1998 S-10 Pickup EVAP Service Port Hose Loose
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Joined: Sep 2009
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From: Colorado
1998 S-10 Pickup EVAP Service Port Hose Loose
Hi All...I just bought a 1998 2.2l 4 cyl pickup. I have been cleaning it up and found a unconnected hose coming off of the EVAP Service port hose. One side(towards front of the truck) goes to a valve on the passenger side of the motor and the other end is unconnected. I have attached a picture. The unconnected hose end is in the top right of the picture.
I just failed a smog test in Colorado for high HC and am wondering if that might be the culprit. I cannot for the life of me find an unconnected port for it to go into. Does anyone have any idea?
I do not show any codes but I do smell some unburned gas from time to time.
Thanks,
Remo
I just failed a smog test in Colorado for high HC and am wondering if that might be the culprit. I cannot for the life of me find an unconnected port for it to go into. Does anyone have any idea?
I do not show any codes but I do smell some unburned gas from time to time.
Thanks,
Remo
Last edited by remogw; Sep 8, 2012 at 1:52 PM. Reason: Update
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Joined: Sep 2009
Posts: 6
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From: Colorado
Update #1
Well the dealer actually gave me the drawings for my Evap System. Who knew?
I have attached what he gave me in the hopes that it may help someone else down the road.
Item 6 on the engine diagram is where my missing connection was. Note that it connects to Item 7 on the same sheet. (This is where my problem was.)
Now Item 7 turns into Item 1 on the fuel system sheet. That goes all the way to the lower port on the charcoal canister.
I have to assume this is why I was smelling raw gas fumes when I was driving. The fuel tank vapors were poring out of the open connection I found about 6 inches from my exhaust header down pipe.
I connected them all together with a new piece of hose and clamps. Now hopefully my P0440 Evap Leak error code which just came on today will soon clear. I will update if I pass my smog test.
I have attached what he gave me in the hopes that it may help someone else down the road.
Item 6 on the engine diagram is where my missing connection was. Note that it connects to Item 7 on the same sheet. (This is where my problem was.)
Now Item 7 turns into Item 1 on the fuel system sheet. That goes all the way to the lower port on the charcoal canister.
I have to assume this is why I was smelling raw gas fumes when I was driving. The fuel tank vapors were poring out of the open connection I found about 6 inches from my exhaust header down pipe.
I connected them all together with a new piece of hose and clamps. Now hopefully my P0440 Evap Leak error code which just came on today will soon clear. I will update if I pass my smog test.
Thread Starter
CF Beginner
Joined: Sep 2009
Posts: 6
Likes: 2
From: Colorado
Update #2
Well the truck failed the smog re-test.
So yesterday I bought a new catalytic converter, Walker Direct Fit, and gaskets. I took off the old cat today and it seem really light. When I got it down to the ground I noticed that I could see all the way through it! A previous owner had hollowed out the cat for whatever reason and just put it back on. No wonder I was failing the smog test.
I installed the new cat and it fired right up with no codes. No more raw gas smell either.
I plan to get it smog tested in a week or so when I get some fresh gas in there. I just put in some injector cleaner and don't want that to mess up the test.
More to follow...
So yesterday I bought a new catalytic converter, Walker Direct Fit, and gaskets. I took off the old cat today and it seem really light. When I got it down to the ground I noticed that I could see all the way through it! A previous owner had hollowed out the cat for whatever reason and just put it back on. No wonder I was failing the smog test.
I installed the new cat and it fired right up with no codes. No more raw gas smell either.
I plan to get it smog tested in a week or so when I get some fresh gas in there. I just put in some injector cleaner and don't want that to mess up the test.
More to follow...
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Joined: Apr 2025
Posts: 1
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Need list of numbers
Well the dealer actually gave me the drawings for my Evap System. Who knew?
I have attached what he gave me in the hopes that it may help someone else down the road.
Item 6 on the engine diagram is where my missing connection was. Note that it connects to Item 7 on the same sheet. (This is where my problem was.)
Now Item 7 turns into Item 1 on the fuel system sheet. That goes all the way to the lower port on the charcoal canister.
I have to assume this is why I was smelling raw gas fumes when I was driving. The fuel tank vapors were poring out of the open connection I found about 6 inches from my exhaust header down pipe.
I connected them all together with a new piece of hose and clamps. Now hopefully my P0440 Evap Leak error code which just came on today will soon clear. I will update if I pass my smog test.
I have attached what he gave me in the hopes that it may help someone else down the road.
Item 6 on the engine diagram is where my missing connection was. Note that it connects to Item 7 on the same sheet. (This is where my problem was.)
Now Item 7 turns into Item 1 on the fuel system sheet. That goes all the way to the lower port on the charcoal canister.
I have to assume this is why I was smelling raw gas fumes when I was driving. The fuel tank vapors were poring out of the open connection I found about 6 inches from my exhaust header down pipe.
I connected them all together with a new piece of hose and clamps. Now hopefully my P0440 Evap Leak error code which just came on today will soon clear. I will update if I pass my smog test.
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