Question about 2005 Yamaha Road Star Midnight Silverado

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I have a 2005 Road Star Silverado and it seems like the timing is retarted at low rpm, because it intermitently coughs when i blip the throttle, sometimes it dies. I have checked and the accelrator pump works fine. Does the TPS sensor have something to do with timing adjustment?

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  • Yamaha Master
  • 44,879 Answers

Hi, Rempelabe if your carburetor/exhaust is:
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 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.
BACKFIRING is usually caused by a sticky/tight intake valve or a timing issue, 180 degrees out or cam chain off 1or 2 teeth.
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.
How To Adjust the Accelerator Pump
http://roadstarclinic.com/component/option,com_fireboard/Itemid,187/func,view/id,10464/view,flat/catid,13
Yamaha XV1700P Service Manual
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Posted on Jun 05, 2017

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6 Suggested Answers

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  • 2 Answers

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Posted on Jan 02, 2017

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TLRogue
  • 99 Answers

SOURCE: 2005 650 V star won't idle

i would say its either drawing air or the carbs need setup. You have to check the breather pipes and the rubber manifolds for cracks or splits.
if carbs need setup, then its best taking it to a good garage, to have them balanced and adjusted.

TL

Posted on Feb 12, 2009

RJones1125
  • 373 Answers

SOURCE: I have a 2003 V Star 1100 custom. Great bike but

carbs. need to be adjusted

Posted on Feb 22, 2009

smitha43
  • 9 Answers

SOURCE: engine stutters when turned on

To adjust the throttle position sensor, switch ignition 'on' then disconnect and reconnect the the connection at the TPS. Loosen the TPS fixing screws  x2 and swivel the sensor until the rev counter reads 5000rpm.Don't switch the ignition 'off' during the procedure as this sets it back into 'normal' mode. If you can't get a proper reading then it could be the sensor is faulty.   The TPS is on the left hand carb spindle.

Posted on Mar 06, 2009

  • 71 Answers

SOURCE: Yr 2000 thundercat, won't idle unless choke fully on

First thing I would try is some sea foam, you can get it pretty much at any auto parts store...put it in the tank per instructions on the bottle, if the carbs are gummed/dirty... seafoam is you best hope at getting them clean without pulling them.

If sea foam doesnt work, you'll have to yank the carbs, but before you do... pull the tank, set it backwards where the seat was, get about a two foot fuel line (air line works just fine) run it ti the tank and start the bike, take a can of starting fluid (WD 40 works too but stinks when it starts to burn off afterwards) and spray around the base of the outside of the carbs where the boots connect it to the intake, if the engibe revs, you have a leak...cracked boot probably.

If no leaks are detected... then yank the carbs, pull the bowl covers and start cleaning....also, while you have them off pull the slide covers off and check the diaphrams on the needle for rips or cracks as well.

Check/clean.. put everything back together... if it still isnt running right then I have no other suggestions... certainly sounds like an air/fuel problem... if were anything else choking it wouldn't make it better.

Posted on Jul 10, 2009

  • 99 Answers

SOURCE: 2005 v star 1100 stalls

this is just your idle adjustment. all you have to do is let the engine warm up to operating temp., then raise the idle. you may need to remove your air intake and filter to get to the adjusting screws. they are usually on the side of the carburetor, right in the center. they may be somewhere else though. some carb's have a cable mounted near the carb to adjust the idel. im not familiar with your specific model. but once you determine where the idle screw(s) are, turn them in clockwise with the engine running. go about 1/4 turn at a time until it will stay running without having to give it throttle.

Posted on Aug 05, 2009

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