Question about 2006 Yamaha Royal Star Venture

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It is starved for fuel but only sometimes. It acts like vapor lock and will happen at anytime from just starting a cold engine or after it is warm and driving down the road. It seems to start after a while of letting it sit.

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  • Yamaha Master
  • 43,836 Answers

Hi, Jaarmstrong2 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.
Royal Star Venture and Tour Deluxe Forum
06 RSV Won Run
OEM parts for Yamaha

Posted on Apr 13, 2016


6 Suggested Answers

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Posted on Jan 02, 2017

  • 6966 Answers

SOURCE: fuel drain tube...i think


The fuel overflow is a normal reaction when you run out of fuel. The float partially got stuck in the open position allowing the fuel to fill the bowl . Being stuck, the float will not push on the closing valve to cutoff the supply, hence the overflow. A temporary workaround is to jar the float by tapping solidly on the bottom of the carb bowl where the drain screw is housed. This idea is to jar the floats to move up and close the valves.

In some instances, it is possible that dirt/sand/debris might have past trough the filtering system and block/clog or prevent the closing of the flow valve even if the floats are operating normally. These dirt/sand/debris would have been sitting peacefully at the bottom of the tank but has been agitated and made to flow with the last few fuel left.

of course, the correct action would be to dis-assemble and perform checking/cleaning of the carbs and its associated components/parts.

Just a start, do postback how things turned up or should you need additional information. Good luck and Thank you for using FixYa.

Posted on Nov 18, 2008

  • 3567 Answers

SOURCE: Starting The Bike On A Cold Morning

Try putting in new, stock spark plugs. Check and possibly replace the air filter. Charge the battery. Get the bike running then check the battery voltage at 2000 rpm. It should show 14volts or more. If not, get the charging system checked. Get a can of starting spray (for future problems).

Get the compression checked. Your bike is 21 years old and I will bet that the valves are needing to be reseated. Check the valve clearances with a cold engine and reset valve clearances as needed. Check the area where the head contacts th cylinder. Any mist of an oil stain? Tighten the head or replace the head gasket. If replacing the gasket, now is the time to have the shop lap re-seat the valves. Have them sync and balance the carbs as well. Your bike will now have its' manners back and show you the dedication it should.

Posted on May 29, 2009

  • 1 Answer

SOURCE: Engine dies after quad is warmed up (10-15 minutes)

Just a hunch, had this happen to a bike of mine years ago, could be the piston rings are gettting ready to go(wore down). What happens is when the quad is cold the rings expand tight into the cylinder walls allowing it to get full compression and run ok. When it heats up they shrink allowing the slightest amount of give which in turn will cause you problems similar to what your describing.

Posted on Jun 10, 2009

  • 8 Answers

SOURCE: r1 been sitting around for about a year ,starting

change fuel, change filter, if still happens get professional to check idle .

Posted on Nov 01, 2010

  • 18 Answers

SOURCE: I have a 2001 Road Star 1670 cc. I was riding the

This is just a shot in the wind but it is possible when it gets hot the Engine Control Module or Ignition Control Module, which ever your bike has, has an open circuit in it when you heat a module up everything expands and could cause circuits to be open when they would be closed when the are cold. I have seen it before in alot of different kind of vehicles not just motorcycles. But that is my professional opinion it is possible it could be something totally different though that is the bad thing about being a Technician. If you have any more question please let me know and leave good feed back please.

Posted on Jun 23, 2011

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