I turn my key to my 98 gsxr 750 fuel injected bike and the only thing that comes on are the lights and horn. no noise what so ever. Bike wont crank unless a charger is put directly up to the starter and even then it wont start. acts like it wants to but it wont start and battery reads 13v so its good

Question edited to add full 'year maker model'.

Code 21

https://www.google.com/search?q=2008+Suzuki+GSXR-750.+Error+Code+C21

All about Code 29

https://www.google.com/search?q=2008+Suzuki+GSXR-750.+Error+Code+C29

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If the bike was running correctly when it was put in storage two years ago, I would start with the easy things first: As the previous poster suggested, install new, correctly gapped plugs, along with a new battery. Your bike uses an electronic ignition system, and it will not opporate correctly if you have a bad battery. The bike will miss, pop, and backfire, because there is not enough electrical power in storage (battery) to properly run the ignition system.

If these two things do not get the bike running correctly you will need to look at the carbs. Was the bike stored with fuel in the tank and carbs? If so, this is the most likely reason for the bike not wanting to run correctly. Flames from the exhaust are an indication of a very rich fuel/air mixture (a float could be stuck open (it can also be caused by the ignition not working properly and allowing unburnt fuel into the exhaust system)). Cleaning and reassembling mulitple carborators is not that difficult if you are careful and reasonably handy, but tuning them properly can be very difficult. You can save a lot of money if you rebuild them yourself, then take the bike to the shop to be tuned (The standard service rate these days is around $75 an hour)

Hi, if the oil light is staying on...........BIG bucks to fix if you run it for too long, you should hear the engine banging away quite noisely if the oil pressure is way too low Is the bike fuel injected or does it have carburettors, if it is the F.I light, it could be a blocked fuel filter causing a drop in fuel pressure at the injectors..... hence the warning light coming on.
Get yourself a friendly bike shop to have a look for you... ask your friends if they use someone they would reccomend to you. Merry Xmas.

Around 2000 was the first year for fuel injection for the GSXR 750. It really isn't a 'choke' in the true sense of the word. It's a device that causes a high idle similar to an 'enrichener circuit' to warm up the bike engine. There should be no damage to the engine by leaving it on for a short ride so I'm thinking there was an unlerlying issue with the bike that the previous owner left undisclosed.

Around 2003 that device was abandoned due to the advancement of technology in fuel injection and was no longer needed.

After typing this response I just noticed the original post date was in 2012 and I'm sure the bike has been either repaired, sold or crashed by now but maybe this answer will be helpful to someone else.....

I had the same bike, there is a fuel sensor under the tank, they tend to go bad sometimes. As for the temperature issue, I'm not sure why it would go blank? I had the same bike, loved it.

The F1 light is really Fi, Fuel Injection. The fuel injection sensors have detected a problem in the system. Major problems will not let the bike start. You will need to get the bike to a dealer so they can hook up a code reader. The reader will pin point what the problem is. Once you know the source of the problem you can then decide if you can fix it or if it is time for the dealer to service the bike. Please rate my answer. Thanks!

Hi from Spain,

no way to choke this fuel injected bike in theory....but by my experience try to start the bike with fully open throttle several times, take care do not flat the battery, if the bike has not much fuel do not try with the bike on the side stand so the fuel cannot reach the fuel pump inlet.

BR,

Emilio.

It has injectors.Does it display any "C" codes when you crank it up? Did you ever tinker any Fuel Injection modules or sensors? Have you inspected/ or visual checked or try to replaced your fuel filter?

the exhaust gaskets really should have nothing to do with whether your engine will not start. However I assume that by not starting it is turning over smoothly like it should when you try to start, having covered that most motors will not start because no fuel, no spark, or no air not withstanding some major mechanical failure in the valve train or timing or piston, cranks et al..
Trying checking for the obvious first fuel, spark, air flow. then go from there hope this helps