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Miata Mailing List: January 1993, Message #143
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From: (none) Subject: Hydraulic lash adjusters bulletin Date: (none)
I keep getting requests for a copy of this bulletin. You shouldn't need it if your dealer is worth a damn. They'll have a copy of it (or can get one from MoA), and it really doesn't say very much any- way. There is no recall or anything of the kind. The bulletin just says that if a customer complains of noisy valves, this is how the dealer is to respond. The replacement parts are not even going onto new Miatas. This is *not* a performance enhancement. It is simply a way to make an annoying noise go away. (I'll leave it to you to determine whether the more annoying noise is the valves themselves or the customer's complaining about them.) - Steve Bruun