Question about 1995 Suzuki GSX-R 750 WS

7 Answers

Starting Problems. Hi, Having a nightmare with a GSX-R750WS. It all started when the previous owner fitted a dodgy alarm/remote start to the bike and butchered the wiring loom to do so. The bike started to cut out and the alarm would randomly go off whilst riding so.. I have fitted a new loom, starter solenoid and side stand relay. I have bypassed the side stand switch, resoldered all of the ignition wires correctly with good continuity and still when you turn the key and lights come on as normal, press the starter button nothing happens. I have checked all the usual stuff, battery, ignition switch, stop switch etc but with no joy. The only thing i have noticed is the voltage at the side stand relay coil. When the key is turned the voltages rises activates the coil then drops off streight away de-energizing the coil and so giving like a double click when the key is turned. If i bypass th3e relay then the starter button works and the bike turns over but will not fire. All help of appreciated as this is realy getting anoying!!

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  • mf142 Jun 06, 2009

    I have checked this and the connections are all fine. If i bypass the side stand relay (which i have replaced with a new item) the bike will turn over on the starter button. This confirms that the starter solenoid and motor are working and connected fine.



    I cant get the side stand relay to stay energized thus alowing the starter to operate.

  • mf142 Jun 06, 2009

    The engine will turn over but wont fire when the side stand relay is bypassed. I cant get the side stand relay to remain energized.

    If i press the start button and then turn the key the bike will turn over for 1 second and then stop again.

  • mf142 Jun 06, 2009

    Thanks for the reply but this is an electrical issue, the fuel is getting through fine.

  • mf142 Jun 06, 2009

    Thanks for the reply but its Its not a fuel or carb issue. The bike will not turn over when you press the starter button. The only way to get the bike to turn over is to bypass the sidestand relay but then there is no spark.
    Cheers

  • mf142 Jun 06, 2009

    i have replaced the sidestand relay and the CDI unit with a proven unit but with no joy. I am pretty much run out of ideas now, just hoping that i could have missed something simple.

  • mf142 Jun 06, 2009

    I have tried push starting but with no luck.

  • mf142 Jun 07, 2009

    I dont understand what you mean by grounded 10v. I have checked the resistance between the -ve side of the circuit and ground this is a low resistance normally 0.02 ohms. The votage between ground and +ve is 12 volts.

  • mf142 Jun 08, 2009

    have checked voltages they are fine. Bike will not even turn over unless i bypass the side stand relay. I think this could be and indication of the fault but not sure what is causing it.

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7 Answers

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  • Master
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Did you take the remote start & alarm system off if so then everything should have went back to normal the alarm & remote starter will actually make things not work at all i would get a wiring diagram on the bike then retrace the wires on the original wiring diagram

Posted on Jun 08, 2009

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Pls check the sparkplug clean it with sand paper. check also the ignition coil and battery voltage 12VDC check by multitester.

Posted on Jun 07, 2009

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You have the right looking relay but it is one that is opposite of what you should have installed. Look closely and you will see what I mean.

Posted on Jun 06, 2009

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Have the CDi checked and the side stand relay replaced, the starter assembly will be the last at fault because you have to have a blown starter to blame it.


Posted on Jun 06, 2009

  • 1 more comment 
  • marlon john madrid
    marlon john madrid Jun 06, 2009

    have you tried hitting this with a jumper to have direct current going to the starter or PUSH start it downhill. if so, best bet is to get a Suzuki bike tech for this to have everything sorted out.

  • marlon john madrid
    marlon john madrid Jun 06, 2009

    have you had a professional check on the circuit? engine sounds good, bot not the circuit. do you have a multimeter? if so, will you check if the frame is grounded more than 10 volts

  • marlon john madrid
    marlon john madrid Jun 06, 2009

    was the frame grounded?

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If the bike has set up for a while clean carbs take them apart and clean the jets gas goes bad and clogs the pasages up .
------------------
if you get sparks at the plugs and still it does not starts then its definately the crabs.you didn't remove the jets in the carbs did you?....both the main jets and the all important idle jets must be cleaned and where they screw in has to be blown out with compressed air...idle jets are normally recessed in the carb...remove them with a flat blade screwdriver BUT make sure its a perfect fit as the jets are brass and they strip very easily.
thanks.

Posted on Jun 06, 2009

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There may not be an in-line fuel filter on the bike. Most bikes don't come with them. Yes, the fuel petcock has two screen filters on one pipe and they can get clogged up. Remove the tank then remove the petcock and clean it. The gas in the tank should be dumped into a clear plastic storage bin so that you can see if there is any water in the gas as well as rust and trash. Your bike is 15 years old and the inside of the tank may be rusty. If so, Google kreem fuel tank liner “ or go to

www.http://www.4secondsflat.com/Fuel_Tank_Sealer.html

This will end the rust problem. Go ahead an install an in-line fuel filter. There is a drain plug on the lower left side of each carb. Drain each carb into a clear container and look for water and trash. You may need to clean the carbs but hold off to see if the other stuff fixes the problem.

Go to the site below where you can see a parts diagram for your specific bike. You will select the actual brand, year, model, etc., once you go to the site. Part numbers and prices are also shown. You can order parts from this site. In the event no price is shown on a particular part, the part is not in stock.
www.babbittsonline.com/pages/parts/viewbybrandand/parts.aspx

Posted on Jun 06, 2009

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  • Master
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Hi and welcome to FixYa,

Almost always, if you would follow the big red cable from the battery's + terminal, it would go to one terminal of the starter relay. The other terminal of this relay would then go to the starter motor. It would look something like the image below.
Starting Problems. - ddbe20f.jpg
Good luck and thank you for using FixYa.

Posted on Jun 06, 2009

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