Question about 1990 Suzuki GSX 750 F (Katana)

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1990 Suzuki GSXR 750 quit running

I have a 1990 Suzuki GSXR 750, the problem I'm having now is after about 15 minutes of riding my bike stalls. I have recently had the carburetors synchronized but that did not help. Has anybody else had this issue? Any advice would be great, I don't want to take it to the shop again without the problem being fixed it's too expensive.@

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  • Suzuki Master
  • 57,616 Answers

Hi, Jsjss5 and the usual suspects are:
1. 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.
2. Failed alternator/generator and or voltage regulator.
3. Loose or corroded battery terminals and or cables especially the "NEGATIVE" cable, look for loose, corroded, or broken connectors inside the cable harness at "BOTH" ends.
4. Failed main circuit breaker or ignition switch, check for loose connections and continuity.
5. Failed system and or ignition relay, check for continuity.
6. Failed ignition coil, stator, magneto, ignition/electronic module.
7. Failed CKP, CPS, CMP, MAP, TPS, or BAS sensor, corroded, loose or broken wire connector pins/sockets.
8. Throttle cables and or idle speed improperly adjusted hot idle speed should be 950 RPM to 1000 RPM.
9. Faulty neutral, side stand or clutch lever safety switch.
10. Air/fuel mixture screw improperly adjusted.
11. Accelerator pump damaged or not working.
12. Water or dirt in the fuel system, carburetor or filter.
13. Restricted, blocked or kinked fuel line.
14. Fuel tank empty.
15. The gas cap is not venting properly or fuel tank venting system blocked.
16. A failed fuel pump, pressure regulator and or fuel injectors.
17. Vacuum line from intake manifold to petcock broken, cracked, or not attached, carburetor vent line plugged.
18. Needle and seat stuck closed in the float bowl.
19. Lean angle switch is faulty or needs adjustment.
For more information about your issue and valuable "FREE" downloads that you will need for viewing or printing please click on the blue links below. Good luck and have a wonderful day.
Help bike cut out while riding Suzuki GSX Motorcycle Forums Gixxer com
bike cut off while riding
Suzuki GSX R750 Service Manual
OEM parts for Suzuki
http://mybikemanuals.com/suzuki/suzuki-gsx-owners-manuals

Btw, I’m available to help over the phone in case u need at https://www.6ya.com/expert/gregg_c0ec1df182c7330e

Posted on Oct 16, 2017

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6 Suggested Answers

6ya6ya
  • 2 Answers

SOURCE:

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Posted on Jan 02, 2017

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RescueTechLA
  • 2653 Answers

SOURCE: owners manual required for a 1989 suzuki gsxr 750 RK model

I've got a service manual for a GSXR 750F

Would that help?

Let me know.

Posted on Feb 28, 2009

Benimur
  • 6966 Answers

SOURCE: suzuki gsxr 750 does not start sparks batt ok,

Hi and welcome to FixYa,

Initially, perform below tests:

  • remove all the plugs and spray starting fluid (or fuel) on all cylinders. Return the plugs and try again. If it fires even just a few times, then fuel is not entering the combustion chamber;
  • loosen/remove the drain screw at the bottom of the bowls. Check for the presence of fuel (and also determine if there are sediments, rust or foreign matter). If there is no or little fuel, then fuel is not entering the carbs;
  • if your fuel control/valve has provision, turn it to PRI. With the drain plugs still loosened or removed, fuel should flow out of the drain hoses (pls ensure that it is properly channel to a catch/holder and ensure other safe condition/practice).
At this point, you may want to check fuel delivery from the tank down to the carbs.

Good luck and thank you for using FixYa.

Posted on Apr 20, 2009

  • 1 Answer

SOURCE: My suzuki gsxr 750 loses power with new batteries

your katana does have an alternator on the rear of the motor

Posted on Jun 07, 2009

  • 14 Answers

SOURCE: Drives great but at/when drops to idle it stalls

When you are on the bike and riding do you still have the choke out? And stop spraying starter fluid into the carbs..bad bad bad.... bikes start with out that stuff and if you need it then something is wrong.. your gonna mess something up doing that....let me know about the choke and we will go from there...cj_monaco@hotmail.com

Posted on Jun 21, 2009

  • 4 Answers

SOURCE: backfire during shifting between gears

could be few probs, carbon build up on piston crown try a good cleaner fuel additive, your exaust is leaking or blowing allowing air to be sucked back in on revdown as well as you could have a inlet fault overfueling leaving to much unburnt fuel to enter your exaust, might be simple fix by just replacing the air filter and checking for burn marks around the air intake.

Posted on Jul 10, 2009

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Hi, Marcdelve and the usual suspects are:
1. Idle port, transfer ports, slow air jet clogged.
2. Idle adjusting screw set too low.
3. Air fuel mixture adjustment too lean.
4. Pilot/slow fuel jet clogged.
5. Faulty accelerator pump.
6. Float level too low.
7. Float bowl contaminated old fuel, water, dirt, rust, etc.
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9. Fuel line to carburetor kinked or pinched.
10. Fuel filter clogged.
11. Intake manifold leak.
12. The gas cap is not venting properly or fuel tank venting system blocked.
13. Vacuum line from intake manifold to petcock broken, cracked, or not attached, carburetor vent line plugged.
14. Needle and seat stuck closed in the float bowl.
15. Multi carburetors not in sync.
16. Faulty fuel pump.
For more information about your issue and valuable "FREE" downloads that you will need for viewing or printing please click on the blue links below. Good luck and have a wonderful day.
http://katriders.com/vb/showthread.php?t=107991
Throttle position sensor fix GSXR 750
Suzuki 85 GSX R750 Service Repair Manual
OEM parts for Suzuki
http://mybikemanuals.com/suzuki/suzuki-gsx-owners-manuals

Btw, I’m available to help over the phone in case u need at https://www.6ya.com/expert/gregg_c0ec1df182c7330e


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03 Suzuki GSXR 750 keeps shutting off while I am riding?? HELP!


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I have a gsxr 750 wr fuel tank mod?


I have been fixing bikes and I never came accross such an equipment but instead I would suggest you look on ebay as there are things that never existed that you can get there and very cheap too.But to my knowledge I have not seen one and it will be quite awkward to fit as you will need a wired connection to the sensor or float...

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the paint codes are available in the parts list for your bike. The parts list is available many places on line. Finding the paint is more difficult, one source is Colorrite.

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