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My 1994 VMax is making a noise when I rev the engine. Thought it was the timing chain, adjusted the tension, but still making the noise. Does not sound like a bearing. It does sound like pebbles in a tin can though.

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  • Yamaha Master
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Hi, Sldiam I would love to help you with your engine or chassis noise but I just loaned my brand new pair of listening ears to your local dealer's chief technician so he could take your bike for a test ride and give you his professional opinion and estimate about your noise and repair cost. If you are a little short on "DRACHMA" and a Dealership is not on your list of fun places to visit then perhaps the list below will help soothe your worried mind so you can make an informed decision.
1. Bearings---SCREECH
2. Belts---CHIRP
3. Brake Rotors---BUZZ
4. Chains---RATTLE
5. Clutches---CHATTER
6. Cylinders---PING
7. Fairing Panels---WHISTLE
8. Fronk Forks---Plunk
9. Gears---WHINE
10. Head Gasket---HISS
11. Hydraulic Lifters---TAP
12. Pistons---SLAP
13. Rear Shocks---SQUEAK
14. Shifting Trans---CLUNK
15. Solid Lifters---TICK
16. Starters---CLICK
17. Connecting Rods Go---KNOCK-KNOCK---who's there, it's me "*****"
For more information about your issue and valuable "FREE" downloads that you will need please click on the blue links below. Good luck and have a wonderful day.
Top 6 Strange Motorcycle Noises What They May Mean
How to diagnose problem by the noises your bike makes
http://www.vmaxoutlaw.com/tech/VMX12-Service-Manual.pdf
OEM parts for Yamaha
http://www.vmaxoutlaw.com/tech/owners_manual.pdf

Posted on May 31, 2017

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Posted on Jan 02, 2017

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  • 188 Answers

SOURCE: CAMCHAIN NOISE

need tohave your valves ajusted. intake valves should be about 5-thousnds, and exhasut should be about 7-thousands. be in all, the slite tap you are hearing will not hurt anything. Sometimes times a little lose is good to keep from bending a valve.

Posted on Jan 31, 2009

cape cod bob
  • 292 Answers

SOURCE: timing chain tensioner adjustment

all v twin engines are noisy, if you could totally silence the exhaust noise, you would be horrified how awful the motor sounds, it could probably do with the cam chain tensioner ADJUSTING. i wouldn't think it would need replacing. unfortunately the manual only recomends this being done by a qualified tech, i have a xvs 650 with same trouble. i would adjust myself if i could find out the correct tollerences.

Posted on Mar 27, 2009

  • 208 Answers

SOURCE: 1998 yamaha grizzly engine noise

you may have a collapsed lifter

Posted on Jun 21, 2009

  • 1 Answer

SOURCE: A rattling noise coming from the engine.

Could be your Flywheel,The yz426 has a riveted flywheel,over time these rivets wear from the flywheel spinning around,causing a "rattling sound"or it may be your timing chain is loose or has been stretched.

Posted on Jul 02, 2009

ckoira57
  • 267 Answers

SOURCE: Need to change timing chain

http://www.cmsnl.com/yamaha-xs400k-maxim-1983_model8929/partslist/A-10.html

Link has all the schematics for all sections, links to specifications as well...good luck and Cheers!

Posted on Sep 04, 2010

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Chains making sounds in motor Cylinders something.. Plug or wire?? Didn't tune it up after rebuilding engine Any thoughts; remedies?


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NOISE DURING START UP - INSTALL REVISED TIMING CHAIN TENSIONERS:
Some vehicles within the above VIN range may experience a rattling noise when the engine is started. This noise may be caused by the secondary timing chain tensioners. Research has shown that a noise can originate at the chain tensioners to cause a resonance in another part of the engine.
A revised, spring assisted, secondary timing chain tensioner has been introduced to eliminate this concern, commencing at engine No. 98102106XX. Introductory VINs are not yet available. In case of a customer complaint, the revised tensioners may be installed on earlier V8 engines.
But then again, I'm not sure exactly of your model, if you get back to me with the exact model, I can check for any TSB/Recalls for you :)

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Thanks
RSRBOB

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