Question about 2008 Yamaha WR250R

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Fuel injection issue

The engine will stall occasionally.

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Hi, Andin 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.
2. Failed alternator/generator and or voltage regulator.
3. Loose or corroded battery terminals and or cables especially the "NEGATIVE" cable, look for loose, corroded, or broken connectors inside the cable harness at "BOTH" ends.
4. Failed main circuit breaker or ignition switch, check for loose connections and continuity.
5. Failed system and or ignition relay, check for continuity.
6. Failed ignition coil, ignition/electronic module.
7. Failed CKP, CPS, CMP, MAP, TPS, or BAS sensor, corroded, loose or broken wire connector pins/sockets.
8. Throttle cables and or idle speed improperly adjusted hot idle speed should be 950 RPM to 1000 RPM.
9. Fuel tank empty
10. Water or dirt in the fuel system, or clogged filter.
11. Restricted, blocked or kinked fuel line.
12. Failed fuel pump.
13. Failed pressure regulator.
14. Faulty or clogged fuel injectors.
For more information about your issue and valuable "FREE" downloads that you need please click on the links below. Good luck and have a nice day.
Stalling issues
Problems with wr250x
YAMAHA WR250F Owner Service Manual
OEM parts for Yamaha
Yamaha 2008 WR250X Owner Manual

Posted on Dec 02, 2016


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Posted on Jan 02, 2017

cape cod bob
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SOURCE: engine dies after 20 minutes of running.

try some Berrymans B12 fuel additive in the tank. if your bike has been in storage it could be gummed up a bit. put in a little more than stated dose, no more than double, run it let it get hot and then let it stand overnight. it worked for me on my v star

Posted on Mar 31, 2009

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