I cant figure this one out. Mainly after engine reaches normal opperating temp, you pull up to a stop engine idles briefly then start a hard miss. shift to nutural idle smooths out. Heres a list of what has been done new plugs new wires new cap new rotor timing belt cleaned throddle body no engine codes
Opinion only.
Injector/s need cleaning?
At idle any faults which cause air to be admitted to the engine (air leaks) are a lot more noticeable due the demand of air is small and any additional sources become significant. Check the inlet manifold and throtle-body for tightness or gasket damage. Not sure whether these angines are sensitive to crankcase air leaks (PCV system), check dipstick seal, rocker-cover,oil-cap seal.
Valve condition can cause idle quality problems. (vacuum gauge to inlet manifold to test for eratic readings)
Engine management computer and sensors: Base ignition timing and mixture should also be checked. (Timing light and exhaust gas analyser)
Agree the 'computer' should be expected to throw up alarm code/s in this event. The initial delay before rough idling commences seems to point to a management issue of some sort.
Jason
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