last attempt before it goes to dealership - Can-Am Commander Forum
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post #1 of 29 Old 03-31-2019, 02:51 PM Thread Starter
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last attempt before it goes to dealership

ok guys back story...2015 can am commander 800 low mileage doesn't get rode a lot...it started running rough like it had bad fuel so i was just going to run the fuel out then one day it died and now won't run at all but will crank just fine

Everything I've done so far:
fuel pump has 52 psi when i turn the key
has a good strong fuel mist coming out of fuel injectors
getting a good strong spark on spark plugs
charged battery
seems to be getting good air( I've even disconnected it to right over the engine and its sucking good and i also have good air coming out of the tail pipe)
tried starting with starter fluid( i know its not good but it was out of frustration)
replaced fuel
has no engine codes thrown

so i feel like ive covered everything that requires a engine to run and it passed all checks does anyone have any other idea of what i could check maybe some kinda sensor that would keep it from running like on atvs it has the on off switch on the handle bar?
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post #2 of 29 Old 03-31-2019, 03:14 PM
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I would definitely check for frayed or chewed wires... mice are crazy and it may of been a home to one being as it sat around a lot of its life.


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post #3 of 29 Old 03-31-2019, 03:27 PM
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Hmm... Fuel, air, spark and compression...


Did it start on ether?


I know you saw that the plugs are sparking but these things are notorious for needing plugs with your description. They're cheap and most every parts house carries them. I'd switch them just to see.

Also check and make sure your muffler screen isn't plugged.
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post #4 of 29 Old 03-31-2019, 04:12 PM
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Try cleaning map sensor with brake cleaner, make sure it is good and dry prior to start attempt. Other than that only thing I’m coming up with is it jumped time somehow. Did you do a compression test? Be sure to let us know what you find out. Good luck!

If it doesnít fit donít force it, get a bigger HAMMER
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post #5 of 29 Old 03-31-2019, 04:47 PM
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Welcome to the forum. Good luck with your issue.


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post #6 of 29 Old 03-31-2019, 08:11 PM Thread Starter
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ok thanks for the advice...tomorrow after work im going to go ahead and grab a set of spark plugs, look the wires over, and im going to pull the fuel pump and drain the fuel one more time to ensure i get every ounce out and replace with fresh fuel...i will let you know how it went so if you think of anything else send it my way i really don't want to take this thing to the dealership.
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post #7 of 29 Old 03-31-2019, 09:50 PM
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seems like you have it covered, spark, fuel ,& air, it should start & run ?!
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post #8 of 29 Old 04-04-2019, 06:01 PM
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IMO Slowindown is onto something; when I was a kid a couple of us snuck up on The Spoiled Rich Kid’s ‘69 427 El Camino and shoved a couple potatoes in the exhaust pipes...��
His daddy had it towed it to the dealership and it took them 2 days to figure out what made it quit.

Last edited by Nevadahalfrack; 04-04-2019 at 06:04 PM.
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post #9 of 29 Old 04-04-2019, 06:15 PM
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Lol.

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post #10 of 29 Old 04-05-2019, 10:23 AM
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Mine did the same thing and the exhaust screen was completely plugged up!

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