Question about 1998 Suzuki GSX-R 750 W

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After about one hour riding bike wont rev over 5500rpm

The engine does not turn off though goes back t normal when you let off throttle

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When was last tune up?? tune up time??

Posted on Jan 14, 2009

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Engine Rev goes too high while starting


have tried lubricating the throttle cable and twist grip mecanism , is the cable routed correctly and no kinks in it ? where the carb fits to the engine check the rubber mount has no cracks or holes as it will draw more air than needed !

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Engine Rev goes too high on Starting the engine


Arul,
It sounds like you installed a new carburetor and the problem remains. You may have a vacuum leak between the carb and the engine allowing in too much air and causing a lean fuel/air condition leading to high revs. Check your vacuum lines for cracks, check your carb holder for cracks or gaps, listen closely for an air leak. Replace any cracked lines or carb holder with new, or a temporary fix may be done by sealing the carb holder with a silicone adhesive to stop the leak.

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Not Accelerating beyond 40-50 kmph


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I have a 1987 Valkyrie. When I apply full throttle (especially on low gears), I experience a severe flat spot from around 3000 revs upwards; as if the bike is fuel starved. If I back off the throttle, it...


Hondas have used a CV vacuum slide carb in their street bikes for years, and to correct for the lag they normally utilize an accellerator pump that shoots fuel directly into the intake when you twist the throttle. It's a simple diaphragm pump, and if it got dry during storage, they will fail from dry rot. I'd replace it given the age of the bike anyway and I'd bet it cures your accelleration issue. Also check all the hoses associated with vacuum connected to the carbs for leaks and dry rot as well.

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Hyosung avitar 650 wont stay running


Maybe this will help. This is a common problem that I have had with my GV250. Almost the same bike mechanically by Hyosung.

If the battery is low on charge and you are lucky enough for the bike to start. As per normal when first started it revs higher because the bike is cold, this turns the alternator fast to give you the electricity you need to keep the bikes computer working properly. Bike will warm up and revs drop down, alternater not turning as fast, not as much electricity being made. Bike will either stall or rev up and down irradically to try to produce its own electricity. This will occur when the battery charge is low and bike is at low revs, for example when you slow down for traffic or you stop.

If this is your problem. To resolve it when you are out on the road, keep the revs up, twisting your throttle gently when you are going slow or stopped. Give the bike a good long run on the open road to give the battery some charge from the alternator.

Make sure your battery is maintained. If you dont use your bike for a while it will lose charge just sitting there doing nothing. Give the battery a good deep cycle charge or take the bike for a good long open road ride.

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1 Answer

2001 harley fatboy caugh and pops back through throttle body when cold. runs find when hot.


If you try to ride the bike or rev the engine up while it's cold, this is normal. Most engines will do this because the mixture is lean for a cold engine. When you start the engine, allow the engine to warm until it goes into the slower idle speed.

Good Luck
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Screaming sound


its quite normal for these bikes to scream at high revs its what they do at the high revs though it becomes more apparent with engine age and thrashing into the high revs maybe a good service is due hope this helps

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2 Answers

After a while of riding bike doest go over 5500rpm


NORMALLY HIGH REVING ITS BAD SPARK PLUG CHECK THE TUNE UP PIERRE

Jan 10, 2009 | 1998 Suzuki GSX-R 750 W

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