Question about 2003 Yamaha WR 250 F

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What spark plug does a 98 wr250 call for? - 2003 Yamaha WR 250 F

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The stock plug is NGK BR8EG

Posted on Jul 24, 2009

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2002 Yamaha WR250 will not start


Hi, James and the usual suspects are:
1. Fuel tank empty.
2. The fuel tank has old dead gas.
3. Fuel tank bottom contaminated with ethanol sludge, dirt, water, rust, etc.
4. Fuel supply valve/petcock turned off.
5. Fouled spark plugs.
6. Engine flooded as a result of overuse of the enrichner.
7. Vacuum hose to the fuel supply valve/petcock disconnected, broken, cracked, or pinched.
8. Fuel valve/petcock or filter clogged.
9. Fuel line to carburetor or throttle body pinched, kinked or blocked.
10. Carburetor float stuck.
11. Fuel injectors clogged.
12. Fuel injectors stuck open.
13. Severely discharged or a damaged battery should have 12.5 volts or more and be able to pass a proper "LOAD" test if necessary, you may have a cursory reading of 12.5 volts or more but little or zero amperage the battery is faulty and must be replaced, AGM batteries fail in this scenario more so than lead acid batteries.
14. 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.
15. Loose or corroded wire connection at the coil or plug between ignition sensor and ECM module.
16. Spark plug cables in bad condition and shorting check for spark leakage in the dark, cable connections loose, or connected to the wrong cylinders.
17. Ignition timing incorrect due to a faulty ignition coil, ignition module or MAP, CMP, CKP, O2, TPS, ETP, IAC sensors.
18. Faulty neutral, clutch lever, or kickstand safety switch.
19. Faulty fuel pump or fuse or relay.
20. A stuck bent or burnt valve.
21. Tilt sensor needs a reset.
22. Security system not disarming alarm needs a reset.
23. Check for engine trouble codes.
For more information about your issue and valuable "FREE" downloads that you will need please click on the blue links below. Good luck and have a wonderful day.
cant get my WR250 to start
What to Do Check When Dirt Bike Won Start
YAMAHA WR250F Owner Service Manual
OEM parts for Yamaha
http://mybikemanuals.com/yamaha/yamaha-wr-owners-manuals

Jun 01, 2017 | 2003 Yamaha WR 250 F

1 Answer

2002 yamaha wr250, no spark


Hi,check fuse,check sparkplug,check the coil lead and coil,then check stater has a spark.
good luck hope you get it sorted out.

Apr 19, 2015 | Yamaha Motorcycles

1 Answer

I have a 1994 yamaha wr250 two stroke,when bike


lack of fuel ,clean filter and jets ,set float level change spark plug

Aug 26, 2014 | Motorcycles

1 Answer

My 98 ultra classic is not getting any spark/fire from my coil to my motor. I changed my coil, I tried changing my relays and still nothing. My bike is a '98 Harley Electra Glide Ultra Classic with...


Hi Anonymous, the CKP sensor needs compression to send correct signal to the ICM/ECM, make sure both spark plugs are in heads and use a grounded third plug to check for spark or hold spark plug cable close to spark plug in head. If still not getting spark the usual suspects are:
1. Fouled spark plugs.
2. Battery voltage below 8.7 volts, loose or broken battery cables especially ground cable to frame.
3. Loose connection at ignition coil or plug between ignition sensor and module.
4. Spark plug cables in bad condition, shorting / leaking, spark plug cable connections loose.
5. Faulty ignition coil or ignition / electronic module
6. Failed CKP, CMP, MAP or BAS sensor.
7. Faulty ignition switch.
For a prime suspect please visit the website below and good luck.
Harley Check Engine Lamp Diagnostics

Aug 23, 2013 | 2000 Harley Davidson FLHTCUI Electra Glide...

1 Answer

What is the spark plug gap 2005 wr250


Hi, Ken 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 zero $ you can download another one. For more information about your issue and valuable "FREE" downloads that you will need please click on the blue links below. Good luck and have a wonderful day.
YAMAHA WR250R Owner Manual Checking The Spark Plug
what is the proper spark plug gap for 2007 yamaha yz250f YAMAHA WR250F Owner Service Manual
OEM parts for Yamaha
Yamaha WR250XZ Owner Manual

Jul 14, 2012 | 2005 Yamaha WR 250 F

1 Answer

Whats the Spark plug gapping on 2001 Yamaha WR250 F?


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 zero $0 you can download another one. For more information about your issue and valuable "FREE" downloads that you will need please click on the blue links below. Good luck and have a wonderful day.
what is the proper spark plug gap for 2007 yamaha yz250f
Yamaha WR250F 2001 2002 Technical specifications
YAMAHA WR250F Owner Service Manual
OEM parts for Yamaha
YAMAHA WR250R Owner Manual

May 16, 2012 | 2003 Yamaha WR 250 F

1 Answer

2002 Yamaha WR250 Keeps fouling the spark plug. What are the possibilities and things to check? Thank you!


Hi, Lynnmcneely and the usual suspects are:
1. Fuel mixture too rich or enrichner left out too long.
2. Faulty spark plug.
3. Incorrect spark plug for the engine type or service.
4. Piston rings badly worn or broken.
5. Valve guides are badly worn and/or seals worn, crushed or have come off the valve guide and are pumping oil through it.
6. Spark plug cable weak or leaking check for spark jump in the dark.
7. Faulty ignition coil.
For more information about your issue and valuable "FREE" downloads that you will need please click on the blue links below. Good luck and have a wonderful day.
Why Does My Dirt Bike Keep Fouling Spark Plugs
YZ250F fouls plugs
YAMAHA WR250F Owner Service Manual
OEM parts for Yamaha
YAMAHA WR250R Owner Manual

Sep 29, 2010 | 2003 Yamaha WR 250 F

2 Answers

Where are the spark plugs located


the spark plugs are located on either side next to the intake manifold you will need to remove the coils to get to them

Sep 25, 2009 | 2000 Ford Expedition

2 Answers

98 Dodge 1500 problem codes indicate mulitpule misfiring


This could be your problem. If this is not it then email me at chuckie12_87@yahoo.com and I can help you to troubleshoot it a little more in depth

Jun 12, 2009 | 1998 Dodge Ram 1500 4WD

2 Answers

Were does the spark plug go on a yamha wr250


remove the fuel tak, the plug is under the rubber cap right on the top of the engine. it is quite deep down, you will need an extension on the plug spanner

Feb 11, 2009 | 2005 Yamaha WR 250 F

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