Constant air flow from fuel filler

[zoenryan]

Hi - recently bought a MY07 VZ wagon for the misses - got it cheap as the timing chains were stretched and had a lot of fun replacing them . Running well now but still a couple of issues.
I have read a lot about these cars being difficult to start after filling - have the same problem.
Noticed that if you let the filler gauge raise to the full mark first - then crank the engine its a lot better !!!
The other one is a constant flow of air escaping from the fuel filler - a lot. something is pressurizing the tank , and believe the constant flow of air is taking a lot of petrol vapor with it .

Any ideas ? - By the way - this is what I found when starting to replace the timing chains - left bank

 

[99notout]

Well seeing as nobody has replied, I will try and help. It is probably a faulty purge solenoid, have a look at the diagram attached.

 

[lowandslow]

Why are there no teeth on your cam gears?

 

[zoenryan]

Well seeing as nobody has replied, I will try and help. It is probably a faulty purge solenoid, have a look at the diagram attached.

Thanks for that - I have been looking at various post on the net and also noticed that the vacuum line from the purge valve to the inlet manifold is broken - I read somewhere that if the engine vacuum is weak , the ECU will try to richen the mixture, and have had a few MIL lights with the Fault code for "too rich at idle" - so all seems to fit . Will fix the hose this week end and see if this clears it . also found a good article on how to check if the PV is holding vacuum and working properly .I guess what surprised me was the volume of air coming out - like an almost constant farting noise .
How often does the PV operate ?

 

[zoenryan]

Why are there no teeth on your cam gears?

Dont know - guess they are made that way. Notice the slack in the chain on the right with the chain sitting properly on the sprocket . also notice the chain tensioner at full extension

Compare to this one with new chains, guides and tensioners fitted

Big difference.

 

[Silverbird]

Impressed with the detail in your pics. Very helpful for people seeking to do their chains, and to understand what happens. Thank for your trouble.