Question about Suzuki GSX 750 F (Katana Motorcycles

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I have a 1990 suzuki katana that i just recently bought which was not running. but it would start on started fluid. So i took apart the carbs and cleaned them and made sure all jets were clear. i put it back togther and made sure the bowls were getting fuel (they were) and then i started it. It started right up and ran about 30 seconds. then died it did this a few more times but would not stay running. does my bike a fuel pump? and does the fuel lines need to be bled before trying to start it?

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If it has a vacumn fuel tap the diaphram may have gone hard, and will need a kit.

Posted on Mar 20, 2011

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Posted on Jan 02, 2017

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Hi guys i just recently bought a suzuki gsx 600 f 1991 can anyone show me a picture or something when is the gas (FUEL) valve opened and closed on the bike it worked perfectly now it wont start. ...


As far as I know the fuel is vacuum fed to the carbs, did you take the fuel tank off & forget to connect all the pipes going to it? One is the vacuum pipe for the carbs.

Jan 24, 2015 | 1991 Suzuki GSX 600 F (Katana)

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Hi Terrence, you need to back through the carbs again and dip them in a carb dip and I am sorry you can't find the first and best tool you ever bought for your Harley but despair not for a mere $15.00 you can download another one. For more information about your issue, please visit the websites below. Good luck and have a nice day.
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I bought a 1991 gsx600f and it was dieing when the bike was cold or warm and would stick up at 3000 if i gave it gas. bike dosent die if i ride it but when it drops under 300 rpm the bike stumbles and...


Hi, Timothy_towd "ABSOLUTELY" you need to go through all 4 carbs set the proper float height and then have them synced for this scenario you will need your service/owners manual if you can't find the first and best tool you ever bought for your Yamaha, 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 please click on the blue links below. Good luck and have a wonderful day.
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Apr 09, 2017 | 1991 Suzuki GSX 600 F (Katana)

1 Answer

1990 Suzuki GSX 600 F only running on 3 cylinders


Hi, Foxygirl309 you need "FIVE" things in order for a cylinder to run properly:
1. FUEL: in order to validate your not getting fuel spray some starting fluid into the air cleaner and hit the starter button, if it fires up and runs for a few seconds then you know you have a fuel delivery issue. Multi carb banks should be bench "SYNC"
2. SPARK: remove the spark plug and with it connected to the spark plug cable ground the threads to something metal you should see a bluish white spark if not you have a faulty spark plug, spark plug cable, ignition coil, condenser, CKP, ECM, sensor or the wiring in between.
3. COMPRESSION: you must have at least 80-100 PSI for most bikes, multi-cylinder engines should be within 10-15% of each other if not perform a leak down test you may have a burnt or bent valve or hole in the piston or broken rings.
4. CAM TIMING: confirm your timing marks are aligned to see if the cam chain or adjuster are worn out and the chain has skipped a couple teeth.
5. IGNITION TIMING: on older bikes check to see if your points have not closed up, timing plate has not become loose and confirm with a timing light for proper retard and advance functions, on newer bikes where timing is controlled by an ECM and is nonadjustable check you CKP, TPS, MAP, O2, sensor or its counterpart for integrity.
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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Oct 31, 2017 | 1990 Suzuki GSX 600 F (Katana)

1 Answer

Bought 750 katana as project it did not start but


Hi and welcome to FixYa,

To determine if fuel is entering the combustion chamber, place back the spark plugs without the wires. Start and remove the spark plug again. They would be wet with fuel.

Additionally, loosen the drain screws at the bottom of the carb's bowls. Collect the draining fuel from the drain hose individually. Compare quality and quantity while noting for presence of sand, dirt, rust, water or any other contaminants.

Starter fluid maybe used.

Good luck and thank you for asking FixYa.

Jan 06, 2010 | 1993 Suzuki GSX 750 F (Katana)

1 Answer

1995 750 Katana will not stay running


did you try the fuel petcock on the bottom of the tank? If not, pull it out and check the fuel filter on the top of it. If it won't start because of no fuel, that maybe the problem or it could just be a vaccum leak. Check the tubes for leaks or just replace them, they are cheap. If it isn't starting because it floods out from to much fuel, then it might just need a new petcock. How did the diaphrams on the top end of the carb look?

Sep 10, 2009 | 1995 Suzuki GSX 750 F (Katana)

1 Answer

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

Jun 21, 2009 | 1990 Suzuki GSX 750 F (Katana)

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