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I have a 1995 24v which ran fine until the oil seals went on the spark plug wells and filled the rear plugs with oil. Changed all these seals and cam cover gaskets and re-asembled but still running rough on rear bank. New plugs made no difference and the engine runs worse as it warms, which led many to think it was the insulation breaking down on the coil packs. Changed those on the rear bank but it still isn't right.
Wedging the throttle pedal in neutral to keep the engine at a constant 3000rpm, pulled off all 6 injector connectors, one at a time, and each one had an effect yet all the rear ones had a weak effect while all the front ones had a stronger effect.
Could this be cam timing gone wrong on the rear bank all of a sudden? If so what is involved to check it? The injectors are all fine by the way - had them all sent for ultrasound cleaning etc and the report said they were fine even before it. HELP!!!! Please!
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