canam engine clatter / knock - Can-Am DS-450 Forum :: DS450HQ.com
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post #1 of 36 (permalink) Old 07-17-2014, 05:02 PM Thread Starter
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canam engine clatter / knock

Engine clatter / knock. Anyone have any ideas?

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post #2 of 36 (permalink) Old 07-17-2014, 05:29 PM
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decompression lever bouncing about, or valve train because the chain tensioner works off of oil pressure. you can take the tensioner out and try moving it by hand I had one stick halfway once.

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post #3 of 36 (permalink) Old 07-17-2014, 11:00 PM Thread Starter
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how can i take the valve cover off without removing the engine?

I removed the left hand cross member but i can not get the valve cover out of the way.
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post #4 of 36 (permalink) Old 07-17-2014, 11:00 PM Thread Starter
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checked the cam chain tensioner. thats not the issue.
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post #5 of 36 (permalink) Old 07-18-2014, 12:14 AM
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how can i take the valve cover off without removing the engine?

I removed the left hand cross member but i can not get the valve cover out of the way.
I removed the left frame rail, overflow tank, then moved all wires/hoses out of the way.... Spent 75% of the time snaking the valve cover out of the frame. The trick that worked for me was leaning the cover towards the gas tank as I pulled it out of the left side so it could get over the timing gears.

Also don't forget to lock your motor at TDC before you play with anything under the cover. I learned that the hard way.... Good luck!

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post #6 of 36 (permalink) Old 07-18-2014, 12:20 AM Thread Starter
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yea, i removed the left frame rail. I moved the wiring harness and the res tank. i still cant seem to get the cover off.
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post #7 of 36 (permalink) Old 07-18-2014, 10:17 AM
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yea, i removed the left frame rail. I moved the wiring harness and the res tank. i still cant seem to get the cover off.
You have to move it little by little out of the left side of the frame. Like I said I leaned the valve cover forwards against the gas tank as much as possible to get it out. Took me over an hour the first time.
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post #8 of 36 (permalink) Old 07-18-2014, 10:57 AM
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Lift the cover while rotating the front down and rear up and kind of rolling it down and to the left. First time can be a pain and an extra set of hands holding wires and stuff up out of the way will help. It's tight but it will come off. Luckily it goes on easier than off!

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post #9 of 36 (permalink) Old 08-05-2014, 07:36 AM Thread Starter
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Thanks. I've been working non stop since I state ted to tear it down. I have a few days off this week, so I'm going to give it another try.
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post #10 of 36 (permalink) Old 08-06-2014, 08:59 PM Thread Starter
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Took the cover off. Valves are within specs. What should I do now?
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