1998 V70 AWD PO442 Evap small leak

TheLoneAviator · Post by **TheLoneAviator** » 04 Sep 2014, 09:59

I have a pending P0442 code also, small evap Leak.
New Gas cap
checked the canister, don't see any cracked hoses.
suggestions?

Post by **rmmagow** » 04 Sep 2014, 10:47

Search around here. Very common and hard to find issue. Some obscure hose will have split or something.

Post by **jblackburn** » 04 Sep 2014, 10:57

V70 AWD - canister is at the front of the car, tucked inside the bumper in front of the drivers side tire. Pull it down and have a look at the hoses on top of the canister. If it's not cracked there, follow the hose back to the gas tank area.

Ramps would be advisable

TheLoneAviator · Post by **TheLoneAviator** » 04 Sep 2014, 11:46

Already pulled the canister down, all looks quite good there. The local independent Volvo guy says the gas tank often leaks and they have to replace the tank. (usually) $125 to diagnose the vac leak prob.
Might be money well spent.

Post by **deepsouth** » 04 Sep 2014, 15:08

Went through this for months on same model. Here's my fix:

https://www.matthewsvolvosite.com/forums ... =1&t=63069

TheLoneAviator · Post by **TheLoneAviator** » 04 Sep 2014, 23:32

Thanks for the link, I'll start on that this w/e. Thanks

Post by **abscate** » 05 Sep 2014, 05:04

TheLoneAviator wrote:Already pulled the canister down, all looks quite good there. The local independent Volvo guy says the gas tank often leaks and they have to replace the tank. (usually) $125 to diagnose the vac leak prob.
Might be money well spent.

It's not the gas tank but hoses that break. The splits and holes can be hard to see if you aren't up on a lift.

TheLoneAviator · Post by **TheLoneAviator** » 07 Sep 2014, 09:48

OK, I think almost all the vac lines under the hood are fixed, except one. #2 in the photo is a ~3/8 hard line that is running under the intake to the area of the PCV box but isn't connected to anything. Is that a big deal?
I think the small evap leak is fixed, have to wait a few days & see it it pops back up.
AND... could anyone verify where the 3 lines in the photo should go? these diagrams are vague in that area.
Oh, One more thing: The left side of photo has 2 nipples, (one visible). One nipple goes to the blue vac TCV, where does the other nipple go?

Post by **jblackburn** » 07 Sep 2014, 10:01

If that's not connected to the PCV box, your engine will be spewing oil out of every seal it can. That fat line provides vacuum to the PCV system when the car is under boost.

TheLoneAviator · Post by **TheLoneAviator** » 07 Sep 2014, 10:05

Awl....right, that's what i need to know. I don't guess there's an easy way to see up under there how to connect that....