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1997 rm 125 won't start why should I do?

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For your dirt bike to run you need 3 things:

1. Fuel (gas/air)
2. Compression
3. Spark

Start trouble shooting through these. Make sure your gas is turned on, and that it flows through the carb; if you tilt the bike does fuel run through the overflow tube in the carb? Make sure you have good spark; take out the spark plug from the cylinder, still connected to the ignition wire touch the threaded end to somewhere metal on the engine and turn the bike over. You should see a spark. Finally, do you have good compression, how hard is it to kick over etc.

These are the first things to trouble shoot, I would look on youtube if you don't know what you're doing, there are plenty of helpful videos there. You can also try putting a thimble full of fuel into the cylinder and then kick it over to help it start if it has been sitting a while.

Posted on Mar 14, 2013

  • Michael Warner
    Michael Warner Mar 28, 2015

    Have a 97 Rm125 just bored it to a 134 did everything right have gas , spark, an awesome compression But wont start ... i got it all back together it started for like 10 seconds then shut off an wont start at all now

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Posted on Jan 02, 2017

  • 68 Answers

SOURCE: no spark cold on rm 125

could be stator or the coil or cdi box

Posted on May 14, 2009

  • 1206 Answers

SOURCE: have a 1992 suzuki 125 rm bike cant get it to

try changing gas . dont forget to empty out carb bowl also check for spark might have a fouled spark plug .

Posted on Jan 03, 2010

  • 32 Answers

SOURCE: How do i set the exhaust valves? rm 125

buy a manual

Posted on Mar 27, 2010

  • 3567 Answers

SOURCE: My 97' rm 125 after

The description given indicates a lean fuel / air mixture. This is usually caused by rubber seals going bad between the carb and the cylinder. Air that has not gone through the carb is mixing with the air/fuel that has gone through. First check that the two air vent hoses coming from the center of the carb fit tight. Then that the carb fittings at the front of the carb are tight and that the fitting on the cylinder is tight. If the mounts are tight the seals are leaking. Replace any gaskets, "O" ring seals and rubber manifold fittings between the carb and cylinder.

Posted on Jun 06, 2011

  • 4 Answers

SOURCE: I have a 2001 Suzuki RM 125, it won't start

hi mate i had a rm 250 with the same problem, have you done a compression test, as mine had poor compression

Posted on Jul 24, 2011

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Hi, Ben I just loaned my brand new pair of listening ears to your local dealers 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. For more information about your issue, please visit the websites below. Good luck and have nice a day.
https://www.tradebit.com/filesharing.php/search/0/1997+suzuki+rm+125

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hi fellow rider, you may want to check on the links below:

http://www.thumpertalk.com/forum/archive/index.php/t-726715.html

http://www.allthingsmoto.com/forums/f-62/rm-125-wont-start-31198/

http://answers.yahoo.com/question/index?qid=20081201165114AADfYoC

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