Question about 1990 Suzuki GSX-R 750 L

2 Answers

Gsxr 750 slingshot, fuel problem?

Hi, I just resprayed my bike and cleaned it with a high pressure cleaner, now the bike refuses to start, I suspect that the fuel is not coming through, there is spark on the plugs, what else can I look at thanx

Posted by on

  • moelich Dec 05, 2008

    thanxs for the ideas guys but it was a small stupid fault on my side, die vacuum pipe on the carbs was connected to the what I guess would be the overflow on the tank and not the tap resulting in not getting any fuel to flow out, you know how it goes when you're in a hurry, everything goes wrong, thanx anyway



2 Answers

  • Level 1:

    An expert who has achieved level 1.


    An expert that has over 10 points.


    An expert whose answer got voted for 2 times.

    Problem Solver:

    An expert who has answered 5 questions.

  • Contributor
  • 15 Answers

The slingshot does NOT have a fuel pump. It is gravity feed through a petcock. Make sure that the petcock is set to the ON position. Its under the tank on the side.
If your bike has K&N filters on the carbs make sure you cover them with a plastic back before you wash next you will have to wash them and re-oil them before you put them back on. Dont use super high pressure washer to wash your bike. A garden hose will do.
If it has the stock air filter you might have gotten water into the carboration system with that high pressure washer you used. You'll need to disassemble the airfilter unit and either remove your carbs to take off the float bowls and get the water out or try to drain your float bowls while the carbs are still on the bike. Siphon out all the old gas if you think you got water in it or you will have to do this all over again. Sounds like you intoduce water into the system to me.
1. Got good gas?
2. Got spark?
3. Got oxygen?
4. Got rid of water in the system? = Should start.
I use to own a sling shot too. 1988 model red and white.

Posted on Dec 05, 2008

  • Level 1:

    An expert who has achieved level 1.


    An expert that got 5 achievements.


    An expert whose answer got voted for 20 times.


    An expert who has answered 20 questions.

  • Contributor
  • 65 Answers

If you have a spark ,remove fuel pipe from bottom of carb , if fuel is present then the problem may be blocked carbs (common after a respray ). if fuel is not present the n the filter will be blocked in the fuel tap just remove and clean hope this helps

Posted on Dec 03, 2008


1 Suggested Answer

  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi there,
Save hours of searching online or wasting money on unnecessary repairs by talking to a 6YA Expert who can help you resolve this issue over the phone in a minute or two.

Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.

Here's a link to this great service

Good luck!

Posted on Jan 02, 2017

Add Your Answer

Uploading: 0%


Complete. Click "Add" to insert your video. Add



Related Questions:

1 Answer

94 Suzuki GSXR 750 flooding out

have you checked the carbs are clean and all seals are good ? floats float if you put in a jar of fuel ?

May 12, 2014 | 1994 Suzuki GSX-R 750 WR

1 Answer

Mikuni carb diagram

HI Keith. As far as l know the bore size varied over the years, 1987 - first models - were 36mm, l've got a set.
Google Slingshot carbs & Suzuki GSXR 750 Slingshot carbs, there's a wealth of info on how to identify & also do a complete strip down

Regards Clive



Nov 25, 2013 | Motorcycles

1 Answer

My suzuki gsxr 750 sat all winter and i didnt winterize it at all. the battery died... i charged it and my bike just wont start. It cranks over just won.t start. What should i do?

check spark plugs,check for spark. check fuel is good. possible needle and seat gummed up in carb float bowl. disasemble and clean with brake or carb not change float level. re assemble ,you can use the cleaner to help to fire the motor with a shot through the carb. make sure you cleaner says flammable. good luck.

Mar 22, 2010 | 2007 Suzuki GSX-R 750

1 Answer

Colours for gsxr 750 suzuki

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.

May 28, 2009 | 1990 Suzuki GSX-R 750 L

2 Answers

Will not rev over 8000 rpm

This is hard to tell without riding it to feel the condition. Here are a few things that come to my mind.

1 Spark plugs or ignition system not able to handle the higher demands of the higher RPMs

2 battery or charging system not creating enough power to meet the higher demands of the bike (ignition and fuel systems)

3 Fuel flow to the carbs is low or the main jet is clogged.

4 valve adjustment and or valve timing

May 18, 2009 | 1998 Suzuki GSX-R 750 W

2 Answers

GSXR 750 Slingshot wont rev past 5000rpm, with or without choke

I have seen this before a few things to do too make sure. First take the air filter out and shine a light use your fingers to move the slides up and down I suspect the springs that go on the slide is not seated in center you can tell from the slide going halfway and hanging up. Next, the boots on the slides only go on 1 way there is a notch on the carbs for them. I would guess this would fix you up if not we can get deeper into it with air-fuel mix screw settings.good luck

Mar 23, 2009 | 1998 Suzuki GSX-R 750 W

2 Answers

GSXR 750 Slingshot does not start

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.

Feb 26, 2009 | 1990 Suzuki GSX-R 750 L

1 Answer

Will another rear shock fit my 1989 gsxr 750 slingshot.

Have a look on the Hagon site, take a note of the part number and try eBay, breakers etc for a replacement. Good Luck !

Dec 12, 2008 | 1989 Suzuki GSX-R 750 K

2 Answers

I just resprayed my gsxr 750 slingshot, it was running before that but now I have a problem starting the bike, I just used a high pressure cleaner to clean the bike and suspect that the problem is fuel not...

If ur problem is that the bike is not getting any kind of sputter or fire when you turn it over then 2 things...
1st is easier, alot of bikes even when their battery shows its ok, it may not be you can tell by hooking up a booster (a jump) when starting and this can be a major problem with a little fix
2nd suggestion which I have had to do on many bikes (which Is why I suggest the easier of the two first) can be a real pain in the ****, you have to pull your tank if it does have a fuel pump this is where you will find it, if there is one you will have to pull it apart very carefully and clean it with an air hose to get all of the grime out and then carefully put it all back together...also you should go ahead and get some carburator cleaner and flush out the fuel lines, fuel filter, and then the carburators...
...if indeed you have a problem with the fuel this should fix it...sounds to me like u may have a slight problem with both

Dec 02, 2008 | 1990 Suzuki GSX-R 750 L

Not finding what you are looking for?
1990 Suzuki GSX-R 750 L Logo

1,094 people viewed this question

Ask a Question

Usually answered in minutes!

Top Suzuki Experts


Level 3 Expert

79865 Answers

Arnie Burke
Arnie Burke

Level 3 Expert

4904 Answers


Level 2 Expert

83 Answers

Are you a Suzuki Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides