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hope ya doing ok ..
a little something from that site you passed on..
Happster
01-31-2009, 07:35 AM
The spark plug well seals are a chronic problem with the lincoln ls. Along with the famous cracking degas bottle, it should have been a recall. They leak and allow oil to get into the spark plug wells and short out the coils, causing a misfire. If you're getting a blinking engine light, it is a misfire. Pull the code...301 is cyldinder one misfire, 302 cylinder 2, 303 cyl 3, etc. Cylinders 1-4 are on the passenger side, in ascending order front to back when facing the engine from the front (1 is closest to the grille). 5-8 are on the other side, same persepctive. Pull the valve cover caps, the coils and plugs. Be careful-the connectors are brittle on the coils! Look at the lower boot on the coils as you pull them out, particularly from the misfiring cylinder(s). If it has oil on it, that's your problem. It should be bone dry. Even a little oil is a problem. Replace the valve cover gaskets (dealer item only for 3.9l), including the spark plug well seals, replace the faulty coil(s) and put DOUBLE PLATNUM plugs in only!!...cheesy plugs can generate high resistance and trip faulty misfire codes. Your problem should be solved, until the idiotic gasket design fails again.
LDB..since it isn't running bad it may be just an easy fix there..oil setting off the sensor.
easy out is just a smog pass..sorta like a hall pass..
the above it certainly a reference for future questions concerning the ride..