Hi everyone, I am having an issue that is getting really annoying and I am unable to locate the problem. I am really hoping someone in this community can help!! I have a 2015 Can Am Commander 1000 XTP. It currently has little over 16000KM of pretty much flawless miles and I love the machine. A little while ago upon starting my machine and idling to warm up, I heard a change in note and the engine was obviously running rough and on one cylinder. It went into limp mode and provided a engine misfire code P0301 indicating it was cylinder number 1. I initially just turned it off and upon restarting it worked fine and code was gone. Thought it was a one off... a week later same issue which was again resolved by just shutting off and restarting and the rest of the day was fine. It continued to do this and became a little worse over time doing it every cold startup and disappearing when engine was warm. I was preparing machine for a long trip and had dealer complete a few maintenance items including changing the spark plugs believing one may have been fouled a little causing the issue. The plugs with 15000km on them were in great shape and probably didn't need to be changed. The issue didn't happen at first at the dealer but before I took it they did finally see the issue and while hooked up to computer verified it was misfiring. They felt it might be a dirty injector and suggested I try some cleaner in my fuel. So I was beginning a 1200km 7 day trip and during same I used the best fuel I could find and did use a injector treatment (seafoam). The issue seemed a little better at first however it was still present. By the end of the trip however even with engine warm when I let it idle it would go into a misfire and limp mode. Re-starting still resets it and if I get on the gas I can still go all day!
So I decided its time to fix this for good... I tore everything down and first took out both injectors and the cylinder #1 injector did look a little dirty so I thought bingo... To be sure I cleaned them and swapped them so if issue was the injector it should now be cylinder 2. Nope still have problem and its still number 1. So Injectors crossed off list. Next thinking coil. I swapped out coil from identical commander (friends) and still no change. Swapped out coil wire to #1 still no change so not coil or wires. Had a fuel pump pressure gauge and checked pressure. Seems perfect with the pressure holding strong even when the engine dying down with misfire and not to mention issue never changed to any other cylinder except #1 so I am confident that fuel pump is ok. Next I am going to have a look at the air intake with throttle body etc as I did notice it was a little more dirty then I would like when I removed the injectors and could see behind towards the air filter. Thought about valve issues maybe but there is no sound and with the plugs being in great shape think they are ok?? After I try everything else I can I will get dealer to look valves over if necessary.
So question......... anyone out there have anything similar or any suggestions for me. Very annoying problem that needs to be resolved.
Thanks
Bruce
So I decided its time to fix this for good... I tore everything down and first took out both injectors and the cylinder #1 injector did look a little dirty so I thought bingo... To be sure I cleaned them and swapped them so if issue was the injector it should now be cylinder 2. Nope still have problem and its still number 1. So Injectors crossed off list. Next thinking coil. I swapped out coil from identical commander (friends) and still no change. Swapped out coil wire to #1 still no change so not coil or wires. Had a fuel pump pressure gauge and checked pressure. Seems perfect with the pressure holding strong even when the engine dying down with misfire and not to mention issue never changed to any other cylinder except #1 so I am confident that fuel pump is ok. Next I am going to have a look at the air intake with throttle body etc as I did notice it was a little more dirty then I would like when I removed the injectors and could see behind towards the air filter. Thought about valve issues maybe but there is no sound and with the plugs being in great shape think they are ok?? After I try everything else I can I will get dealer to look valves over if necessary.
So question......... anyone out there have anything similar or any suggestions for me. Very annoying problem that needs to be resolved.
Thanks
Bruce