Question about 2009 Suzuki RMZ450

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Hello . 2009 rmz 450 no fire. Was on 4th race of the day when loss power engine poped, spit and died. will not start. No spark complete rebuild of engine 2 weeks prior.Crank,piston,cylinder, Bike was working great. 3 practice 2 prior weekends of riding. Just stopped out of the blue. While racing rider went down. bike stalled. re fired and ran 3 laps then quit. Sandy track check all contections for sand dirt etc. tryed new plug check flywheel and pick up all aok. What should we do next? Greg.

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  • Suzuki Master
  • 40,843 Answers

Hi, Greg did you know your first name is better than your Thumper? and the usual suspects are:
1. Fouled spark plugs.
2. 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 preliminary 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.
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 check for spark leakage in the dark.
6. Faulty ignition coil or electronic control module.
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 blue links below. Good luck and have a wonderful day.
09 problem please help save me some
How to fix No Spark Problem on Motorcycles and Dirt Bikes
Suzuki RM z450 Owner Service Manual
OEM parts for Suzuki
http://mybikemanuals.com/suzuki

Posted on May 20, 2017

6 Suggested Answers

6ya6ya
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Posted on Jan 02, 2017

  • 69 Answers

SOURCE: 05 katana 600f no spark!

sounds as if you have an issue with the charging system, try using a volt meter to determine if the bike is charging. To do so you will need to access the battery under the seat, with the bike running hook up the volt meter to the battery terminals, at idle you should have around 11volts when reving you should have around 13volts. If not you may have a bad stator or other electrical issues. good luck

Posted on Mar 29, 2009

Benimur
  • 6966 Answers

SOURCE: 1979 suski 750,bike runs on 2 left side cylinders,

Hi and welcome to FixYa,

With the indulgence of craigjamesbt...

A few additional ideas to consider:

  • it would be an electrical/ignition issue if 1 & 4 or 2 & 3 will not fire but not 3 & 4;
  • almost always, raw fuel on exhaust indicates a flooded engine. A flooded engine would most likely be a carb issue;
  • best way to determine if it is an engine concern is to do a compression test;
  • a way to test the right carb pair is to deliberately starve them of fuel by temporarily plugging/blocking the inlet port/seat with rubber similar in appearance as to those used for glue gun, not installing the needle and float. Assemble the carb and install. Start the bike and use/spray carb cleaner on the right side carb. Note if 3 & 4 will fire even intermittently.
Would appreciate a postback on results/updates on any developments.

Good luck and thank you for using FixYa.

Posted on Apr 27, 2009

roadrunning1
  • 152 Answers

SOURCE: How often to replace valves and such?

Depending on how hard you ride that will determine the time , I've known of some racing buddies of mine that a total rebuild is sometimes the case,Your manual will give you some indication but the best indication is your judgement on how hard you are going to ride it.

Posted on May 11, 2009

2giddyup
  • 4 Answers

SOURCE: I have an 04 RMZ 250 I just re-shimmed the valves

sounds like maybe valves were shimmed too tight,check service manual for clearances...better a little loose than too tight,can cause alot of damage to cam & head,be careful!!

Posted on Oct 19, 2009

  • 89 Answers

SOURCE: My #1 and #2 cylinders are not firing. I have

Are the plugs sparking. Short them out to the engine while cranking engine to see spark at electrode. If they are not are you getting power to the coils. If they are sparking do they get wet when they are in place in the engine and it is run. Run it for a minute and remove plugs to check. If they are dry you may have a carb problem. If they are wet check the compression on the engine cylinders you may have blown the head gasket between no 1 and no 2 cylinders.

Posted on Feb 05, 2010

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My 2004 rmz 250 4 stroke lost power died went to kick it over and it locked up what causes that?


Hi, William you may have hydraulic lock caused by excessive liquid in the cylinder or you have squeaked your top end this is commonly known as "HEAT SEIZE" the piston heats up expands and becomes extremely tight in the cylinder bore and usually occurs mainly on 2 cycle engines right after a fresh top end rebuild, but it can also happen to brand new motorcycles, these are rare instances due to better quality control and education. Overheating failures that cause pistons to seize are many and each one should be carefully diagnosed to prevent future repeat offenders and the usual suspects are:
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3. Wrong type of oil used in premix or oil tank.
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6. Failure to follow proper break in procedures with a 16:1 premix ratio.
7. Loose fasteners causing intake, base, or head gaskets to leak or blown crankshaft seal, failure caused by age, overheating or walking. 8. Holes in the intake manifold bent or warped intake flange or reed cage any stray air coming into a cylinder will cause a super lean condition.
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16. Failure to bleed oil pump after a rebuild/replacement or running oil tank dry.
17. Engine coolant level too low, too old, or improper mixture ratio.
18. Radiator clogged, fins damaged, or faulty cap.
19. No liquid circulation due to failed oil or water pump.
20. Cavitation due to air in oil or coolant system.
21. Water and oil mix due to blown head gasket.
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23. Improper spark plug heat range (too hot) and or gap.
24. Excessive engine load, brakes dragging, clutch slipping, transmission lubricant level too low or viscosity to high.
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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http://www.vitalmx.com/forums/Moto-Related,20/2008-RMZ-450-Locked-up,1217233
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How often to replace valves and such?


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