Question about 2000 Yamaha V Star 1100 Custom

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I have an 05 v star 1100 custom that backfires alot and wont run with the choke off it also dogs down when i give it a little gas i have put sea foam in the gas but still has problem what else can i do to fix my problem?

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  • Yamaha Master
  • 1,508 Answers

Back fire,bogs down and choke required means it is lean.
Check fuel filter, fuel tap
intake air leaks, loose clamps, cracked rubber
vacumn hose off
valve clearance
loose jets in carb \dirt in carbs
part of a carb coming loose , like the top cap

The back fire can be because of carbon fouled plugs, caused by the choke on.
air intake leaks can sometimes be found by spraying WD around intake rubbers,while running and listening for engine change.
The rest is mainly visual inspection and adjusmnet

Posted on May 07, 2010

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I have a 2004 arctic cat dvx 400. Recently it got hard to start and backfiring. it will start and runs fine when it does, but if you let it set for any length of time, say 10 minutes or longer after u


Fill it up with premium gas, change the plugs, and run some sea foam through it. It will blow smoke after you add the sea foam and then clear up. That helps keep the varnish out of the carb (and unstick the choke etc.) and the high test gas will make it a lot easier to start and keep the plugs from fouling out as often. Also change/clean the air filter. This will give you optimal conditions for fuel air mixture and combustion. If you still have problems, go from there.

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Backfiring


Backfiring is a symptom of being too lean, not too rich. Clean your jets, synch the carbs and adjust the PMS.

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1 Answer

2000 Yamaha V Star 1100 Custom hard starting


Hi, Blair and the usual suspects are:
1. Enrichner system plugged, not properly functioning or improperly operated.
2. Fuel overflow line pinched or clogged.
3. Restricted fuel supply.
4. Gas cap and or fuel tank not venting properly.
5. Plugged slow jet or passages.
6. Inlet system air leak.
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.
http://www.starbikeforums.com/forums/49-v-star/839-2000-vstar-1100-custom-hard-start.html
https://sites.google.com/site/vstar1100kb/home/new-owner-must-do-list/using-the-choke
http://www.sloneservices.com/SilverBack/Other-Stuff/V-StarShopManual99-07.pdf
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Apr 21, 2017 | 2000 Yamaha V Star 1100 Custom

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My 2007 1100 wont stay running at low speed or idle without full choke


Idle jets are pluged up take off carbs and clean jets there are two jets in each carb put back together put some sea foam in gas tank It is a cleaner Get it at auto parts store Good luck MOPAR KENNY

May 21, 2011 | Yamaha V Star Classic Motorcycles

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Just started bike for the first time of the season...will only run while choked...if i try to throttle up it dies...06 vstar classic 3467 miles....is it the carbs needing rebuilt...if so is it a easy...


How old is the gas? Did you use fuel stabilizer? If not then add fresh fuel to tank as you use it and see if this clears your probelm. Also I would add 2 ounces of sea foam to each gallon of gas to help clean out system from old fuel.

Jan 31, 2011 | 2006 Yamaha V Star 1100 Classic

1 Answer

2006 Yamaha V Star 1100 Custom running rough and backfires


Hi, Mgoddard713 and the usual suspects are:
1. Severely discharged or a damaged battery should have 12.5 volts or more and be able to pass a proper "LOAD" test if necessary, you may have a preliminary reading of 12.5 volts or more but little or zero amperage the battery is faulty and must be replaced, AGM batteries fail in this scenario more so than lead acid batteries.
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. Faulty main circuit breaker and or connections.
4. Faulty ignition coil and or connections.
5. Faulty spark plug, oil or gas fouled, wrong heat range or service type, wrong gap, loose in the cylinder head, broken electrode or insulator.
6. Faulty spark plug cables, leaking or broken, internal damage check for spark leakage in the dark.
7. Faulty ignition module, switch, CKP, MAP, CMP, sensor and or any connector in the ignition circuit could have corroded, loose, or broken pins/sockets
8. Burnt exhaust valve or air leak in the exhaust system.
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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Dec 28, 2010 | 2006 Yamaha V Star 1100 Custom

2 Answers

Vstar 1100 idling rough and backfiring letting off the throttle


It sounds to me that your carbs might be a little gunked up - you mentioned the gas may have been old, so it's possible that the smaller (idle) jets are slightly plugged up. Fresh fuel might do the trick and/or you could try using a fuel system cleaner and water remover. This problem might 'solve itself' with a little time.

As far as the backfire - this might be either from the carb issue or it could be related to that rattle you mentioned - you could have a loose connection at or near the head - this can **** air and cause a backfire.

I hope this helped!

Jun 09, 2010 | 2003 Yamaha V Star 1100 Classic

1 Answer

05 1100 shadow, does not idle right. runs great on road.


Try putting some Sea Foam additive in the gas . Let it idle for a few minuets, then go for a nice long ride.
Sea Foam can be found at your NAPA dealer or Wal-Mart. Be careful not to add to much. Follow the directions.

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2 Answers

Yamaha V-Star 1100 backfires and will not run without choke on


Here are two solutions for you:
A - Take the carberator off and soak it in some good quality carb cleaner for about 1/2 an hour.  That should take care of any residue in the carbs.
B - Alternatively (and for the less technical minded) there is a great product called Sea Foam.  Try to find it at your local CSK auto/NAPA/Wal-Mart.  Pour a small amount (maybe 1/4 ounce) into each cylinder chamber (take out the spark plugs), try to pour a small amount into the carbs (a turkey baster works great for this), and pour the rest into the gas tank.  Let it sit for 5-10 minutes, then start it up.  *NOTE - the bike will start VERY hard at first until it burns through what's in the cylinders.  ALSO the fumes will be EXTREMELY strong and suffocating - make sure you do this OUTDOORS preferably, or at least in a VERY well ventilated area.
Good luck - I know how frustrating these things can be! :)
P.S. - I am a proud owner of a V-Star 1300 - great bikes! :)

May 26, 2009 | 2006 Yamaha V Star 1100 Custom

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