bbexotics
Veteran Member
- Joined
- Oct 14, 2012
- Location
- albuquerque
- TDI
- 2004 Passat,2006 Jetta, 2003 Jetta wagon, 2017 Cayman S
Relay 109 is bad replace it, it should start right away
Relay 109 is bad replace it, it should start right away
Andy,Here is a link to an exploded view of the IP.
Scroll down the list and look for parts 135 and 136 on the list. (control valve and overflow valve).
http://pics.tdiclub.com/data/500/Manual_Pump_Parts.pdf
I realize that but where is the vent in these mk4's?There is a negative-pressure vent in all fuel tank systems; if there was not the tank would literally collapse or the engine would be starved for fuel. Since tanks are relatively thin-wall and not pressure (or vacuum) rated they would collapse.