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Black smoke Suzuki GSX-R750

SUZUKI GSXR 750 FUEL INJECTION BURNING PLUGS AND IT HAS BLACK SMOKE LIKE ITS PUTTING IN MORE FUEL @

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  • Suzuki Master
  • 60,901 Answers

Hi, Zwelithini your instrument gauges and lights can alert you to most electrical and engine issues they can not warn you about failed engine gaskets or seals so your engine has to resort to old fashion alert methods of colored "SMOKE SIGNALS" here is a breakdown of their meaning:
1. COLORLESS OR SLIGHTLY BLUE SMOKE on start-up means your air/fuel mixture is the right composition and everything is well burnt in your combustion chamber.
2. BLUE SMOKE on startup is usually caused by failed valve seals dripping oil into the combustion chamber when the engine is not running.
3. YELLOW OR BROWNISH SMOKE at start-up means your air/fuel mixture is too lean. Too lean means that there is low fuel but high air mixture in your combustion chamber.
4. WHITE SMOKE on startup may be caused by a blown head gasket allowing coolant to enter the combustion chamber and may start dripping out of the exhaust pipes or mufflers. Smoke while riding is usually caused by worn out or damaged valves, seals, guides, pistons, rings, or cylinder walls.
5. BLACK SMOKE on startup is usually caused by too much fuel in the combustion chamber this can be due to air/fuel mixture adjustment too rich, accelerator pump improperly adjusted, faulty choke or not in the off position, air filter dirty and clogged, faulty carburetor float needle and seat, pilot jet too large, fuel injectors leaking, smoke while riding is usually caused by the main jet being too large or a damaged carburetor.
It should be noted that aggressive or abnormal throttle operation will cause these conditions to manifest themselves exponentially.
For more information about your issue and valuable "FREE" downloads that you will need for viewing or printing please click on the links below. Good luck and have a nice day.
https://www.gixxer.com/threads/idle-issue-then-black-smoke.356474/
https://www.youtube.com/watch?v=8YfEIP6eRzs
https://www.manualslib.com/manual/813897/Suzuki-Gsx-R750.html
https://www.partsfish.com/page/oem-parts-for-suzuki
https://www.gixxer.com/threads/k8-750-owners-manual.378746/

Posted on Jan 21, 2020

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Anonymous

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Posted on Jan 02, 2017

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Anonymous

  • 16 Answers

SOURCE: Fuel tap position for 1994 GSXR 750

down for on, forward for reserve, backwards for prime

Posted on Feb 21, 2009

RescueTechLA

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

tombones

  • 3567 Answers

SOURCE: i have a 89 suzuki gsxr 750,it fires but will not

Clean the air filter and, if you have one, remove the water trap bowl on the fuel petcock and clean it. How good is the battery? Install new STOCK plugs. Bear in mind it may be time for carb kits. Other than your cleaning the carbs, the carb kits and balancing and synchronizing of the carbs are best left for the shop to do.

Check the exhaust pipes. If there is a restriction in the burned gases exiting the tailpipe then the bike will not run right, will loose power and even die if too much back pressure builds up. Disconnect the exhaust system and tick off the neighbors with a quick ride around the block without a muffler. If the engine still dies then exhaust is not likely to be the problem.

Check the compression on all cylinders. Depending on the compression, the bike may be ready for a valve job. If you pull the head for the valve job then you might as well consider re-boring the cylinders and install new pistons and rings. Bear in mind, doing a valve job and / or pistons is not recommended for the novice. The good part is that when the work is finished you will effectively have a new engine.

Please rate this solution as "FixYa" if I have answered your questions. Thanks!

Posted on Mar 25, 2009

Anonymous

  • 39 Answers

SOURCE: my suzuki gsxr cuts out after 6000revs whilst on the road

sounds like carbs

Posted on May 15, 2009

Benimur

Louie Role

  • 6966 Answers

SOURCE: I need a wiring schematic for a 1993 Suzuki GSXR

Hi and welcome to the site,

Depending on the version, perhaps these would help:

  • wiring diagram GSX-R 750 91 up, click here;
  • wiring diagram GSX-R 750 93-95, click here.

Good luck and thank you for asking.

Posted on May 27, 2010

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1998 Suzuki GSXR 750 wiring diagram


Hi, Deneece for this scenario you will need your service, parts fiche, and owners manual if you can't find the best tool you ever bought for your Suzuki, despair not, for a mere zero $0 you can download another one. 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.
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FIRST check to see it you have spark at the spark plugs, then remove the plugs and either do a compression test with a gauge OR put a finger over the plug hole and turn it over and if you have adequate compression the engine will blow your finger off of the hole when it comes up on the compression stroke.

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best way to do this is to take spark plugs out individually and check for smell and sight of fuel. if it is getting fuel but not sparking then you will have a wet sparkplug. if it is dry look at the colour of the hook at the bottom of the plugs. brown plugs means running too rich, grey plugs means average burning and working well. black plugs is very bad and must be serviced. if all this not working the other test you can try but dont spill any petrol before you do this. if while you have plug out(only one at a tim or yuoll loose where wot leasd went to where) plugging it into the cable and holding with a very insulated pair of pliers, then try to turn bike over(start) whilst looking at the hook bit on the plug. if you see a bright spark from the plug then you will prob find they firing in the worng order. this could be a problem and should be dealt with by a dealer.

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Fuel tap position for 1994 GSXR 750


down for on, forward for reserve, backwards for prime

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