2001 Yamaha V Star 1100 Classic Logo
Posted on Mar 21, 2010
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03 vstar 1100 idles good runs bad under throttle. Changed plugs,cleaned carbs on bike.Pulled rubber diaphragm's cleaned with carb cleaner.Bike will turn over but will not fire off.New plugs fouled.Good Spark at plug caps,smell gas like flooded. not running.

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5 Related Answers

Anonymous

  • 1 Answer
  • Posted on Feb 12, 2009

SOURCE: Kawasaki Vulcan VN400 carb diaphragm broken

If you are really stapped on cash napa auto parts has some heavy duty rubber spray. Just spray a thin layer over both sides of the diaphragm to repair any holes/tears and let dry overnight. My diaphragm was going to cost over $110 for one. It will still have full function and be even stronger than stock!

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Anonymous

  • 9 Answers
  • Posted on Mar 12, 2009

SOURCE: 2005 yamaha yzf 250-unstable idle

I had the same problem, Turns out that my shims were finished, replace the chims and check clearences.

Anonymous

  • 51 Answers
  • Posted on Mar 22, 2009

SOURCE: Vstar 650 classic. only will idle.

hello and welcome
this is a very very commom problem after the cycle has gone over a storage period of anything over a month or so. what has happened is the deteriorated fuel has plugged the idle jet, and possibley other jetting. this is verified by pulling out the choke allows it to run. because this makes of for the loss of fuel the jets are not produceing. so to fix this you will need to remove the carbs and take out the jets and clean them thoroughly with a carb cleaner and possibly a very small gauge wire to break up builup. especially in the pilot jet. unfortunately fuel added carb cleaners dont seem to work for this kind of problem and to fix right they should be disassembled and cleaned thoroughly. thank you.

Anonymous

  • 53 Answers
  • Posted on Mar 29, 2009

SOURCE: rebuilt carbs-starts and idles but wont rev up without choke on

sounds like the main jets are partly pluged, you must remve all brass jets and seats including needle jet and its slide soak in carb cleaner and blow out with compressed air only.. hold up to bright light to verify if all are clean. jim

Anonymous

  • 298 Answers
  • Posted on Mar 29, 2009

SOURCE: engine idles fine, stalls soon as its given gas

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-

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Replaced throttle and idle cables and adjusted as needed. When the bike is started it will run while being choked but when throttle is applied bike bogs and coughs back through carb then dies.
It sounds like the slow speed jets or the accelerator pump is clogged up. Did the bike sit for an extended period of time? If so, you need to take the carb off and disassemble it. Then, clean out the jets and the fuel passages. This is not a job for an amateur as there are certain things that will go back together in either of two ways when only one way is correct. But, if you're mechanically inclined and you carefully lay the parts out in the way they came out, you can do this. Use a can of the pressurized carb cleaner to clean any gummy residue out of the carb.

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Aug 13, 2010 • 1980 Yamaha XS 400 Special
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Vstar 1100 idling rough and backfiring letting off the throttle
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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!
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Jun 09, 2010 • 2003 Yamaha V Star 1100 Classic
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May 27, 2009 • 2001 Yamaha V Star 1100 Classic
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Vstar 650 classic. only will idle.
hello and welcome
this is a very very commom problem after the cycle has gone over a storage period of anything over a month or so. what has happened is the deteriorated fuel has plugged the idle jet, and possibley other jetting. this is verified by pulling out the choke allows it to run. because this makes of for the loss of fuel the jets are not produceing. so to fix this you will need to remove the carbs and take out the jets and clean them thoroughly with a carb cleaner and possibly a very small gauge wire to break up builup. especially in the pilot jet. unfortunately fuel added carb cleaners dont seem to work for this kind of problem and to fix right they should be disassembled and cleaned thoroughly. thank you.
Read full answer
Mar 21, 2009 • 2004 Yamaha V Star 1100 Custom
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