Question about 2003 Yamaha V Star 1100 Classic

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My vstar 1100 is sputtering and missing a little when running at a low RPM. When I give it gas it takes off fine. I have a new fuel filter, spark plugs and the carb was recently cleaned. Would a ignition coil be one solution??

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  • Yamaha Master
  • 43,120 Answers

Hi, Stevebgis 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.
2. Check battery terminals for damage or corrosion, check the battery cables at "BOTH" ends for loose, corroded, or broken connectors, "INSIDE" and outside the cable harness, perform connector wiggle test and check cables with an ohmmeter if necessary.
3. Spark plugs in bad condition or partially fouled.
4. Spark plug cables in bad condition and leaking.
5. Spark plug gap too close or too wide.
6. Faulty ignition coil, module, and or sensor.
7. Loose, dirty, or corroded ignition module connector at crankcase.
8. Faulty CKP or CMP, MAP, ETS, ATS, TPS, O2 sensor.
9. Intake air leak.
10. Water, dirt, or rust in the fuel system, carburetor and/or filter.
11. Fuel tank vent system plugged or carburetor vent line closed off.
12. Vacuum line from intake manifold to fuel valve is broken, cracked, pinched, or missing.
13. Carburetor controls misadjusted.
14. Damaged carburetor.
15. Incorrect valve timing.
16. Weak or broken valve springs.
17. Damaged intake or exhaust valve.
For more information about your issue and valuable "FREE" downloads that you will need please click on the links below. Good luck and have nice a day.
http://www.starbikeforums.com/forums/49-v-star/9084-v-star-acting-very-sluggish-sputtering.html
Motorcycle Message Board Motorcycle USA
http://www.sloneservices.com/SilverBack/Other-Stuff/V-StarShopManual99-07.pdf
OEM parts for Yamaha
http://www.starmotorcycles.com/assets/service/manuals/2000/LIT-11626-13-36_96.pdf

Posted on May 26, 2016

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Posted on Jan 02, 2017

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SOURCE: 2001 yamaha Grizzy 600 not getting gas

Hi Daniel,
Check the ignition coils.

Knight. (yamaha seca XJ750A 1981)

Posted on Feb 12, 2009

  • 52 Answers

SOURCE: at speedes of 110-120 starts to loose power

Is it all stock or have you added a pipe or a hi performance air filter? If you have, it needs bigger main jets, if not try cleaning out the filter in the gas tank and screen in the petcock, if it has one

Posted on Jun 18, 2009

dgfisher2004
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SOURCE: where is the spark plugs located

Your plugs are in the top of the heads. Either in the center or in just offset from center leaning outward.

Posted on Jun 30, 2009

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SOURCE: 87 shadow 1100 missing up in the high rpm

is the bike standard? because if you have replaced the exhaust system withan after market one,the carbs will be running to lean and you will havt to go up in main jet sizes

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SOURCE: My 1100 Vstar back fires, and runs sluggish

is it carbed or injection buddy

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1 Answer

2002 v star 1100 wont rev over 3000 rpms sputters and runs like is not getting fuel


Could be that's exactly the problem. I'd check the fuel filter first, cars with fuel filter problems often only exhibit problems like this by saying they can only go Xmph, and not over. While the filter may not be clogged enough to keep the car from running, a 13 year old car can through condensation develop rust in the tank, which could not only foul the filter, but foul it continuously after replacement. I once solved the problem with my motorhome by introducing a huge cannister filter, with a magnet to trap the rust, and a smaller fine filter just before the carburetor so I could tell the gas was flowing and the big cannister needed replacing if the flow diminished.

Other problems that may cause the same issue are timing problems, though most of those have gone the way of old spark gaps, and timing belts that need adjustment. But, if your car's timing works like the older cars, having the timing retarded or advanced could change the cycle just enough that it doesn't want to run right, the fuel just doesn't get enough time to burn completely, or begins to foul the plugs.

Another more modern problem is the coil, while capable of producing enough spark at low speeds, low rpm and therefore low gasoline consumption, boost the rpm, the speed, and push down on the gas and suddenly there's not enough juice to burn all of the gas, and the car coughs, sputters and behaves like it has no power.

Hope this helps!

Sep 03, 2015 | Cars & Trucks

1 Answer

My 1998 tj jeep is hard to start, i replaced fuel pump because the filter had come off the end of it. and replaced the crank position sensor because i got a code po320 It ran fine for a while and then...


try to give it a little more gas it sputters an back fires! In the first place your not giving it more gas unless it running ! If just cranking all your doing is letting more air in . Your vehicle has electronic fuel injection , not a carbuerator . Till the computer see's a RPM over 300 rpm , it's going by programming installed in the PCM - engine computer . It sputters an back fires because of a lean condition , low fuel . When starting a fuel injection engine you don't touch the throttle pedal . And if you were to push it to the floor and hold it , the computer goes into clear flood mode. If the vehicle were flooded that is what you would want to do .
P0320 OBD II Trouble Code
You may have O2 sensor problem or a map sensor or coolant temp . sensor . Your best take it an have a qualifiedd repair shop diagnose it .

Apr 27, 2017 | Cars & Trucks

1 Answer

My 2007 yamaha vstar 1100 seems to be getting too much air and not enough gas to stay running what can I do?


Hi, Anonymous it should be noted I am not allowed to use the word "SCR*W" as Fixya considers it profane. The carburetor throttle shaft wheel has two cables the cable closest to the right side of the bike is the throttle cable and the one closest to the left side is the idle cable. Right about the middle between the two is the idle adjustment bolt. It faces out towards the air filter end of the carb . The engine should be at operating temperature with the enrichener off to set the idle between 950-1050 rpm. Turn the bolt clockwise to increases idle speed and counterclockwise to decrease idle speed. If you have access to your air fuel mixture bolt you may adjust it as well if not there is a video below on how to gain access, make sure you start with clean or new spark plugs. Gently turn the bolt clockwise until it starts to bottom out "STOP" do not over tighten as it will damage the taper on the bolt, now back it out 2 full turns to establish a starting point start the engine and check the idle rpm's and adjust the idle bolt accordingly for 950-1050 rpm if necessary, adjust the A/F mixture bolt 1/4 turn at a time and let the engine settle for about 10 seconds, clockwise for a leaner mixture and counterclockwise for a richer mixture you are seeking the highest rpm your A/F bolt can acquire without going past 3 full turns from bottom then readjusting the idle bolt back down to 950-1050 rpm If you can not detect any rpm change and can not stall the engine by turning the A/F bolt all the way in then your pilot/low-speed jet is too big. Final adjustment should be made with a clean air filter mounted to the carburetor. For more information about your issue and valuable "FREE" downloads that you will need please click on the links below. Good luck and have nice a day. Pilot Mixture Screws Star 1100 Wiki Knowledge Base
Dialing in the PMS screw VSTAR 1100
http://www.sloneservices.com/SilverBack/Other-Stuff/V-StarShopManual99-07.pdf
OEM parts for Suzuki
http://www.starmotorcycles.com/assets/service/manuals/2000/LIT-11626-13-36_96.pdf

Jan 19, 2012 | 2007 Yamaha V Star 1100 Classic

1 Answer

I have a '03 vstar 1100 classic that i just bought. it was running fine untill two days ago it cut out on me while i was riding, i restarted it but every time i gave it throttle it died untill it...


Hi, Olsoner0509 the following applies to carbureted also fuel injected models 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.
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, 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. The gas cap is not venting properly or fuel tank venting system blocked.
15. A failed fuel pump, pressure regulator and or fuel injectors.
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 links below. Good luck and have a nice day.
Star 1100 stalls when riding
http://www.starbikeforums.com/forums/49-v-star/3252-vstar-1100-starts-but-only-runs-few-seconds-cuts-out.html
http://www.sloneservices.com/SilverBack/Other-Stuff/V-StarShopManual99-07.pdf
OEM parts for Yamaha
http://www.sloneservices.com/SilverBack/Other-Stuff/V-StarOwner%20Manual.pdf

Aug 21, 2011 | 2003 Yamaha V Star 1100 Classic

1 Answer

My 98 Saab 900s started to sputter a few days ago. I put new spark plugs, dist. cap and rotor. The air intake is clear and the hose has no cracks. It still sputters in low rpm at idle and when driving it...


change your fuel filter and check the fuel pressure on the fuel pump you may have gotten some bad fuel try some STP gas treatment make sure you have a half tank of gas and add a little more go somewhere you can drive 55MPH give these websites a try www.alldatadiy.com and www.autozone.com wish you the best of luck Michigan Man.

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1 Answer

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mine did the same, I found out that the high speed jet was clogged, I pulled the fuel line off the filtor(going to the carb), stuck the line into a mixture of half gas half carb cleaner, I fanned it up and in 2 or 3 minutes it started running well, hope this helps.

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replace the fuel filter and if that doesnt help replace the fuelpressure regulator !!!
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