EVAP Canister Delete
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Cruiser
Joined: Apr 2018
Posts: 197
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From: Chicago
EVAP Canister Delete
I'm an ASE Master Tech and no automobiles inside and out but I'm not sure how the logic works on Harley systems. Can anyone confirm if deleting the EVAP canister and purge solenoid will turn a check engine light on? I've found a few bits of info out there related to the removing of the components but they were all on a Dyna, not a Softail, and they made no mention of any lights or codes that may have come on as they were focused on the deletion aspect and not really the consequences of the delete.
Thanks
Sars
Thanks
Sars
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Cruiser
Joined: Apr 2018
Posts: 197
Likes: 23
From: Chicago
Good to know. Thanks for the info. I didn't realize it even had the damn thing until I pulled the inner primary. From what I've found all non CVO models have the canister in between the downtubes but mine is actually bolted to the backside of the inner primary and no one makes a chrome version with the bosses in it let alone the threaded holes.
Unofficial HDF Chaplain
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From: san diego
to monitor there would be a method to measure tank vacuum, and there is no sensor for that, and a valve to switch off vacuum when tank cap is open
Last edited by harleycharlie1992; Apr 30, 2018 at 03:43 PM.
Grand HDF Member
Joined: Nov 2009
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From: Tampa
My 06 Night Rod triggered a CEL when I disconnected the purge solenoid. I fixed it by putting a 330 ohm resistor across it.
It should be mentioned that I had a California bike.
It should be mentioned that I had a California bike.
Last edited by Mattbastard; Apr 30, 2018 at 05:05 PM.
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Cruiser
Joined: Apr 2018
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From: Chicago
That's interesting. What YMM did you have? Mine is Cali also. As far as I know only bikes destined for sale into Cali have this EVAP option.
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Cruiser
Joined: Apr 2018
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From: Chicago
I think it would only need a fuel tank pressure sensor to monitor the decay rate of the vacuum pulled on the system or the pressure built up in it. I wonder if it still measures the purge solenoid circuit to see if it actually activated when commanded on.
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Unofficial HDF Chaplain
Joined: Dec 2009
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From: san diego
Looked at the wiring diagram for '15, only has a evap solenoid. I can't tell what ecu is reading, amp draw of solenoid, or resistance of it. Based on Mattbastards post, must be reading ohms. If you remove canister, and solenoid, install the resistor. On my 09 roadglide, It doesn't show at all, and I just left it. Doesn't hurt anything unless is visibly objective. According to schematic, there is no pressure sensor for tank pressure, which is monitored on autos
Last edited by ChickinOnaChain; May 1, 2018 at 04:09 PM.
Road Warrior
Joined: Mar 2017
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From: Santa Barbara
My 49-state 2014 VRSCF is pre-wired for the purge solenoid, but not equipped with all the gear. Figured the ECM software was 50 state and they dummied up the connector with a resistor cap, but no deal. Just checked - purge solenoid connector is open, meaning the purge function requires a different ECM software load-up for California bikes.
Last edited by Mark out West; Apr 30, 2018 at 08:10 PM.