system evap leak... What can I check? - Maintenance and Repair Forum

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system evap leak... What can I check?
Wednesday, October 18, 2006 6:23 PM
So my car has been throwing this code for a while now. I forget the number, but I remeber it said "SYSTEM EVAP LEAK (LARGE)" Now Does this mean a vacuum leak? What parts on the car can I check for a leak?

Please help me out on this one guys!



2004 Cavalier
13.2@105........
Mods...
BFG Drag Radials
Saab Turbo kit
2.5 exhaust, w/cutout
Spec Stage 2+ Clutch

Re: system evap leak... What can I check?
Wednesday, October 18, 2006 7:20 PM
make sure ur lines going from tank to evap canister and back are good
Re: system evap leak... What can I check?
Wednesday, October 18, 2006 7:54 PM
Evap system is different that a vacuum leak.

I would first check the gas cap and make sure it's tight. If not, you have to have the system leak tested. Involves a smoke machine that puts smoke in the evap lines to see where it is leaking from.



Re: system evap leak... What can I check?
Wednesday, October 18, 2006 8:12 PM
most likely gas cap or filler tube coroded
Re: system evap leak... What can I check?
Thursday, October 19, 2006 4:08 AM
Jeff wrote:make sure ur lines going from tank to evap canister and back are good


Where is the evap canister?



2004 Cavalier
13.2@105........
Mods...
BFG Drag Radials
Saab Turbo kit
2.5 exhaust, w/cutout
Spec Stage 2+ Clutch
Re: system evap leak... What can I check?
Thursday, October 19, 2006 5:09 AM
what year is your car? earlier models had it under the fender by pcm later had it above the rear axle
Re: system evap leak... What can I check?
Thursday, October 19, 2006 8:41 AM
behind the gas tank.



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