Question about 2003 Suzuki DR-Z 125 L
Last time I rode the bike it made a pop sound almost like a backfire, not locked up, drive train shifts, just wont start , and has low compression
Posted by Anonymous on
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Posted on Jan 02, 2017
backfiring means you have an air leak or a lean mixture. Look for leaks at the header pipes or perhaps a crack in the exhaust.
Cold air getting into the exhaust is usually what causes the backfire noise.
You may have a lean engine running situation but the bike would have other issues besides the backfire.
Let me know if you are having any other issues or if it just the backfire.
Posted on Jan 02, 2009
could be few probs, carbon build up on piston crown try a good cleaner fuel additive, your exaust is leaking or blowing allowing air to be sucked back in on revdown as well as you could have a inlet fault overfueling leaving to much unburnt fuel to enter your exaust, might be simple fix by just replacing the air filter and checking for burn marks around the air intake.
Posted on Jul 10, 2009
Did you sync the two carbs? If not the rear may be getting all the gas from the rear carb and none to the front. Twist throttle engine off and see if front carb cable is pulling the carb open.
Also unscrew the spark plug boot from the front spark plug wire and trim 1/8th inch off the wire and screw the boot back in. The plug wire end may be corroded on that wire.
Posted on Feb 08, 2010
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