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Recently put a spike air cleaner on my vstar 650 2014 custom, it dies on full throttle, so i asumi g i use the big hole jet i got with the kit.tho there is a big hole jet and a smaller hole jet..Do i

New air cleaner i put on my vstar 650 breaths more air so in theory id need to put a bigger jet in yeah? And also would i need to put a bigger jet in both of the carbys?

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Put a bigger jet in both carbs you will gain mass power

Posted on Feb 03, 2014


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Posted on Jan 02, 2017



  • 11 Answers

SOURCE: Carbies willn't set float level,right floods,left sets to low

I don't know if its any help but I've fixed my Honda with similar problem. It turns out I reassembled the rich carbys air cut off valve incorrectly. Have you checked yours? I'm wondering if the cut off valves somehow affect the other parts of the carbys. Mine is running sweet now.

Posted on Apr 24, 2009


  • 78 Answers

SOURCE: wot size are the jets on a standered 28mm carb .rs125cc

hi you may be better to try one size up at first then up one more as it may run better or worse make sure it dont run lean or it will burn a hole in the piston.... have you deristricted the ex pipe as taken the washer out of the down pipe
cheers jay

Posted on Jun 28, 2009

iain kelly

  • 311 Answers

SOURCE: Which size Jet Kit for 800 Vulcan Classic?

general rule of thumb is to go up about 10 jet sizes,unfortunately it is a bit of trial and error,and you may have to swap out diferrent sizes to get the bike running right,(jets are quite cheap though)but first step about 10 sizes from standard,your local dealer should be able to tell you what jets are in it and supply replacements,if you change to a hgh flow aftermarket air filter you may have to change jet sizes again as changing the filter may effect the mixture ratio in the carbs,,hope this helps

Posted on Jul 10, 2009


Ned C Cook

  • 3433 Answers

SOURCE: how to adjust carby

The air fuel ratio: start with screw all the way in, not tight, Then back out 1.5 turns. Set your idle then readjust the a/f ratio to get best, then readjust your idle. good luck

Posted on Jul 12, 2009


  • 562 Answers

SOURCE: backfiring through carby and exhaust

Sounds like the carby is flooding.

Have you had it off?

Try putting a new fuel shutoff valve and seat in.

Set the proper float level.

Make sure that the float does not have a hole in it that makes it sink.

Posted on Aug 19, 2009

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I did a full am detailed carb cleaning an tank cleaning as well as petcock cleaning bought new vaccum hoses an gas hose the bike is a 2000 kawasaki zrx 1100 it has 4 k&n airfilters installed it cranks an...

Lindsey... your problem is the classic issue with plugged jets. Specifically the low speed speed (pilot) jets are clogged. With the carb removed and the float bowl removed, and the float also removed, you'll see generally two sets of jets. Usually the one in the center is the main jet and has a larger hole and that jet doesn't usually clog but to be sure remove it and inspect the opening. If you can't see light then it's clogged. The more suspect issue is the pilot (low speed jet), usually off to the side. This jet, once removed has a longer body and this is the jet that is clogged. Perform the same "look thru" and you'll see no light or very little. When this jet clogs it displays the symptoms you mention. As you give the bike throttle, transition from idle thru low speed and then to main jet occurs, based on rpm and throttle demand. The pilot jet doesn't allow transition and the bike falters from about 2000 to 5/6 k rpm.

So how to clean. I've tried acetylene torch tip cleaners but most are too big. If you have an air compressor, try blowing high pressure air thru the jet and it may clear. The ultimate fall back is a chemical clean. Place the jet in a ultrasonic tank or purchase Berryman's carb cleaner in a small tank (1 gallon) (Auto Zone or internet)
and soak the jets in it. Here's another potential problem... the pilot hole in the body of the carb may also be plugged so while at it disassemble the soft parts from the carb and treat the carb body (no soft parts) also in the carb cleaner. Usually about 1 - 2 hrs soak removes the clog. Best to clean all holes in the carb body with high-pressure air. Since you have a four cylinder then you must perform the same exercise 4x. This will solve your problem...

Good Luck... Dio

Dec 28, 2014 | Motorcycles

1 Answer

1998 yamaha v star classic will only run on the choke

Hi, Anonymous and the usual suspects are:
1. Fuel cap or fuel tank is not venting properly.
2. Fuel filter clogged.
3. Fuel line pinched or kinked.
4. Float needle and seat sticking.
5. Float level too low.
6. Carburetor bowl vent line clogged/blocked/pinched.
7. Idle adjusting screw set too low.
8. Air/fuel mixture screw set too lean.
9. Idle port, transfer ports, slow air jet clogged.
10. Slow fuel jet clogged.
11. Faulty fuel pump.
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.
2004 Vstar idle only on full choke problem
98 00 Yamaha XV650 Star Service Manual XVS650 Moto Data Project
OEM parts for Yamaha
Yamaha star XVS650P Owner Manual

Btw, I’m available to help over the phone in case u need at

Jun 30, 2014 | 2006 Yamaha V Star 1100 Custom

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My masport 600st lawn mower wont stay running it appears to have a blockage in the fuel line. What action do I need to take to fix problem

you have a sticking float in the carburater you will have to get a carb kit for some carb cleaner any local auto store take off cleanit then let it soak in the cleaner 3 hrs hers the big you need a air compresser to blow air threw the carb little holes and big holes put it back to gather throw out gas install new gas and sea foam injecter cleaner 2 capsfull in the full tank you should be ready togo and have more power to

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1 Answer

Why would I have to re jet my 2002 Yamaha vstar 1100 custom?

Hi, Anonymous if you have changed your fuel delivery system, air filter size or flow rate, mufflers or exhaust system or a significant change in altitude your carburetors need re-tuning and if your fuel system (gas tank, filters, fuel valve and carburetor) is contaminated with ethanol sludge, varnish, rust, dirt, water etc. or your bike has been sitting for months or years without running these components must be "PROPERLY" cleaned and reassembled "CORRECTLY" before any adjustments can be made. Tuning your carburetor is fairly simple once you understand the basic principals. You engine is a simple airbox sucking air in and blowing it out, it is finely tuned at the factory for maximum performance once you upset that delicate balance by changing air filters, camshafts or exhaust systems your performance may go down the and the engine may run poorly, you need to compensate the air-fuel mixture in the carburetor in order for the engine to run smoothly and at peak performance. If you are running multi carburetors you need to sync them first and make sure your air cleaner element is clean and dry for paper elements or lightly oiled for foam and meshed elements and properly installed. Here is how and where you compensate trouble: "TIP" if your engine "BOGS" your not getting enough fuel.
1. Closed to 1/8 throttle is managed by the air screw and pilot/slow jet.
2. 1/8 to 1/4 throttle is managed by the air-screw, pilot/slow jet, and throttle slide.
3. 1/4 to 1/2 throttle is managed by the throttle slide and jet needle.
4. 1/2 to 3/4 throttle is managed by the jet needle, needle jet, main jet, and air jet.
5. 3/4 to wide open throttle is managed by the main jet and air jet.
6. Wide open throttle is managed by the main jet.
If you are running lean, spark plug electrode color is white, engine runs hot and feels like it is starving for fuel you need to go up on the jet size or move the c-clip down one notch. If you are running rich, spark plug color is black or dark gray, engine runs cool, and bogs down when accelerating you need to go down on jet size or move the c-clip up one notch. When your carburetor is properly tuned for maximum performance your spark plug electrode will be a light tan color like coffee with cream. If you prefer fuel economy over performance you can go down on main jet sizes until a satisfactory level of lower performance is acceptable versus MPH, your spark plug color will be whiter and your engine will run warmer. These tuning adjustments will only make improvements if your intake and exhaust system have no air leaks or sealing issues and the entire electrical system is in proper working order and you have no mechanical issues. For more information about your issue and valuable "FREE" downloads that you will need please click on the websites below. Good luck and have nice a day.
1100 Star rejetting how to
OEM parts for Yamaha

Btw, I’m available to help over the phone in case u need at

Apr 04, 2014 | 2002 Yamaha V Star 1100 Custom

1 Answer

Go Cart. Starts and runs only on full choke. 4 cycle, gas. Open choke, and engine dies. Sat for over a year. New gas, throttle working, spark ok. Can't find any air leak; carb never off of engine.

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1 Answer

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.

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