VW TDI forum, Audi, Porsche, and Chevy Cruze Diesel forum banner
1 - 1 of 1 Posts

· Registered
147 Posts
A lot of the times the air bubbles come from the T on top of the fuel filter, it could have a crack or bad O ring,,,,there are other times that it comes from the water drainage valve at the bottom of the fuel filter,,,,, you will get rid of those air bubbles if you install a Lift pump most likely.
1 - 1 of 1 Posts
This is an older thread, you may not receive a response, and could be reviving an old thread. Please consider creating a new thread.