jonecap

On my vacuum canister located on the front driver side of the car underneath the headlight assembly, there are 3 vacuum lines coming out of the top of the canister and one out of the bottom. I know where the top 3 lines go due to the diagrahm on the radiator shroud, but cannot determine what the line coming out of the bottom of the canister is supposed to connect to.

Can someone with a C4 tell me where the line coming out of the bottom of the canister goes to? Thank you in advance Corvette brethren.

mseven

jonecap

mseven,this is a great diagrahm, but it does not show the hose coming out of the bottom of the canister. It just shows the 3 on the top.

Does anyone know where the hose on the bottom of the canister goes?

mseven

oops I must have mis read your post sorry, w/out looking at mine, I believe the one out of bottom goes to outside between frame extension and lower trim above the front spoiler on drivers side, vent to fresh air.

JeffM1243

Do you have one hose into a tee and two hoses off to nowhere? Open at ends? My 90 was the same, car ran fine with these hoses plugged or unplugged, no codes ...I plugged them anyway....This hose does not appear to be on the emissions schematic....

JeffM1243

Correction.......Took a look at the FSM, page 6E3-C3-1, the lower tube on this vapor canister is an "air inlet/drain tube" and should be left open...Diving under the hood with pliers now....

jonecap

Yep. Mine is the exact same way. 1 hose out from the bottom of the canister into a T and two hoses connected to nothing. My car is running fine...just doesn't seem right.. Thanks for looking it up JeffM1243...