Question about 2007 Suzuki GSF 1250 Bandit

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1250 Bandit runs fine at part throttle, but feels like it is starving for fuel at WOT. ???

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Re fuel problem on 2007 1250 GSF Bandit.
Take out the fuel pump, and check cleanliness of screen.
It sounds like it is partially blocked to me. The screen is small and it does not take much to block it up with gunk. You should then have full fuel flow. You have to remove tank, and turn upside down, then remove the allen bolts and carefully work the whole assembly out. Be careful, because it will only slide out and in at a particular angle. You are supposed to replace the O ring seal, but I think this is on condtion. Clean the seal and put some sort of synthetic or rubber grease on it.

Posted on Oct 21, 2009

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I would like to lower the seat height, the owners book states see dealer as if you require parts

Posted on Jan 16, 2010

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Sounds like a carburetor problem. Have you recently changed air filter, exhaust set up or anything like that? If so you may need to change/ adjust jets. This is a complicated proceedure but possible if you have spare time and a bit of know-how.

If the bike sat for a while before this problem started it may have some residue left when the petrol evaporated, blocking part of the carbs. In this case they will need a thorough clean.

Posted on Sep 28, 2009

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Posted on Jan 02, 2017

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I have a 1250 bandit 2009 s on start up the rev counter doesn't move and my speedo doesn't light up also it will run for about 10 seconds then cut out thanks


Hi, Nick and the usual suspects are:
1. Severely discharged or a damaged battery, should have 12.5 volts or better and be able to pass a "LOAD" test if necessary, your battery may show 12.5 volts but have little or zero amps and needs to be replaced.
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, points/condenser 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. Air/fuel mixture screw improperly adjusted.
10. Accelerator pump damaged or not working.
11. Water or dirt in the fuel system, carburetor or filter.
12. Restricted, blocked or kinked fuel line.
13. Fuel tank empty.
14. Fuel tank contaminated with ethanol sludge.
15. The gas cap is not venting properly or fuel tank venting system blocked.
16. Vacuum line from intake manifold to petcock broken, cracked, or not attached, carburetor vent line plugged.
17. Needle and seat stuck closed in the float bowl.
For more information about your issue and valuable "FREE" downloads that you need please click on the blue links below. Good luck and have a wonderful day.
Suzuki bandit stalling few minutes after start merged
Suziki Bandit 1200 cuts out when opening throttle
Suzuki GSF1250 Service Manual
OEM parts for Suzuki
http://mybikemanuals.com/suzuki/suzuki-gs-owners-manuals

Mar 31, 2017 | 2009 Suzuki Bandit 1250S

1 Answer

07 bandit 1250 shows chec on clocks turns over fine but will not start


When the display indicates 'CHEC', check following items:
* Make sure that the engine stop switch is in the (on) position.
* Make sure that the transmission is in neutral or the side stand is fully up.

If the display still indicates "CHEC" after checking the above items, inspect the ignition fuse and the connection of the lead wire couplers

Aug 29, 2014 | 2007 Suzuki GSF 1250 Bandit S

1 Answer

Suzuki gsxf 1250 bandit


sounds like you need to remove the pairs system (lots of people are having this ) popping , coughing in the exhaust but not a misfire

thank to the eu for this system

Jun 05, 2013 | Motorcycles

1 Answer

Will a Suzuki bandit 1200 starter motor fit a 1250 bandit?


check they are similar if so the only difference could be the teeth of the drive therse no reason not to work if the teeth are the same in number

Jan 01, 2012 | 2007 Suzuki GSF 1250 Bandit S

1 Answer

1992 Suzuki GSF 400 Bandit carburetor jetting


Hi, Crazystang79 if you have changed your fuel delivery system, air filter size or flow rate, mufflers or exhaust system or a significant change in altitude your carburetors need re-tuning and if your fuel system (gas tank, filters, fuel valve and carburetor) is contaminated with ethanol sludge, varnish, rust, dirt, water etc. or your bike has been sitting for months or years without running these components must be "PROPERLY" cleaned and reassembled "CORRECTLY" before any adjustments can be made. Tuning your carburetor is fairly simple once you understand the basic principals. You engine is a simple airbox sucking air in and blowing it out, it is finely tuned at the factory for maximum performance once you upset that delicate balance by changing air filters, camshafts or exhaust systems your performance may go down the and the engine may run poorly, you need to compensate the air-fuel mixture in the carburetor in order for the engine to run smoothly and at peak performance. If you are running multi carburetors you need to sync them first and make sure your air cleaner element is clean and dry for paper elements or lightly oiled for foam and meshed elements and properly installed. Here is how and where you compensate trouble: "TIP" if your engine "BOGS" your not getting enough fuel.
1. Closed to 1/8 throttle is managed by the air screw and pilot/slow jet.
2. 1/8 to 1/4 throttle is managed by the air-screw, pilot/slow jet, and throttle slide.
3. 1/4 to 1/2 throttle is managed by the throttle slide and jet needle.
4. 1/2 to 3/4 throttle is managed by the jet needle, needle jet, main jet, and air jet.
5. 3/4 to wide open throttle is managed by the main jet and air jet.
6. Wide open throttle is managed by the main jet.
If you are running lean, spark plug electrode color is white, engine runs hot and feels like it is starving for fuel you need to go up on the jet size or move the c-clip down one notch. If you are running rich, spark plug color is black or dark gray, engine runs cool, and bogs down when accelerating you need to go down on jet size or move the c-clip up one notch. When your carburetor is properly tuned for maximum performance your spark plug electrode will be a light tan color like coffee with cream. If you prefer fuel economy over performance you can go down on main jet sizes until a satisfactory level of lower performance is acceptable versus MPH, your spark plug color will be whiter and your engine will run warmer. These tuning adjustments will only make improvements if your intake and exhaust system have no air leaks or sealing issues and the entire electrical system is in proper working order and you have no mechanical issues.
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.
Carb Rebuilding Needle Jets Jet Needles etc
Carburator Theory and Tuning
Suzuki GSF 400 BANDIT Service Manual
OEM parts for Suzuki
http://mybikemanuals.com/suzuki

May 17, 2017 | 1992 Suzuki GSF 400 Bandit

2 Answers

Will not idle


blocked carbs, get a good fuel system cleaner, if you in USA get Berrymans B12, double the dose and mix in tank. run til hot then leave to stand overnight. also if you can remove the air cleaner to get to carb intake, get spray carb cleaner an chuck a load in there. also check to see if you have a fuel filter inline

Apr 10, 2009 | 1991 Suzuki GSF 400 Bandit

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