Question about 2008 Triumph Thruxton 900

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Bike is sputtering around 4k rpm and steady throttle.

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6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

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tellme2
  • 137 Answers

SOURCE: GSX 600F idle and throttle probs

hi m8,, just a couple things,, wen u stripped the carbs down and cleaned them,, did u take the main jets and cold start jets,ie the jet that the needle in the carb sits in,, and poke the dirt out with a pin,, so u can see threw all the holes wen held to the light, u have a blockage still in the carbs,, undo bottoms of carbs take the main jet and the needle jet out ,,and clean ,, make sure your airbox is sealed down on the carbs and jubilee clips are tight,,,1 at a time pull off the spark plug cap and pull off the cap from its ht wire and snip a little bit off the end so u can see copper or brass stranded wire then screw cap back on ,do that to all 4 caps, do these checks ,the bike will run good, ,, look more in2 the carbs tho ,, its almost certain u have a bloked jet still

Posted on Jan 27, 2009

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  • 492 Answers

SOURCE: Bogging engine 3400-4000 RPM under full throttle.

Sounds like one of the intermittant jets is clogged. Need to clean the carbs.

Posted on Apr 30, 2009

  • 3567 Answers

SOURCE: Sputtering around 5500 rpm

You will probably have no need to replace the gasket. Yes, clean the carb and concentrate on the main jet. ALWAYS have a fire extinguisher on hand when working on carburetors.

Remove the float bowl and clean the entire carb with a spray carb cleaner from the auto parts store. Wear protective goggles to avoid getting spray in your eyes. Spray into all the little airways and fittings in the carb. Remove the idle screw and the air screw on the outside throat of the
carb and spray into the screw holes as well.
< < READ CLOSELY > >
Be sure to put these two screws back in the same hole they came out of. IMPORTANT > do not tighten these two adjusters down. Only screw these in until they LIGHTLY seat. Now turn each adjuster one and one half turns outward. Put the rest of the
carb back together, clean the air filter and install the carb. Let the float bowl fill then start the engine. This process should get you back on the road.

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Posted on May 19, 2009

  • 3 Answers

SOURCE: Bike backfires and I can't get a smooth ride

I would say it is a faulty engine temp or Air temp sensor,

Posted on Jun 29, 2009

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1 Answer

Sputtering at low rpm ttr230


Run some carb cleaner through the tank. "Seafoam" has a real following. It could be that the jets are crudded up, especially if your bike sat some over the winter.

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When you say "sputters at 2000 rpm" , are you referring to ANY time the engine is at 2000 rpm - meaning in Park, when you are just goosing the throttle, or in gear when you are accelerating, or at highway speed in high gear? If you are experiencing a "shuddering" in the engine at certain speeds/rpms - especially if these are speeds you regularly cruise at (long commutes at steady speeds), the problem could be in the Throttle Position Sensor (TPS). They have a tendency to wear unevenly if you drive a certain steady speeds. Eventually, the problem would progress to an engine code, but it may occur without setting the check engine light.

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Bike won't run past 4k rpm. Has pods and cut off exhaust.


Hi sounds like fuel air mixture problem due to the filter pods, as this type of machine relyes on the corre t intake of air to run correctly. When running whatch the throttle slides as you increase the throttle opening the slide should rise. If by placing your arm at the back of the carbs, if byreducing the air flow alows the engine speed to increase then you will have to rejet to suite

Oct 24, 2011 | 1980 Suzuki Gs 550 L

1 Answer

When i take off from a stop light my bike spits and sputter from 1000 rpm to 3500rpm when it reaches 4000 rpm it starts to clear up.


Hi, Rumblinstump and the usual suspects are:
1. Throttle cables misaligned or misrouted.
2. Damaged or restricted fuel tank venting system.
3. Intake system air leak.
4. Vacuum piston malfunction.
5. Pinholes or torn diaphragm.
6. Accelerator pump leaking or no output.
7. Plugged bowl vent or overflow.
8. Fuel level in bowl too low.
9. Restricted fuel supply passages.
10. Plugged jets or passages.
11. Worn or damaged needle or needle jet.
12. The enrichner valve not seated or leaking.
For more information about your issue and valuable "FREE" downloads that you will need please click on the links below. Good luck and have a nice day.
Low RPM Sputtering
bike sputtering on take off
1999 2002 Yamaha YZF R6 Service Manual R6 Moto Data Project
OEM parts for Yamaha
http://mybikemanuals.com/yamaha/yamaha-yz-owners-manuals

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1 Answer

Ninja 250r 08fi 9000rpm sputtering problem when i drive my ninja and the enginge is cold then there are no problems with getting to the rev limmiter but once my bike gets warm then it starts sputtering at...


so i drove my bike sputtering to school and notice that there werent problems with the fuel system cause i heard the engine drowning in the fuel cause the ignition system couldnt explode it by a to weak spark from the spark plugs, so i only had to change the spark plugs and everything was good as normal

sorry if my story writings look a bit weird, cause i dont speak or write english where i live

Mar 06, 2010 | 2008 kawasaki Ninja 250R

2 Answers

I just purchased a 94 Katana 750cc -- sort of a project bike. The bike has just under 13K miles and the previous owner stated that he had only put about 500 miles on it, in the last 2 years. When I first...


Sounds like it sat allot.. That causes problems with the carbs.. I would say it runs pretty good for sitting so much.. I would suspect the carbs need cleaning.. or maybe rebuilt,, jetted and synced.. Try some carb cleaner and work you way up from there..

Rate well ;o)

Jul 24, 2009 | 1994 Suzuki GSX-R 750 WR

2 Answers

SPUTTERING WHEN HOLDING 50-60 MPH


Since it ran fine before you "fixed" it, go back over the things you changed. Put the old spark plugs back in it. Double check all spark plug wires and ignition connections. Put the bike in a dark area and run it at night, can you see any arcing anywhere?

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1 Answer

GSX750FX running problem


needs the carbs cleaned out, and possibly some new spark plugs. If it has been over 4K since the plugs were changed, they need replacing also.

May 29, 2009 | 1999 Suzuki GSX 750 F (Katana)

1 Answer

GSX 600F idle and throttle probs


hi m8,, just a couple things,, wen u stripped the carbs down and cleaned them,, did u take the main jets and cold start jets,ie the jet that the needle in the carb sits in,, and poke the dirt out with a pin,, so u can see threw all the holes wen held to the light, u have a blockage still in the carbs,, undo bottoms of carbs take the main jet and the needle jet out ,,and clean ,, make sure your airbox is sealed down on the carbs and jubilee clips are tight,,,1 at a time pull off the spark plug cap and pull off the cap from its ht wire and snip a little bit off the end so u can see copper or brass stranded wire then screw cap back on ,do that to all 4 caps, do these checks ,the bike will run good, ,, look more in2 the carbs tho ,, its almost certain u have a bloked jet still

Jan 26, 2009 | 2000 Suzuki GSX 600 F (Katana)

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