20 Most Recent 2004 Yamaha V Star 1100 Custom Questions & Answers


Is the idle speed set too low? If so, adjust it, using the idle speed adjusting screw, to the correct idle speed (900 RPM). If that's not the problem, then check for air leaks between the carburetors and the engine by spraying WD-40 around the intake manifolds with the engine running. If there is an intake leak, the engine RPM will change briefly when the WD-40 is sprayed near it.
Aside from that, there are two other things that can cause your engine to die when it should be idling: the idle speed mixture adjustment, or low cylinder compression. Of course, if it was idling fine before, and the idle mixture adjustment hasn't been changed, then do a compression check, first. To idle properly, each cylinder's compression needs to be at least 140 psi.

2004 Yamaha V... | Answered on May 21, 2019


Hi, Anonymous and the usual suspects are:
1. Faulty wiring to any safety switch.
2. Safety switches loose at the mounting point.
3. Faulty kickstand safety switch.
4. Failed kickstand safety switch circuit diode.
5. Stretched side stand spring.
6. Side stand not coming up far enough to disengage switch.
7. Faulty clutch lever safety switch.
8. Faulty neutral safety switch.
9. Clutch not properly adjusted.
10. Clutch plates sticking, forward lurch
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2004 Yamaha V... | Answered on Dec 07, 2017


Hi, Prvtpilot199 and the usual suspects are:
1. Throttle cables improperly adjusted, pinched or need lubrication.
2. Idle adjusting screw needs to be backed off.
4. Air fuel mixture adjusted too lean start with 2 full turns.
5. Intake system air leak.
6. Fast idle choke ramp is not releasing.
7. Broken throttle return spring.
8. Damaged diaphragm or slide.
9. Faulty MAP, TPS, ATS, O2, sensors or wiring/connector
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2004 Yamaha V... | Answered on May 28, 2017


Hi, Byrd1998 you may have a broken universal joint for this scenario you will need your service/owners manual if you can't find the 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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2004 Yamaha V... | Answered on May 28, 2017


Hi, Patwhite64
COUGHING is usually caused by an air leak in the intake system and will generally have the same telltale signs, a wet or damp buildup of oil/gas seepage at the intake manifold to cylinder head or carburetor to intake manifold connection and in rare instances a worn throttle plate shaft and or seals.
POPPING or backfiring on deceleration is usually caused by a lean fuel condition or an air leak in the exhaust system and is generally located where black carbon soot is seen as a flashing build up from any joint connection. This condition can easily be remedied by removing and cleaning both joint pieces and reassembling with high temp silicone and torquing the exhaust clamp to the proper spec.
SPITTING is usually caused by a faulty accelerator pump and or nozzle, or the float bowl needle and seat leaking and overflowing through the main jet mixing well nozzle, or the air-fuel mixture screw is adjusted too lean.
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2004 Yamaha V... | Answered on May 13, 2017


Hi, Goran 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.
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2004 Yamaha V... | Answered on May 08, 2017


Hi, Todd 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 links below. Good luck and have a nice day.
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2004 Yamaha V... | Answered on Feb 03, 2017


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2004 Yamaha V... | Answered on Nov 21, 2016


Hi, Anonymous it should be noted that in order to "PROPERLY" diagnosis any electric starter issue it is "IMPERATIVE" that you begin with a fully charged battery 12.5 volts or better and be able to pass a proper load test, and the usual suspects are:
1. Battery terminals have loose or corroded connections.
2. Battery cables faulty due corroded or broken internal wiring at the cable connector especially the "NEGATIVE" cable which needs to be checked at "BOTH" ends.
3. Battery voltage, must be 12.5 volts or better, voltage from the battery to the main circuit breaker to the ignition switch to the security/ignition fuse to the TSM/TSSM module to the engine stop/run switch to the starter button to the starter relay to the green wire that connects to the starter solenoid can not drop more than 1/2 volt of battery voltage.
4. With a voltmeter connected to the battery, the ignition switch in the on position, the kill switch in the run position, the starter button depressed, starter engagement should not bring voltage below 8-9 volts.
If a lower voltage is produced a proper battery load test should be performed with a load tester to validate battery integrity or battery replacement.
5. Faulty starter relay, check continuity.
6. Faulty starter solenoid, check contact plate and shoes for excessive electrical erosion/etching, refurbish as necessary or invert contact plate and use the virgin backside. Check contact shoes for being loose. Replace solenoid if the negative function is still a final outcome.
7. Faulty starter, bench test starter with a 12-volt battery if negative function check, decontaminate and undercut armature commutator segments as necessary, check segments with an ohmmeter probe each one and the segment next to it for shorts. Have the armature tested with a growler and field coils, and brush plate with an ohm-meter for opens, shorts or grounds. Replace brushes if less than .438" It is generally cheaper to overhaul/refurbish a starter motor than buy a new one.
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2004 Yamaha V... | Answered on Nov 15, 2016


Check the pesky fuel filter, or the carb for trash in the float bowl

2004 Yamaha V... | Answered on Sep 15, 2013


2004 V Star 1100 Custom, It has been sitting for several months, Bike starts and runs, It just Idles out of control when it is warmed up. ??? Any Sugestions ??

2004 Yamaha V... | Answered on Aug 19, 2013


Hi there!

Open up the carb and clean the jets with pressurized air. I also suspect water on the carburetor reservoir, before opening the carb, drain it first then run. Also, make sure the plugs are clean. Pull on the choke when twisting the accelerator, if it accelerates well, then warm the beast at normal temperature first before twisting the throttle hard again.

hope this helps-
levibit-

2004 Yamaha V... | Answered on May 20, 2012


If your battery is working well, You've got problem with either solenoid or starter motor.When you press the starter button, you should hear 'click' sound of solenoid, if not problem is in your solenoid ( I suggest for replacement). If there is 'click' sound but your bike will not crank, the problem is your starter motor. Now you need to check your carbon brush. Replace it with new one if you encountered abnormality.

2004 Yamaha V... | Answered on Aug 19, 2010


The fuel petcock (on/off tap) has a rubber pad that the metal plate rests on against underside of tank. This has more than likely perished and become hard and brittle. Drain remaining fuel (if any) and remove the fuel hose and remove petcock retaining bolts. Carefully remove petcock as two fuel tube filters extend into tank. Replace the rubber pad with a new one. Might be a good idea to thoroughly check for cracking on all rubber components on the bike, especially fuel hose and brake fluid lines. Cheers.

2004 Yamaha V... | Answered on May 17, 2010


If the leak is from the tank, check the gas line from the fuel petcock. If it turns out to be from the left carb, drain the bowl, it should free the float.

2004 Yamaha V... | Answered on May 12, 2010


If you do not know what you have done, well best way is to get it to a shop and have the professionals do the job.

2004 Yamaha V... | Answered on Mar 23, 2010


carbs. need to be adjusted

2004 Yamaha V... | Answered on Apr 18, 2009


The main breaker panel is on the left side under the cover where the tool kit is located and the key opens it.

2004 Yamaha V... | Answered on Apr 04, 2009


something to keep in mind. if the fuel filter appears to be empty, this may not always mean that the fuel system is running dry. if you bike runs fine i wouldnt worry about it. usually an air pocket makes its way into the filter and still allows fuel to flow. but if you are running into a fuel starveing problem. cutting out. ect. then after elimintateing the other possibilities you have listed you will want to check the carb venting tubes. if the float chambers are not getting proper venting from a pinched line or something then it will not allow fuel in as adequate as it should, and will cause running problems. or if this is something that occured after a storage period a sticking float valve can alter fuel flow as well. and last, if this tank has venting lines then you willl want to check them as well. venting problems can be tricky to find but they are a common cause of fuel starve problems.

2004 Yamaha V... | Answered on Mar 27, 2009

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