Hawk DLX EFI Evap Vacuum Lines Reversed - What if?

Do©Hawk · 07-10-2024, 07:45 PM

My Hawk has always had a bit of a stutter occasionally. It's kind of unpredictable. Today I decided to pull the tank and explore a little. While I was in there, I pulled the sensors from the throttle body, cleaned them and dielectric greased the connectors. I also found a vacuum line from the Evap canister to the throttle body that was kinked against the frame due to the angle of the throttle body. It wasn't long enough to route a different way so I reversed the hose ends so the kink crease was in a less kinky spot. At this moment I realized I had 2 hoses for the Evap canister, 1 from the tank and 1 from the throttle body and I didn't take note of which hose went to which nipple. I took my best guess and put it back together.

The Hawk took a little bit of turning before coming back to life and stalled once, but then ran ok. I took it for a ride and it seems to be no worse than before I started.

Would the engine run poorly or throw codes if I reversed the hoses on the Evap system? Would it be immediately noticeable or a slowly developing problem if it is a problem?

It's running seemingly normal. Should I just not worry about it?

07-10-2024, 07:45 PM	#1
Do©Hawk Join Date: Oct 2023 Location: Western PA Posts: 245	Hawk DLX EFI Evap Vacuum Lines Reversed - What if? My Hawk has always had a bit of a stutter occasionally. It's kind of unpredictable. Today I decided to pull the tank and explore a little. While I was in there, I pulled the sensors from the throttle body, cleaned them and dielectric greased the connectors. I also found a vacuum line from the Evap canister to the throttle body that was kinked against the frame due to the angle of the throttle body. It wasn't long enough to route a different way so I reversed the hose ends so the kink crease was in a less kinky spot. At this moment I realized I had 2 hoses for the Evap canister, 1 from the tank and 1 from the throttle body and I didn't take note of which hose went to which nipple. I took my best guess and put it back together. The Hawk took a little bit of turning before coming back to life and stalled once, but then ran ok. I took it for a ride and it seems to be no worse than before I started. Would the engine run poorly or throw codes if I reversed the hoses on the Evap system? Would it be immediately noticeable or a slowly developing problem if it is a problem? It's running seemingly normal. Should I just not worry about it? __________________ 2022 Hawk DLX EFI * 17T Front / 47T Rear / upgraded chain * Kenda K-760 front + rear * Banjo brake light switch * LED headlight + front turn signals * Debadged (I don't like to brag about the superior strength!) * Top speed, GPS verified, as equipped: 68 mph (so far)
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