Hello All,

I've been having a problem with my fuel injection system for months now. No
one can seem to fix it. I have installed all new sensors, AFM, checked,
cleaned and reconnected all grounds. After I installed the AFM she ran
great for about two weeks, then without warning back to running extremely
rich, I get a normal running voltage of .95v on the O2 sensor after warm up
with a peak of over 1v. However, when idling O2 fluctuates normally. All
other sensor readings on the Digitool are normal. The fuel pressure is
normal I'm told by the latest mechanic to check it.

This is a real teaser<<also a pain in the butt>> It seems that the engine
is getting extra fuel from somewhere and that the O2 sensor cannot adjust
the mixture enough. I have a rebuilt 2.1 with 1:2.5 ratio rockers, is there
anyway that these could be causing the problem? And if so, why would it run
great for awhile then get so rich?

Any help would be greatly appreciated.
Thanks
Dave