| Author |
Message |
    
Towpro
| | Posted on Monday, May 24, 2010 - 02:28 pm: | 
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I just adjusted my chain Saturday (5000 miles). I only tightened it around 1/4 turn. I feel less vibration while slowing down and coming to a stop. I also put amsoil in both ends at the same time but I don't think oil can change vibration levels. |
Jespo_m2
| | Posted on Monday, May 24, 2010 - 02:58 pm: |
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Check the spark plugs.
Dirty/fowled spark plugs can cause these motors to vibrate terribly. |
Metaldude
| | Posted on Monday, May 24, 2010 - 03:00 pm: |
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Something must be wrong with the engine for the isolator to fail like that. The ripping is just a symptom of another issue. Something is causing the vibrations which caused the isolator to rip (not the other way around). That's a pretty serious rip in a pretty tough piece of rubber - and only after 5000 miles.
Can you snug up the primary chain a bit and let us know if that helps?
I just hope you're vibrations aren't caused by the same problem I had which was a bent connecting rod. We ended up ripping the engine down and found that the front piston was beating the heck out of the front cylinder wall. The back of the cylinder was in perfect shape. In my case the cause of the vibration was a bent con rod. What caused the rod to bend? Dunno...
I found using an automotive stethoscope very valuable in tracing down the point where the vibrations were coming from. In my case, it was localized to the two header bolts for the isolator. I too replaced mine to no avail... A stethoscope to your primary may help you rule that system out or in. |
Rkc00
| | Posted on Monday, May 24, 2010 - 03:41 pm: |
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Metaldude,
I am with you 100% on this. I agree the ripping is a symptom of another issue. |
Conchop
| | Posted on Monday, May 24, 2010 - 04:23 pm: |
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I'm running NGK irridium's - It shouldn't be a problem but then again, it could be. Any idea's on who has the ultimate spark plug and the correct number??? |
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