Guys I have a 2020 cforce 500 little over 500 miles on it. My o2 sensor wire fell down onto the exhaust melted, when it melted it ruined the o2 sensor and the computer so I replaced both. Took it to a dealer they said it's the throttle body but a new one it'll fix the issue. Bought a new throttle body, didn't fix the issue, they then said it's the wiring harness, bought a new wiring harness still nothing. I then was told the idle air control replaced it still nothing. So far the computer, throttle body, wiring harness, idle control valve all have been replaced. The bike is running super rich, spark plugs are black really wet a lot of smoke coming from exhaust. I'm at a loss - the only code it's throwing is for the evap which I deleted when I bought it. The bike will not idle correctly, and if you give it any throttle it'll try really hard to rev up but then act like it's hitting the limiter. The dealerships around me are horrible so I'm left to fix it myself.

One thing to note - if I unplug the fuel pump it'll rev up like it's suppose to, plug it back in and it struggles.

I have a new injector & fuel pump on order. If those don't fix it I'm setting it on fire (jk) I just want my bike back! HELP idk which way to turn or even go any help would be appreciated

[2015 Z Force 800 53/Trail EPS]

I hate it when they tell you to throw parts at it like that when these things are not that complicated. Normally I would say it's either the sensor or the ECU but you say they have been replaced. Yet it still runs rich enough to smoke like fuel is being dumped in it..and it gets better once the fuel pump pressure is pulled down with it unplugged. That says you have one very stuck-open injector as there is no other way it would get that much fuel. Pull it, leave it plugged in and the rail attached and turn the key on. Don't try and start it. If it sprays fuel...it's stuck and a new one should fix it. As to why this happened is anyone's guess. I suspect there is more to this story cause even CFM brackets they harnesses well enough not to just "fall" onto exhaust pipes. If the injector doesn't spray, roll it over and watch it. It should pulse a little spray on every intake stroke. If so, check the valve timing and take a compression test cause something else is wrong. Also check the battery voltage, the power may be low to the system and coil.

So the wire for the o2 on my bike is suppose to have 2 straps that you twist very horrible design. The o2 wire is maybe 3" at max from the exhaust - once I finally got my side plastics off and gas tank 1/2 of the straps wasn't there. The dealership should ultimately check these machines over prior to buying, however, I've seen multiple incidents of the bikes being sent out with missing/loose parts.

[2015 Z Force 800 53/Trail EPS]

So the wire for the o2 on my bike is suppose to have 2 straps that you twist very horrible design. The o2 wire is maybe 3" at max from the exhaust - once I finally got my side plastics off and gas tank 1/2 of the straps wasn't there. The dealership should ultimately check these machines over prior to buying, however, I've seen multiple incidents of the bikes being sent out with missing/loose parts.

Yeah that is unfortunately common for CFM. Loose or missing items that is.

Hey NM what scan tool works on these machines? I just got the hard back service manual today, but to do much of the testing I need a scan tool.

[2015 Z Force 800 53/Trail EPS]

Hey NM what scan tool works on these machines? I just got the hard back service manual today, but to do much of the testing I need a scan tool.

I couldn't tell you. On the old ones they had their own. On the new ones they were supposed to have gone to the OBD2 but people say that doesn't fit or work. Others say they have made adapters to use their scanners. So confusing. The manual should have theirs in it in special tools. They also say the new ones display the error code on the screen...which they do...if something's wrong that can be detected.

The  ob11 scanner that i used at work on cars works on my 2019 cf moto 600t.

Guys I had the hardest time finding a scanner that would read these machines so I saved my lunch money and bought a semi good one off of Amazon fairly cheap considering.