From the threads I linked below, it appears there must be some variation in evaporative emissions systems of various years of ZX-14. I’ve read that the evap consisted of a canister and a separator under the seat. My 24 has only the canister in the RH side fairing along with a hose marked with blue tape. The canister has another hose which has green tape.

My fuel tank is just like the Gen1 with one nipple at the back, bottom on
the left with blue tape and one nipple at the back, bottom on the right that exits below the LH foot peg and has brown tape.

The blue hose comes off of a nipple at the RH back of the fuel tank. This must be the fuel tank overflow and vent, the blue hose routes under the fuel tank, around the RH side of the top of the engine, over the ram air tube and down to the canister in the fairing. The green hose comes from the canister, over the ram air tube and into the purge valve that is fastened to the RH fairing hanger bracket. A second green tube comes out of the purge valve and goes directly to a nipple on the throttle bodies #4 bore.

This is how I assume this thing works: liquid gasoline overflow and vapors are released from the nipple at the RH back of the fuel tank. These travel up the blue hose where they are deposited in the canister in the RH fairing. If the canister becomes full enough that the evaporative emissions are forced up the green hose to the purge valve, the purge valve opens and vacuum from throttle bodies #4 draws the evaporated/overflowed fuel to cylinder #4. The evaporated/overflowed fuel is burned in the engine.

Simply put, the blue hose from the gas tank is the overflow/vent that emptied on the ground behind the LH foot peg on my Gen1. The green hose, canister and purge valve are what were put in place so the waste fuel and vapor would get burned. Sound about right?

https://zx14ninjaforum.com/messages.cfm?threadid=52A358A9-1372-66AE-3BA6B5CA798EA415

https://zx14ninjaforum.com/messages.cfm?threadid=B971EE14-D56B-84E2-1ED00B6874E4231E

https://zx14ninjaforum.com/messages.cfm?threadid=3C692B10-05D3-0D9B-8BF360604A055F1C

https://zx14ninjaforum.com/messages.cfm?threadid=F50E89FC-1372-66AE-3B015EB5E9721838

https://www.bikeland.org/board/viewthread.php?FID=27&TID=43208

pissear was on that last one.

Watch the thread please, I already have more questions. mainly I’d just like to know if my understanding of the evap on the 2024 sounds accurate to you. I’ll be going farther with this. Ultimate goal is to delete as much as the evap as possible.

3 nipples out of the back of the tank is the one is a weather drain between the gas tank and gas cap. The remaining 2 are the overflow of gas topped off, and the last one is for tank venting at the edge of the gas tank to the gas cap's covering.

Next time you have the gas cap lifted, note a little nipple protrusion at the bottom of the gas cap. Slowly close the cap and follow the hole at the tank the nipple sides into.

One hose catches the fluid, the other hose is the tank's vent into the bottom of the separator. The 3rd hose hooks into the separator. Then one out hose from the separator goes into the canister. Canister's hose goes up to one of the cylinders, the other hose from the bottom of the separator hooks to another injector's intake.

Canister turn the liquid into a vapor, or if send via liquid, it would puddle and not flow being sucked only once out of 4 times total.

Does an evap system lose or gain HP if not hooked in this closed loop system? Oh fuck no! It's laced in thin air and only if wet at the canister does it a tiny whiff of added fuel to one cylinder. Get it?