Hello I'm new to this I tried googling pictures but can't find anything. I have a 2014 is250 that's throwing p0302, p0306, p0441, p0455, and p0456 which are cylinder 2 and 6 misfire codes and evap codes.My car is misfiring I changed the spark plugs (oem denso plugs) 6 months ago and the car was driving good till about a week ago it started misfiring when I hit around 50 mph and then it has no power but before that it'll run good then after it wont really want to shift also the rpms jump around a bit when I start it. I first thought maybe I should also change the coil packs since my car has 150k miles I bought new oem coil packs and installed them problem didn't go away. I tried switching the plugs to different cylinders to see if the misfire would change cylinders and nothing. So now I'm thinking it's misfiring from the evap codes idk if thats possible im honestly just a youtube mechanic. I've known of this hose that comes off the vacuum switch that leads to nowhere since I first got the car, but ignored it since I can't figure out where the other end plugs into. Can someone please help me I really don't wanna take it to the dealership. Could that be my problem?

 

It looks like your evap hose is disconnected the one under the intake pipe.

It should be in this vicinity.

 

I ended up figuring it out the part where it was supposed to connect was broken that's why I couldn't see anything near by, I guess it got caught on something and ripped a piece off from the previous owner. I appreciate the reply I connected it with a longer piece of vacumn hose and changed the spark plug on the cylinder that was misfiring and it's good now I still have the check engine light on though I guess I have another vacumn leak somewhere

 

So is the light on still for misfires, or Evap?

 

for evap I don't know what it could be I I've looked at for a while and can't find anything disconnected any ideas?

 

While the engine is on disconnect the wire harness. Then remove the same hose mentioned off the nipple at the purge valve.

That being said there should be no vacuum on that port. Place your finger on the port if it has suction. The purge valve is no good, or it's not closing.

While the car is idle do the RPM's fluctuate up and down slightly?

 

Ok cool I will try that when i get off of work. No the rpms are good they dont jump around

 

Sounds like it's good then, but check anyways. Also make sure your gas cap is on good. Normally you should hear a click. Then check the o-ring on the cap for tears. Those are just things that come to mind.

 

damn I wonder if it's the gas cap then i checked the o ring and it looked good but it doesn't click when I turn it all the way. I will update you I appreciate the help