Miata Mailing List: May 1996, Message #70
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   From: "Dennis J. HeRR" 
Subject: Re: Exhaust Pop - Rich Mixture
   Date: Thu, 2 May 1996 01:21:17 -0400

> >> Has anyone experienced a problem with exhaust popping due to unburnt fuel
> >> combusting in the exhaust manifold or header.
> >
> >I have the same symptoms / 'problem'.  There is a switch on the throttle
> >linkage that
> >is supposed to cut the fuel when you lift the throttle.  About two months
> ago
> >I
> >changed the plugs and examined this switch.  The backfiring was completely
> >gone for
> >
> >My car also has high mileage (118K miles) and it could be that the injectors
> >aren't
> >doing their job as well as they used to.
>
> A free flow exhaust, or very old muffler (with no baffles left) will do this.
> I have headers and Borla exhaust, it does it. I think it's cool.
> Les

Mine also does that and I thought that was the norm.  Also as Les said I
think it's cool. :)  Go out and have listen to MX-5 with carb.  It makes
really wonder sounds!

 Dennis (^_^;

  /\_/\   89 RX-7 - Red, too many tickets to keep it.
 ( - - )  92 MX-5 - Red, too much fun to worry about tickets.
 ==_Y_==  Dennis J. HeRR (dherr@triode.apana.org.au)
   `-'    Momo chan '92 red w/ hardtop
   Neko   Member of MX-5 Club of NSW #309
          Member of Miata Club of America #53709