Question about 2005 Yamaha WR 250 F

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Were does the spark plug go on a yamha wr250

New 2 bikes iv got a yamaha wr250 an need 2 no were the spark plug is changed

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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

Posted on Feb 11, 2009

  • gert potgieter Aug 11, 2013

    replase sparkplug stil dont want to idle

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Don't forget it is a 5/8 socket

Posted on Jun 02, 2009

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1 Answer

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.
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What to Do Check When Dirt Bike Won Start
YAMAHA WR250F Owner Service Manual
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http://mybikemanuals.com/yamaha/yamaha-wr-owners-manuals

Jun 01, 2017 | 2003 Yamaha WR 250 F

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

How can i improve the performance of yamaha AG200 which has travelled 8900km trouble areas shock obsorbers and the engine


AG bikes are not designed for performance. If the bike is working as intended by Yamaha, then it is for farm use only. If the suspension is leaking oil or become 'springy' then new fork seals and a back shock replacement or rebuild may be needed. If you want the engine to go faster then you need to seriously look at buying another bike because the AG200 is not designed to go 'fast'. If you are after a trial bike you might want to look at Honda CRF250L, XR250/400, Yamaha XT or TTR250, TT350, Kawaski KLX range. Enduro bikes: Yamaha WRF250/450, Honda CRF250X/450X, Suzuki DRZ400, RMX250, Kawasaki KDX200 (2 strokes are easier and cheaper to rebuild) so my choice would be RMX, KDX, DT200, Husky WR250/300, KTM300 - these are cheap 2nd hand too! Don't buy a bike that is way out of your ability range. Ride on!

Jan 08, 2013 | 2007 Yamaha AG 200 E

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.
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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.
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May 16, 2012 | 2003 Yamaha WR 250 F

1 Answer

Only one cylinder is firing 2000 yamha v star 650


Hi, John you need "FIVE" things in order for a cylinder to run properly:
1. FUEL: in order to validate your not getting fuel spray some starting fluid into the air cleaner and hit the starter button, if it fires up and runs for a few seconds then you know you have a fuel delivery issue.
2. SPARK: remove the spark plug and with it connected to the spark plug cable ground the threads to something metal you should see a bluish white spark if not you have a faulty spark plug, spark plug cable, ignition coil, condenser, CKP, ECM, sensor or the wiring in between.
3. COMPRESSION: you must have at least 80-100 PSI for most bikes if not perform a leak down test you may have a burnt or bent valve or hole in the piston or broken rings.
4. CAM TIMING: confirm your timing marks are aligned to see if the cam chain or adjuster are worn out and the chain has skipped a couple teeth.
5. IGNITION TIMING: on older bikes check to see if your points have not closed up, timing plate has not become loose and confirm with a timing light for proper retard and advance functions, on newer bikes where timing is controlled by an ECM and is nonadjustable check you CKP, TPS, MAP, O2, sensor or it's counterpart for integrity.
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.
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Oct 06, 2011 | Yamaha V Star Classic 650 Motorcycles

1 Answer

My bike is cranking over but wont start.. iv put a new spark plug and checked for spark.. cleaned the carb.. im getting fuel. checked all my wiring all is good..


have you checked that you have compression? remove the spark plug and put you finger over the hole and try starting the bike your finger should be pulled into the hole
and how old is the fuel? it starts to break down after a few months

hope this helps

John

May 23, 2011 | 2003 Yamaha TT-R 250

2 Answers

When i got the bike it wasnt running .it had no coils ,no plugs .iv bought new ones and need to know what lead goes were from waht coil .


The coil for the #1/4 spark plugs is mounted on the left side of the bike, and has the solid orange (ground) wire and the red-with-white-tracer-stripe (hot) wire input leading to it.

The coil for the #2/3 spark plugs is mounted on the right side of the bike, and has the solid grey (ground) wire and the red-with-white-tracer-stripe (hot) wire input leading to it.

Mar 23, 2011 | Yamaha XJ 900 F Motorcycles

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.
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YZ250F fouls plugs
YAMAHA WR250F Owner Service Manual
OEM parts for Yamaha
YAMAHA WR250R Owner Manual

Sep 29, 2010 | 2003 Yamaha WR 250 F

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