Question about 2002 Honda CBR 954 RR Fireblade
Hi, Mt_jpn some bikes get "Sun Stroke" after running fine in the morning then shut off and parked in the sun for a couple of hours on a hot day. You get back on the bike hit the starter button and nothing happens or the engine turns over but will not fire. Then you put the bike in the shade for 20-30 minutes and it fires up no problem.
The primary reason for this phenomenon is faulty wire connections in the Starter and/or Ignition Circuit. You may have a wire connection/component that makes just enough contact when cool to start and run the bike, but when parked and exposed to direct sunlight heat causes expansion and creates an "OPEN" in the circuit not allowing the bike to start. You move the bike into the shade for a few minutes, the temperature goes down allowing the connection to contract and make better contact and suddenly "it's a miracle" the bike starts. I know what you're thinking that Gremlin could be anywhere, and you would be right in that assumption, you can take your bike to a dealer, spend tons of "DRACHMA" only to receive validated nervous emotions the next time you park in the sun, then 1 week later it doesn't start. Start by doing a ground check:
Check the 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. Check all common grounds for the same suspects.
The secondary reason your bike may get "Sun Stroke" is vapor lock although this is a rare scenario it does happen.
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.
Thread Honda 2002 CBR 954rr UNKNOWN ISSUE
Starting problems CBR Forum Enthusiast forums for Honda CBR Owners
Honda CBR954RR 2002 Service Manual
Honda CBR900RR Fire Blade Owner Manual
Posted on May 28, 2017
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Posted on Jan 02, 2017
SOURCE: Rectifier Problem
If the battery is charged, its charged..... redpoint5 is right, check the battery when hot... If the battery was not charging i would then look into the charging system, rectifier, etc.... Is it an air cooled engine? Sometimes engines can get a little warped when hot... My grandfather had Corvair vans as taxis that somehow always got overheated, after that they would never start hot. So, he had to leave them running all day.... If your battery is OK you may want to have a look at your starter.... Or, bypass the selenoid with a jumper cable and see if the starter kicks over fine when jumped directly...... That would indicate a bad or worn selenoid.
Posted on Nov 20, 2008
SOURCE: engine won't start when hot
First, if you do a push start then put the bike in 2nd or 3rd gear, never in first gear. You will get better results.
Drain the carburetors. There should be a screw on the lower side of each carb float bowl. Remove the screw then replace it after the fuel drains. Remove the water trap bowl at the bottom of the petcock, (gas valve). Is there any water or trash in the bowl? Drain a cup of gas from the tank. Is there any water or trash in the cup? Dump it, clean it and re-mount it, (not all bikes have a water trap bowl). Turn the gas back on and wait a minute for the carbs to fill with gas. If the bike doesn't start and run properly then shut off the gas and remove the carburetors from the engine.
FOR EACH carb > Remove the float bowl and clean the entire carb with a spray carb cleaner from the auto parts store. Wear protective goggles to avoid getting spray in your eyes. Spray into all the little airways and fittings in the carb. Remove the idle screw and the air screw on the outside throat of the carb and spray into the screw holes as well.
< < READ CLOSELY > >
Be sure to put these two screws back in the same hole they came out of. IMPORTANT > do not tighten these two screws down. Only screw these in until they LIGHTLY seat. Now turn each screw one and one half turns outward. Put the rest of the carb back together, clean the air filter and install the carb. Before putting the slides back in the throat of the carbs, Move the clip on the jet needle one notch lower. Install an in-line fuel filter. Let the float bowl fill then start the engine. This process should get you back on the road.
By the way, after the next store visit, start the bike but don't turn the throttle open. Leave it closed or just crack it open a little bit.
Also, sync the carbs such that the slides on both carbs move at the same exact instant when the gas is slowly increased from idle speed.
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Posted on Apr 27, 2009
SOURCE: bike wont start
Was the battery discharged? i.e. the starter would not turn over?
You most likely have a problem with your charging system - one phase is possibly down in your stator and/or regulator. On a carburetor bike, it is possibe that it would still run in this condition but not provide sufficient voltage to charge the battery.
First test is to check the voltage across the battery with the engine running. It should be >13.5V . If less than this, it would support my suspicion.
Use this personally authored diagnostic guide to determine which component or components is bad and also recommendation for an upgraded solution which applies to most motorcycles, regardless of marque.
Posted on Aug 15, 2009
Sounds like you've blown a fuse rick .Also check for loose conections on solinoid and make sure it's getting 12v across the 2 low(12v)terminals best of luck....Tabs.
Posted on Oct 03, 2009
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