Mazda Miata: Rough Idle Question

I've got a '90 with 102K and have developed a really rough idle. Not much
of a wrench-turner, but looking for advice as to what may cause this.
Sometimes stalls coming to a stop and sounds like it's missing in 1st on
acceleration. Up at speed seems to run fine, but do notice a lack of power
as I go through the gears.

Air filter on 6/22/04 and wires last year.

"Jeff & Missy" <net> wrote:
 

So you ran injector cleaner through and checked the blue
sparks produced by the spark plugs.

Maybe someone else has something else specific to suggest.
I can only look at the Enthusiast Manual:

Disconnect ISC wiring connector while idling and check that
clicking is heard from valve.
Disconnect oxygen sensor wiring. If fault improves, check sensor.
Stuck air flow meter.
Check ignition timing.
Put a screwdriver against each injector and listen
for operating clicks.
Check fuel pressure.
Defect ECU.
Low engine compression due to wear or damage.
Air leaks or obstructions in intake system.
etc.

Also check the crankshaft nose problem on miata.net

Leon

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