Gold Lifetime Member
Join Date: Dec 1999
Location: Yorkville, Illinois USA
Right on, Tom. It's gonna be fuel pressure, probably from a dirty filter. Bad news is, the filter is in the damn gas tank! I suppose before hassling with that, it couldn't hurt to check the tune-up. Plugs, wires, cap, hei rotor that burned a hole through the middle, etc. Then pull the gas tank. At WFO, it goes to open loop, and runs lean. At slightly less, it stays in closed loop, and the computer compensates for the low fuel pressure via the O2 sensors and keeps it richer.