Wife's Amica Si engine management light came on last night and engine spluttered - no real power. Managed to get it home ok and I put an obc reader on it. It gave error code P0303 - "Misfire on cyc number 4"
So this morning I put in a new set of plugs gaped to 41" (Nowhere have I been able to find a workshop manual for this thing). I hope that gap is a good guess! I'm not even even which cyl 4 is (is it at the clutch end of the engine?).
Started up - and (yes) is still missing a beat. The leads are clean and dry (maybe look for sparks/lead-breakdown when it gets dark). Having said that, even when the leads are pushed onto the plugs they still wobble about - is difficult to say if they are really on.
At this point I'm stuck for ideas so would appreciate advice as to what to do next? If it's the ecu - that's a big job I guess?
ps If anyone has a w-manual for sale pls let me know.