[Shop-talk] mazda miata issue

[Wayne]

scott.hall at comcast.net wrote:
> not at all shop related, but it's my boss' car, I'm at work, and I figure you guys would be the place for the quick, correct answer. 
> his 1990 miata has an off-idle/tip-in 'miss' (I think). it idles okay, and at full throttle, it sounds and seems to pull okay as well. but when he just starts to put his foot down it seems to be missing. it sounds JUST like an old air-cooled vw bug. and it shakes, etc. 

www.Miata.net has a bunch of good info in their garage section.  And on the forums.  Wife & I have a 1990 too.  I'd guess maybe the vacuum plugs at the throttle body or back of manifold cracked or leaking.  Plug wires are notoriously short lived.

-Wayne