I'm getting frustrated... Here's the scoop. 94 Transsport 3.1L ...
Throttle body fuel injection. 256 Kkm. Drives well... I had a rough
idle/loss of power. I figured a dropped a cylinder, and did plugs,
wires and rotor (they were due again anyway). Now runs smooth but
feels weak (down on power) and getting poor mileage. I put a new O2
sensor in (no change) and checked compression (all good)... plugs all
look the same, and disconnecting any plug wire affects the idle (so
it's firing on all). Vacuum is good.
I figure it's burning about 1/3 more fuel than it used to.
The CEL works, but other than at startup, it has never lit.
So, any idea's why it might be running so rich?? Other troubleshooting