Hoping experts on Escorts can help me out (posted here rather than in the performance category). Having a problem that is showing up as code P0304 – a misfire on cylinder #4. Here are some general bits of info and thoughts. I’d appreciate any further ideas or thoughts anyone might have. 1998 Escort 2.0 SOHC – automatic trans Head redone approx. 10k miles ago – compression good on all cylinders. Engine runs great most of the time. Misfires generally caused by: Faulty spark plug (all plugs look great – new when head was done), faulty plug wires (new when head was done) – switching #4 plug and wire to #2 cylinder made no change when fault code comes up so believe plug and wire is NOT the problem (also eliminated the coil pack since all plugs are firing as evidenced by plug condition when removed) Faulty crankshaft or camshaft position sensor – As the problem is intermittent BUT always the same cylinder this does not seem likely as I would expect a faulty sensor to cause a misfire on any of the four cylinders not the same each time (this because the sensors only send an electronic signal based on magnetic pulses caused by teeth on the crank and/or cam). Faulty fuel injector – as a misfire code will trigger if any single cylinder develops slightly different power than other cylinders this seems as though it could be the cause providing the injector is marginal (which would account for the engine running properly most of the time?) Faulty ECM – since it references crankshaft/camshaft sensor input to perform engine management and send signals for timing, injector firing, etc it seems as though this could be the problem if the flaw is a repeatable glitch. Faulty wiring or connector – assuming the connection/wiring is marginal this certainly could be an intermittent problem and would expect that the wiring to the fuel injector for #4 would be the culprit, right? Anyone have any experience with a similar problem and if so what did you do to correct? Thanks in advance for any ideas.