www.vf-engineering.com BMW E36 (‘96-’98 incl. ‘99 M3) US MODELS
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Rev 1.10.25.06
20. Fit ¼” barbed check valve (A) in-line with EVAP (B) solenoid valve vacuum line. Ensure that the white side of
the check valve is facing the direction of the EVAP solenoid. This valve may be located on the d/side frame
rail area on some models. This check valve is a back up valve in case the OEM valve fails. Its purpose is to
prevent manifold pressure travelling the wrong direction in the EVAP system (fuel tank ventilation). You can
blow into the valve to verify which way it operates. You should be able to blow into the white side only which is
why the black side will face the direction of the manifold. Our check valve is supplied with silicon hose to assist
for fitting on other applications. You may need to remove it for your specific application (S52).
