to the o2 sensor using spark plug defoulers. This seems to have helped a little bit in around-town testing, but I've yet to go on any substantial trips to really get a solid indication of how much. I'm still getting an amazing amount of sputter when I accelerate, and the engine still runs for a second or two after the ignition is turned off.

Sadly, I'm out of things to try since I'm not getting any ODB codes (then again, I wasn't in the first place so it probably never was the 02 sensor). Not really knowing what would cause this beyond a bum 02 sensor I once again throw myself unpon the helpful mercies of this forum. I've got a 1000 mile weekend coming up at 10AM tomorrow, and if I can't work out the kinks I'd really like to at least have some things to try during my stops -- so shotgun me with a bunch of ideas on things to adjust/check since I'll only have sparse internet connectivity. I'll be taking a mostly-full set of metric wrenches and sockets with me.

I'll be going over vacuum lines after I finish typing this, though I'm pretty sure a broken line would produce an error code. I'm also going to toss in a new air filter even though the one that's in there is a K&N... never know, it might not be restricting airflow enough...

I'll report back with results, in the meantime thanks in advance for all your help!