Miata Mailing List: December 1992, Message #126
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   From: (none)
Subject: Re:  Throttle and Clutch
   Date: (none)

Herb Samuels  writes:
>I've had my Miata for a little over 3 years but do not have much
>milage (12,800).  I recently drove a 1993 Miata and noticed some
>subtle differences in the throttle response and clutch uptake.  These
>may not be differences in design but that my car needs some adjustment
>or other work.  First, there is a very slight throttle hesitation from
>the idle position.  I changes my spark plugs about 6,000 miles ago to
>Splitfite plugs and noticed an improvment in throttle response at that
>time.  The plugs now still look O.K.  Does anyone have any suggestions?
There is a service bulletin out on a hesitation problem that som '90
Miatas have. I would guess that this is your problem. Call Mazda's
customer relations department if the dealer can't get a clue and
maybe they can point you in the right direction. If you still have a problem
I can check the back issues of _Miata Magazine_ I know I've seen it mentioned
there.

Your SplitFire plugs should last at least 30,000 miles. I replace mine after
35,000 and they were still OK (though they needed to be re-gapped).

BTW: I'm over 60,000 miles now and no problems for 35,000 miles. I *did*
have the clutch replaced at 23,000 (on warrentee), this is another common
'90 problem. 12,500 does seem a bit low for that, however.

Mazda customer relations is (800) 222-5500.

- Alan