Miata Mailing List: December 1999, Message #472

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From:	"Sean Fletcher" <sean@theswamp.com>
Subject:	Re: Help- hesitation problem accelerating from idle
Date:	Sat, 4 Dec 1999 11:37:55 -0500

Sorry about the MIME crap- just set up a notebook for surfing wirelessly in
the living room :)
-Sean
-----Original Message-----
From: Sean Fletcher <sean@theswamp.com>
To: Multiple recipients of list <miata@list.miata.net>
Date: Saturday, December 04, 1999 11:34 AM
Subject: Help- hesitation problem accelerating from idle


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>My '96m has 62K miles, and this problem has only been around for the =
>last couple months, pretty much since I changed my oil last. If I =
>accelerate from a stop anywhere above 2k rpm, no probs at all, but a =
>gentle start (1k-2k rpm), especially after several minutes at idle (i.e. =
>stoplight) will cause this hesitation/miss/hiccup for a half second or =
>so.
>I first suspected something with emissions/vacuum lines, but I don't =
>visually see  any problems. SHould I check PCV/EGR valves? My wires =
>(NGK) are less than a year old, plugs (NGK Extended reach) are less than =
>two months old, ignition timing set to ~+16deg BTDC. I can also get this =
>hesitation sometimes when blipping the throttle at idle, and the longer =
>it is sitting at idle the more likely the hesitation will occur.=20
>Yes, I usually "launch" at a higher RPM, but I'm afraid this is =
>indicative of a larger problem down the road. Other than this the car =
>runs great & pulls hard to redline... any ideas?
>Thanks...
>-Sean Fletcher
>'96M Edition, WPB FL
>http://www.theswamp.com/miata
>
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>
><META content=3Dtext/html;charset=3Diso-8859-1 =
>http-equiv=3DContent-Type>
><META content=3D'"MSHTML 4.72.3110.7"' name=3DGENERATOR>
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><DIV>My '96m has 62K miles, and this problem has only been around for =
>the last=20
>couple months, pretty much since I changed my oil last. If I accelerate =
>from a=20
>stop anywhere above 2k rpm, no probs at all, but a gentle start (1k-2k =
>rpm),=20
>especially after several minutes at idle (i.e. stoplight) will cause =
>this=20
>hesitation/miss/hiccup for a half second or so.</DIV>
><DIV>I first suspected something with emissions/vacuum lines, but I =
>don't=20
>visually see  any problems. SHould I check PCV/EGR valves? My wires =
>(NGK)=20
>are less than a year old, plugs (NGK Extended reach) are less than two =
>months=20
>old, ignition timing set to ~+16deg BTDC. I can also get this hesitation =
>
>sometimes when blipping the throttle at idle, and the longer it is =
>sitting at=20
>idle the more likely the hesitation will occur. </DIV>
><DIV>Yes, I usually "launch" at a higher RPM, but I'm afraid =
>this is=20
>indicative of a larger problem down the road. Other than this the car =
>runs great=20
>& pulls hard to redline... any ideas?</DIV>
><DIV>Thanks...
><DIV>-Sean Fletcher
><DIV>'96M Edition, WPB FL
><DIV>http://www.theswamp.com/miata</A><=
>/DIV>
><DIV> 
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