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What causes a rattle like sound in a yamaha XJ 650 motorcycle valve engine?

Yamaha XJ 650

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  • Master
  • 532 Answers

It could be the cam chain, the clutch basket. Or something worse. You will need to have it looked at.

Posted on Apr 05, 2015

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Posted on Jan 02, 2017

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SOURCE: valve clerance for yamaha xj 650,what is the clerance of exhuse and intake?

xj650(uk) and xj650j
inlet 0.16 - 0.20mm
exhaust 0.16 - 0.20

all other models
inlet 0.11 - 0.15mm
exhaust 0.16 - 0.20mm
set when cold

Posted on Feb 01, 2009

ollie reece
  • 1167 Answers

SOURCE: worshop manual for a 1981 Yamaha XJ 650

here you go buddy

http://www.pro-bike.ro/forums/index.php?autocom=downloads&showfile=681

Posted on Oct 12, 2009

  • 3567 Answers

SOURCE: 81 yamaha xj 650 spark plugs fire when engine

If you are saying the bike still continues to want to run, (rough running I am sure ), after the key is shut off then the engine is "dieseling". Carbon buildup on the piston / valves/ cylinder head is getting red hot from running. The hot spot(s) serve to ignite the fuel much the same as the spark plugs would. Burn only premium gas, be sure the cylinder is clean and not caked with mud or such, and change to a colder spark plug like NGK BP-8es or BP-9es ( BP-7es is the stock plug ). This may keep the engine cooler and stop the problem. The only other way is to pull the head then de-carbon it and the pistons. While the head is off, re-seat the valves using valve grinding compound. Check out Babbitts for parts. Go to www.babbittsonline.com/parts/viewbybrand/parts.aspx Please rate my answer.

Posted on Feb 25, 2010

SOURCE: 1982 yamaha xj 650, complete engine tune up

plz visit this site www.xjbikes.com

Posted on Feb 28, 2010

19ken55
  • 426 Answers

SOURCE: does anybody know the specs for the valves. for

The manual knows look here

http://www.repairmanualclub.com/motomanuals/index.php

Posted on Feb 27, 2011

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1 Answer

1981 Yamaha XJ 650 not getting gas to engine


Hi, Terry I would do a compression check first and always check the fuel flow second to isolate the problem area otherwise the usual suspects are:
1. Fuel tank empty.
2. Fuel cap or fuel tank not venting properly.
3. Fuel filter clogged with rust or dirt.
4. Fuel valve/petcock not in the on or reserve position.
5. Vacuum line to fuel valve cracked, broken, pinched, or missing*
6. Fuel valve/petcock clogged or diaphragm cracked, cut or torn*
7. Fuel line from the fuel valve to the carburetor or fuel pump clogged, cracked, pinched, bent, broken, or missing.
8. Fuel pump not working*
9. Fuel line touching cylinder or head causing fuel to boil and vapor lock, repair by rerouting and wrapping line with convoluted tubing.
10. Carburetor inlet clogged.
11. Carburetor float or needle and seat stuck.
12. Carburetor not venting properly overflow line or bowl fitting clogged, pinched, or bent.
* If equipped or applicable.
For more information about your issue and valuable "FREE" downloads that you will need for viewing or printing please click on the blue links below. Good luck and have a wonderful day.
Total Motorcycle Forums
Carburetor Issues on my 1982 xj650
Yamaha XJ650 1980 1984 Manuals service manual not owners
OEM parts for Yamaha
http://mybikemanuals.com/yamaha/yamaha-xj-owners-manuals

Oct 03, 2017 | 1981 Yamaha XJ 650

1 Answer

Xj 650 valve cover gasket leak


Hi, Anonymous for this scenario you will need your service/owners manual if you can't find the first and best tool you ever bought for your Yamaha, despair not, for a mere $0 you can download another one. For more information about your issue and valuable "FREE" downloads that you will need please click on the links below. Good luck and have a nice day.
Replacing vavle cover gasket soon what do need to know
xj 650 gasket leak MOV
Yamaha XJ750 Owners Workshop Manual
OEM parts for Yamaha
http://www.carlsalter.com/pdfs/Yamaha_XJ600SK_Owners_Manual.pdf

Nov 26, 2013 | 1980 Yamaha XJ 650

1 Answer

Lost the anti-rattle spring from front caliper cannot get one


Hi, Daddystiff for more information about your question and valuable "FREE" downloads that you will need please click on the links below. Good luck and have a nice day.
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Yamaha XJ750 Owners Workshop Manual
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http://www.carlsalter.com/pdfs/Yamaha_XJ600SK_Owners_Manual.pdf
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Jun 20, 2011 | 1981 Yamaha XJ 650

1 Answer

Hi I am doinng an oil change on my xj 650 and it has the oder of fuel in it and there seems to be to much oil drained out of the engin any idear as to the problem.


If the bike has stood for a long time, with the petrol tap in the on possition and if it has a leaky float valve, there is a possibility that fuel has leaked onto the top of an engine piston and in turn leaked through the rings into the oil.
Another reason could be miss firing over a prolonged time, causing a similar result.
Hope that helps.

Apr 22, 2011 | 1984 Yamaha XJ 650

1 Answer

Hi, my Yamaha 82 XJ 650 is not starting


Hi, Pooya44e and the usual suspects are:
1. Damaged or restricted fuel tank venting system.
2. Loose float bowl screws.
3. Damaged float bowl o-ring.
4. improper fuel level in the float bowl.
5. Worn or dirty inlet valve or seat.
6. Damaged or leaking float assembly.
7. Particle contamination in inlet fitting cavity.
For more information about your issue and valuable "FREE" downloads that you will need please click on the links below. Good luck and have nice a day.
https://groups.google.com/forum/#!topic/alt.motorcycle.sportbike/BBbw7alCAI4
Yamaha XJ750 not starting
http://www.sloneservices.com/SilverBack/Other-Stuff/V-StarShopManual99-07.pdf
OEM parts for Yamaha
https://dd5394a0b8ca8e97ba29-abf76f3d91a2125517d6c7c409f095c7.ssl.cf1.rackcdn.com/content/common/manuals/1999/LIT-11626-12-30_126.pdf

Sep 07, 2010 | 1982 Yamaha XJ 650

1 Answer

Rattle in top end


Have you adjusted the valve lash lately?
With engine COLD....
Valve Clearance Intake: 0.11 - 0.15mm ( = 0.004 - 0.006")
Valve Clearance Exhaust: 0.16 - 0.20mm (= 0.006 - 0.008")
29mm shim kits with a wide range of sizes are available from aftermarket dealers. (motion pro shim tool works great)
Also a weak valve spring will cause the valve to "float" and make a rattle noise...as well as excessive camshaft end play.
Make sure your valve train is getting proper lubrication.
Good luck....i hope this helps

May 25, 2009 | 1981 Yamaha XJ 650

2 Answers

Valve clerance for yamaha xj 650,what is the clerance of exhuse and intake?


xj650(uk) and xj650j
inlet 0.16 - 0.20mm
exhaust 0.16 - 0.20

all other models
inlet 0.11 - 0.15mm
exhaust 0.16 - 0.20mm
set when cold

Dec 23, 2008 | 1982 Yamaha XJ 650

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