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Old 07-16-2006, 11:03 PM   #1 (permalink)
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Well I went for a ride today and and kept hearing noise from the engine. This quad only hae about 6-7 hours on it. I did add a full length skid plate, so I guess it could be reflected engine noise. But it sounded more like it was from the top end. I just changed the oil the night before the ride. When I rode it before I noticed some engine noise. it sounded louder than before. Is this normal with the YFZ? My predator sounded like a coffee grinder, but ran fine. I also hear what sound like a vibration at higher rpms. Still under warrenty of course, should I take it in to the dealer?
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Old 07-16-2006, 11:10 PM   #2 (permalink)
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its hard to say, without hearing it in person but you could check to see if the oil filter has any filings in it, what oil did you put in?

just for reference a skid plate will resonate any engine noise and could even vibrate against the frame...that will make noise

take off the skid plate and have another listen
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Old 07-16-2006, 11:17 PM   #3 (permalink)
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Quote:
Originally posted by YFZ450 #69@Jul 16 2006, 08:10 PM
its hard to say, without hearing it in person but you could check to see if the oil filter has any filings in it, what oil did you put in?

just for reference a skid plate will resonate any engine noise and could even vibrate against the frame...that will make noise

take off the skid plate and have another listen
[snapback]455482[/snapback]
I put in golden spectra oil. I thought it needed at least another oil change to break in before I switch to synthetic.
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Old 07-16-2006, 11:25 PM   #4 (permalink)
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thats not a bad line of thought

do you know what viscocity? such as 10W-30, 10W-50?

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Old 07-16-2006, 11:34 PM   #5 (permalink)
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If you take the skid off and the noise is still there, then make sure the filter is in the right way.

If you do all that and still hear it, take it back. You will not be charged anything.
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Old 07-23-2007, 09:46 AM   #6 (permalink)
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Quote:
If you take the skid off and the noise is still there, then make sure the filter is in the right way.

If you do all that and still hear it, take it back. You will not be charged anything.[/b]
Can this cause a ticking in the top end?
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Old 07-23-2007, 02:59 PM   #7 (permalink)
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If you take it to the dealer and tell you something's wrong with something, don't believe them unless you see it yourself, tell them to show you the parts that are supossively bad, they're always going to try and fruck you over
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Old 07-23-2007, 04:22 PM   #8 (permalink)
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Quote:
Can this cause a ticking in the top end?[/b]

Not directly, but from lack of oil then the valves could "tick".
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