GFB Deceptor Pro II Blow-off Valve (part T9503) - Manual (Page 6)

Maintenance
All GFB valves are designed to be as maintenance free as possible. In most cars the small amount of crankcase and
rocker-cover blow-by oil that is directed into the intake system is enough to keep the piston well lubricated. However,
in some cases oil deposits or dirt can dry out and create a build-up on the piston that causes erratic operation or
sticking. If you notice a grey film on the piston or erratic venting behavior, it is a good idea to clean the valve.
This is best done with the valve removed from the car. Flush out the piston with a penetrating spray such as WD40,
whilst working the piston up and down. Using a rag, wipe off as much of the grime and build-up as possible. Re-
lubricate the valve by applying a small amount of engine oil to the piston through the side outlets and the underside of
the valve, and working the piston up and down by hand. It is a good idea to keep the trumpet area clean and free from
oil, as it attracts dirt which can result in damage to the piston.
Customer Support
GFB’s engineers are always available to help with any enquiries or issues you may have with the installation or use of
your GFB products. Simply email
[email protected] or phone:
Within Australia:
02 9534 0099
International:
+612 9534 0099
This product is intended for racing use only, and it is the owner’s responsibility to be aware of the legalities
of fitting this product in his or her state/territory regarding noise, emissions and vehicle modifications.
GFB products are engineered for best performance, however incorrect use or modification of factory
systems may cause damage to or reduce the longevity of the engine/drivetrain components.
GFB recommends that only qualified motor engineers fit this product. Warranty is for the period of one
year from the date of purchase and is limited only to the repair or replacement of GFB products provided
they are used as intended and in accordance with all appropriate warnings and limitations. No other
warranty is expressed or implied.