Engine noise - HCS Snowmobile Forums

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Old 01-15-2015, 03:26 PM   #1 (permalink)
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Default Engine noise

Just bought an 08 and it's quiet idling but giving small amounts of throttle it sound like a little desiel don't heard wot is this normal?
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Old 01-17-2015, 02:10 PM   #2 (permalink)
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Take a look at the shields under the hood to make sure they are secured, also check that the muffler has all the springs installed and that the shielding has not come loose.

If you are sure the noise is in the engine cut open your oil filter and look any bits of metal.
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Old 01-17-2015, 03:53 PM   #3 (permalink)
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Default noise

thanks just waiting for a new filter from the dealer ,shields seem good if you put a long piece of wood against the engine its got a pretty loud clicking in you ear
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Old 01-17-2015, 04:58 PM   #4 (permalink)
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These engines are so quiet that you may be hearing injector noise of the cam chain, before can get too involved can you find another FST to listen too?

There have been some rod bearings that have failed but the noise is a more of deeper knock then a click.
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Old 01-17-2015, 07:16 PM   #5 (permalink)
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Default fst

its the worst when driving and putting firm amount of throttle on
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Old 02-03-2019, 07:11 PM   #6 (permalink)
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I’m having the same issues with my 06 ! What did you find out your problem was?
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Old 02-03-2019, 08:32 PM   #7 (permalink)
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Cut your oil filter open, if you find any metal you will need to tear the engine down to find the source, unfortunately it may have spun a rod bearing. Sometimes caused by blowing a belt and overreving for a second.

If you can pull your clutch off (Be careful not to rev it up) start it and see if the noise is gone, if so you got lucky and it's just the clutch rattling.
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Old 02-05-2019, 02:22 PM   #8 (permalink)
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Rod Bearing, I spun 2 of them in my 2011.
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