Due to the weight of the intake manifold, heat and age, failure of the S14's Intake Manifold Gasket (Insulator) is common.
The results are everything from an idle fluctuation when cold starting or warm idle... to worse: running lean at wide open throttle! This has caused engine damaging detonation and the need for many rebuilds! Remember to take notice if your S14 starts to have idle issues.
Tech Notes:
If you are performing a repair that requires removal of the Intake manifold, replace these gaskets if you don't know when they were last done. We recommend replacing them every 100k miles or less if your S14 sees fast use.
- Price is for individual Insulator Gasket. *** 2 Required per Engine ***