993 Faq Frequently Asked Questions about the Porsche 1994-1997 993


OBD-II CEL : Carbon buildup issues (long)

Filed under: Known Problems — Jeff 993TT @ 5:15 am

Here is an excellent article by Steve Weiner at Rennsport Systems regarding carbon buildup issues. This includes valve guide wear and exhaut port problems.

Rennlist Discussion Forums – OBD-II CEL : Carbon buildup issues (long)

Rennlist Discussion Forums – Cleaning SAI Ports…DIY Write Up

1 Comment »

  1. I have a 98 993 with sport cams, cat bypass pipes and chip upgrade by FVD. I recently added a lightweight flywheel and it stalls constantly , even though my computer has supposedly been upgraded to compensate for the flywheel. I have read that the idle control valve can be tweaked, but cannot find out what the tweak is. Can anyone help me.


    Comment by Steve Reso — 01/28/2009 @ 12:34 pm

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