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XC70 Vacuum leak/ smoke test

Help, Advice, Owners' Discussion and DIY Tutorials on the third generation Volvo V70 wagon and XC70 crossover, and second generation S80. Are you an owner? Prospective owner? Get in here and join us! Start a new topic or comment on an existing thread.

2008-2016 V70
2008-2016 XC70
2007-2016 S80

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Year and Model: 2008 xc70
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XC70 Vacuum leak/ smoke test

Post by sjk5539 » Mon Oct 08, 2018 10:34 am


My 2008 xc70 got a p0442 (small EVAP leak) code and I am trying to smoke test to see where the leak is.
However, I can't figure out which hoses are vacuum lines and where the purge solenoid is.
I think I can use this line (picture attached) that is connected to the coolant reservoir...
Does anyone know where to introduce smoke?


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Year and Model: 2010 S80, 2008 LR2
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Re: XC70 Vacuum leak/ smoke test

Post by pgill » Fri Oct 12, 2018 12:52 pm

The line you identified is full of coolant

The line that you are looking for is shown below
fuel_vapor_line.jpg (84.81 KiB) Viewed 398 times
Good Luck Paul
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