Off idle stumble can be bad plug wires. How old are yours?
> Message: 1
> Date: Mon, 12 Jul 2010 13:04:08 -0600
> From: "Bruce Andrews" <[email protected]>
> To: <[email protected]>
> Subject: 94 M edition
> Message-ID: <aef1d74eb80540359f7e55290cf9e...@bruce>
> Content-Type: text/plain; charset="us-ascii"
>
> I have a 94 Miata; I have hade some problems with it. It has 125K on it the
> compression is quite good at 150, 150, 149, 149 respectively. I changed the
> timing belt 300 miles ago. The one on it did not look bad but was somewhat
> stretches. My main concern is when I set the engine to TDC the exhaust cam
> gear marking was off by 3 teeth counterclockwise. The engine sounded OK
> except for a knocking noise from the alternator. I set the timing marks as
> per the manual. The engine started right off and I was able to set the
> timing to 10 deg. BTDC. I ran it for 100 miles then moved the timing to 14
> deg. BTDC. The engine ran good for the first 50 miles, but developed a miss
> off idle. I just checked the timing and it is right on 14 deg, BTDC.
>
>
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