burning oil/running rich

[RyanL]

I was having the same problem. #2 and #3 injectors were sticking open and washing the cylinders as has been mentioned in this thread a couple of times. This was building excess crankcase pressure, shoving oil up and clogging my PCV Valve, which was then causing backpressure and oil to shoot into my throttle body through the valve cover vent (which seems impossible, but I've seen it with my own eyes).

I tested all the coils, plug wires, plugs, pressure regulator, removed and cleaned out my oil separator, replaced the fuel filter and PCV Valve with motorcraft ones. Finally had to break down and get some injectors when I *finally* found a Noid Light that would work on my EFI setup that wasn't $150.

Still smokes a little, but it doesn't lope and sound like a lawnmower anymore, and you can't hear the valves out the exhaust. Runs 400 times better. I'm going to check out that charcoal cannister like someone mentioned, though I've never seen any gas in the line to the throttle body. And I might just replace the ICM and FPR (even though it held 25 PSI for 2 minutes). I've been troubleshooting this for about a month now...getting sick and tired of troubleshooting all day and being tired.

*edit*
Just priced an ICM and a vaptor cannister. Yeah, not replacing those anytime soon, lol. When I bought a Duraspark II for my Fairmont Futura it cost me $20. I suppose in an EFI system they do a lot more.

Yeah, a lot of guys don't realize is that almost everything under the hood is related. Those cylinders of yours with the bad injectors are probably worn down more than the others (fuel isn't the best lubricant). This is also another reason to keep the A/F ratio correct (mostly oxygen and temperature sensor controlled).