Question about 2001 Yamaha YZ 426 F

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2001 yz 426 spark plug

How do u know if the spark plug is getting a spark?

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Remove plug then reinsert top cap only let plug hang free now kick over starter wile somone watches the plug for spark (the darker the better!)

Posted on Dec 17, 2008

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Remove the plug from the bike, put it back in its lead & hold the business end of the plug onto a metal earthed part of the bike & kick the bike over gently, if you see a small blue spark, its getting spark. Change the plug to an ngk cr8e-k its twin spark!

Posted on May 10, 2009

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Pull the spark plug from the cylinder head. Plug the spark plug back into the wire, and make sure the electrode is grounded...preferably to the cylinder head. Kick the bike over and you should see the spark. Do not hold the plug or wire at this point or you will get shocked.

Posted on May 03, 2009

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1 Answer

No spark 426f


Hi, Anonymous and the usual suspects are:
1. Fouled spark plugs.
2. Severely discharged or a damaged battery, should have 12.5 volts or better and be able to pass a load test if necessary.
3. 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.
4. Loose connection at ignition coil or plug between ignition sensor and module.
5. Spark plug cables in bad condition, shorting / leaking, spark plug cable connections loose.
6. Faulty ignition coil or electronic control module or CDI box.
7. Faulty CKP, CMP, or BAS sensor.
8. Faulty ignition switch.
9. Tilt sensor needs a reset.
10. Security alarm failing to disarm needs reset
For more information about your issue and valuable "FREE" downloads that you will need please click on the links below. Good luck and have a nice day.
00 YZ426 No Spark YZ 400 426 450
2002 yz426 spark problems
Yamaha YZ426F Owner Service Manual
OEM parts for Yamaha
Yamaha YZ450F Owner Manual Page 3

Mar 08, 2013 | 2001 Yamaha YZ 426 F

1 Answer

Yamaha yzf 426 fifth gear miss fire


Hi, Buzaa 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. 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.
3. Spark plugs in bad condition or partially fouled.
4. Spark plug cables in bad condition and leaking.
5. Spark plug gap too close or too wide.
6. Faulty ignition coil, module, and or sensor.
7. Loose, dirty, or corroded ignition module connector at crankcase.
8. Faulty CKP or CMP, MAP, ETS, ATS, TPS, O2 sensor.
9. Intake air leak.
10. Water, dirt, or rust in the fuel system, carburetor and/or filter.
11. Fuel tank vent system plugged or carburetor vent line closed off.
12. Vacuum line from intake manifold to fuel valve is broken, cracked, pinched, or missing.
13. Carburetor controls misadjusted.
14. Damaged carburetor.
15. Incorrect valve timing.
16. Weak or broken valve springs.
17. Damaged intake or exhaust valve.
For more information about your issue and valuable "FREE" downloads that you will need please click on the links below. Good luck and have nice a day.
My 2001 Yz426 wont run right please help YZ 400 426 450
few questions about my new YZF 426 YZ 400 426 450
Yamaha YZ426F Owner Service Manual
OEM parts for Yamaha
Yamaha YZ450F Owner Manual Page 3

Sep 11, 2012 | 2002 Yamaha YZ 426 F

1 Answer

Yamaha yzf 426 fifth gear miss fire


Hi, Buzaa 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. 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.
3. Spark plugs in bad condition or partially fouled.
4. Spark plug cables in bad condition and leaking.
5. Spark plug gap too close or too wide.
6. Faulty ignition coil, module, and or sensor.
7. Loose, dirty, or corroded ignition module connector at crankcase.
8. Faulty CKP or CMP, MAP, ETS, ATS, TPS, O2 sensor.
9. Intake air leak.
10. Water, dirt, or rust in the fuel system, carburetor and/or filter.
11. Fuel tank vent system plugged or carburetor vent line closed off.
12. Vacuum line from intake manifold to fuel valve is broken, cracked, pinched, or missing.
13. Carburetor controls misadjusted.
14. Damaged carburetor.
15. Incorrect valve timing.
16. Weak or broken valve springs.
17. Damaged intake or exhaust valve.
For more information about your issue and valuable "FREE" downloads that you will need please click on the links below. Good luck and have nice a day.
Yamaha YZ450F Owner Manual Page 3
OEM parts for Yamaha
Yamaha YZ426F Owner Service Manual
few questions about my new YZF 426 YZ 400 426 450
My 2001 Yz426 wont run right please help YZ 400 426 450

Sep 11, 2012 | 2002 Yamaha YZ 426 F

1 Answer

2001 yamaha yz426 spark plug gap size


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 $0 you can download another one. For more information about your issue and valuable "FREE" downloads that you will need please click on the links below. Good luck and have a nice day.
yz426 spark plug YZ 400 426 450
Spark Plug Gap
Yamaha YZ426F Owner Service Manual
OEM parts for Yamaha
Yamaha YZ450F Owner Manual Page 3

Apr 11, 2012 | 2001 Yamaha YZ 426 F

1 Answer

I have a problem with my yamaha yz 426f, i just get it from a mechanic after complete rebuild (new piston, bearings...everything in a machine) the compresion is very strong because engine didnt run even 5...


Bring it back .. work should be under warranty of some sort. Also if the engine is running but stalling due to fouled plug then maybe the oil injector is not adjusted properly or the oil/fuel mix is not right for some reason.

Dec 22, 2010 | 2001 Yamaha YZ 426 F

1 Answer

Does a 2001 yz 426 have points


No points in one of these.They have electronic pick-ups that only need to move past each other.Its not something that gives problems,Most of the time.If no spark is the problem,tell us and I am sure someone can help.Hope this helps

Dec 30, 2009 | 2002 Yamaha YZ 426 F

1 Answer

Yz 426 f no spark


your cdi box is bad

Mar 28, 2009 | 2001 Yamaha YZ 426 F

2 Answers

TROUBLE STARTING BIKE HELP


If the spark plug is not getting a spark then you will need to replace the starting coil! the bike wikk start then !...Is the engine getting fule?

Dec 17, 2008 | 2001 Yamaha YZ 426 F

3 Answers

Getting my 2001 yz 426 started


hold the decompression lever in and kick it slow then let go of the decompression lever and give it a good kick without using the decompression lever.

Nov 29, 2008 | 2001 Yamaha YZ 426 F

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