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I have gas leaking from my exhaust manifold On my yamaha ttr 90

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How is the bike running? If you have gas leaking from the exhaust manifold I would think you have other things going on for that gas not to be burned up in the cylinder.

Is the gas coming from another source? for instance if it is leaking onto the engine, is it running down and around the engine but you only see it coming off the exhaust manifold? Gas getting burned off the engine when it is running?

Posted on May 06, 2014

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6 Suggested Answers

6ya6ya
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SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

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Posted on Jan 02, 2017

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BearWeb
  • 357 Answers

SOURCE: Yamaha 2002 TTr 250

Hi hoeygatt

Look around your bike near where the throttle cable meets the engine, when you pull the throttle, the cable pulls a quarter circle piece of metal which is connected to a spring, then connected to that should be a screw, that is the idle screw, turn it very slightly, usually clockwise to make the idle higher, and this should sort out the problem.

Please remember to rate this solution as FixYa!

Kind regards
BearWeb

Posted on Apr 12, 2009

joecoolvette
  • 5660 Answers

SOURCE: YAMAHA TTR 250 cherry red exhaust

Because the timing is off. If the timing is too advanced, or too retarded, it will make your exhaust pipe cherry red.

Posted on Jun 12, 2009

  • 3567 Answers

SOURCE: 04 Yamaha TTR 90 Difficult to Shift

Your description of the problem is classic for a bent shift fork. Call a couple dealers and get a base cost for the repairs. It would be best if you take the bike to a dealer and let them look at it to confirm my diagnosis and I think they will. A cost of $750 would not surprise me. The costly thing about changing a shift fork is that the engine comes out of the frame and then gets a complete tear down, both top end and bottom end. Now the fork can be changed out then engine / transmission re-assembly begins. This is not a recommended repair for the novice mechanic. Please rate my answer. Thanks.
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Posted on Feb 17, 2010

19ken55
  • 426 Answers

SOURCE: i need the timing marks

manual maybe look here
http://www.repairmanualclub.com/motomanuals/index.php

Posted on Feb 20, 2011

  • 78 Answers

SOURCE: need valve lash for 2003 yamaha ttr 125

valve lash on the intake .003 to .005 inch, .08 to .12 mm,exhaust .004"to.0055 inch,.10 to .14 mm (cold engine).

Posted on Feb 21, 2011

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Hi, Austin and the usual suspects are:
1. Severely discharged or a damaged battery, should have 12.5 volts or better and be able to pass a load test if necessary.
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Hi, Anonymous and the usual suspects are:
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2. Check battery terminals for damage or corrosion, check the battery cables at "BOTH" ends for loose, corroded, or broken connectors, "INSIDE" and outside the cable harness, perform connector wiggle test and check cables with an ohmmeter if necessary.
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11. Water, dirt, or rust in the fuel system.
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15. Fuel tank vent system plugged or carb vent line closed off.
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18. Carburetor controls misadjusted.
19. Incorrect valve timing.
20. Valve springs floating, weak, or broken.
21. Damaged intake or exhaust valve.
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