Thanks for the input so far, I appreciate it.
As for the fuel feed O-ring, I did replace the O-ring as soon as I
realized there should be one there. It wasn't there when I took it
apart so I didn't know it needed one. The fitting had been leaking,
which is why I used the thread sealer. As soon as I realized the
groove in the feed line was for an O-ring, I put one on there and of
course the leak was gone.
When I said I torqued the pushrods to spec, I meant "per the book
spec", which I think is 163in/lbs then 30 degrees. I even drew a 30*
triangle and put it under my torque wrench so I could be as near 30* as
Back to the originial problem...
I did lube both the injector holes & O-rings before I re-installed the
injectors, and all of the O-rings are new. No gasket material was left
anywhere on any surface, upper or lower. I'm really anal about that
stuff, I probably spent two hours or more cleaning.
I did some more work on it last night, I don't think it is a clogged
injector anymore. It continues to reset the P0306 (cyl 6 misfire) code
after I clear it, enough that I am confident that it is that cylinder.
I pulled the #6 plug, it looked awful. All the other plugs were just
slightly white but normal, #6 had black crud caked on the electrode,
and the center (platinum) electrode was cooked away (there was a hole
in the porcelin where the electrode should be), and the plug was
slightly wet, hard to tell if it was fuel, oil, or coolant though.
Definately a bad plug, but unfortunately not the cause of my problem,
probably just a symptom. I swapped that plug with #1 I'll replace them
all next time I work on it, I couldn't get plugs at 11PM last night. I
cleared the code and restarted the car, but it still gave me a cyl 6
misfire blinking SES, and no other codes. I was hoping it would travel
to #1. So now I am really sure there is some problem with cyl 6.
I can hear a vaccum leak around the #6 intake "tube". Haven't been
able to pinpoint it though, and I'm wondering if I'm really just
hearing the IAC sucking air since the throttle is right next to #6. It
is really pronounced when you kill the engine (sucking sound gets
louder). I tried tracking it down using a piece of hose to my ear, but
haven't been able to find it. I'm wondering if the lower intake didn't
seal against the head.
I'm also going to try swapping the 3/6 coil with one of the other coils
to see if the problem moves.
Any new troubleshooting tips? I'm sure the thick black crud on the #6
plug indicates something, but I don't know what.
Thanks again for the help and any suggestions.