Why are my carburetors not working on my motorcycle?
Fixing Lean Mixtures. This condition is generally caused by the incorrect fitting of after-market accessories such as exhaust systems, air filter systems, or replacement carburetors of a different type or size. In addition, if the fuel level in the float chamber is set too low, insufficient fuel will be drawn through the main jet.
Where to find answers to Yamaha outboard problems?
From outboard engine and electrical and electronics systems to engine and alarm issues, tilt and trim issues, this is the place to find information. So where do you start? There is a lot to know. I get asked regularly about what is the problem, and more importantly and how to fix a problem.
When to know if your carburetor is running lean?
Before attempting to fix a carburetor problem on your motorcycle, you need to come up with the correct diagnosis. When a carburetor is running lean, the fuel-to-air ratio is off because the carburetor is delivering too much air. Typical symptoms of a lean mixture are:
What are the symptoms of a too rich carburetor?
Too Rich. When a vehicle is running rich, the fuel-to-air ratio is off because the carburetor is delivering too much gasoline. Typical symptoms of a rich mixture are: Poor fuel economy. Sluggish acceleration. Choke not needed from cold starts. Sooty or black spark plugs.
How to clean and rebuild Yamaha 90 outboard carb?
Step 1. Thoroughly clean the carburetor with contact/brake cleaner. PRO TIP: Removing as much dirt and debris as possible will minimize the chance of debris entering the carburetors when they are disassembled. Step 2. Remove the four screws and the float chamber from the underside of the carburetor.
What’s the best way to synchronize carburettors on a motorcycle?
There are a couple of methods you can use: the vacuum gauge method (generally how it’s done in a motorcycle shop) and the ball-bearing method. If you have vacuum gauges, try that approach, and if you don’t, opt for the ball-bearing method. Make sure your carbs are clean and in perfect working order.
Where is throttle linkage on Yamaha 90 outboard carb?
Remove the carburetor throttle linkage from the right side of the carburetor assembly. The linkage is held in place by three pop-pins, and can be removed simply by pulling it away from the carbs. Step 5. Remove the six bolts from the bracket that hold the carburetors to the intake manifold.
How many carburetors does a Yamaha b90tlrx have?
NOTE: The Yamaha B90TLRX has three carburetors, so you’ll have to get three carburetor repair kits. You can purchase OEM Yamaha carburetor parts individually, but it’s cheaper to get the complete Yamaha carburetor repair kit that includes everything you need for this job.
What are the symptoms of too much gasoline in a carburetor?
When a vehicle is running rich, the fuel-to-air ratio is off because the carburetor is delivering too much gasoline. Typical symptoms of a rich mixture are: Poor fuel economy. Sluggish acceleration. Choke not needed from cold starts. Sooty or black spark plugs. Sooty or black muffler end pipes.
Why does my carburetor go off when I run a rich mixture?
When a vehicle is running rich, the fuel-to-air ratio is off because the carburetor is delivering too much gasoline. Typical symptoms of a rich mixture are:
How to troubleshoot no fuel going to a carburetor?
Remove and check all fuel filters located in the fuel line and in the carburetor. Replace any and all filters that can not be confirmed good or have not been changed recently. Inspect the fuel lines for leaks or kinks that might interfere with fuel flow.
What to do if your fuel pump is not working?
To make sure you’re vacuum operated fuel pump is working correctly, pull the vacuum line to the fuel pump off and crank the engine. You should feel a good amount of suction at the mouth of the carb. The engine crates a vacuum pulse to the fuel pump, which in turn creates an amount of pressure that pushes fuel into the carburetor.
When a vehicle is running rich, the fuel-to-air ratio is off because the carburetor is delivering too much gasoline. Typical symptoms of a rich mixture are: Poor fuel economy. Sluggish acceleration. Choke not needed from cold starts. Sooty or black spark plugs. Sooty or black muffler end pipes.
When a vehicle is running rich, the fuel-to-air ratio is off because the carburetor is delivering too much gasoline. Typical symptoms of a rich mixture are:
What causes a carburetor problem on a motorcycle?
John Glimmerveen is a former competitive motorcycle racer. He later worked as a race technician for several international race teams. Carburetor problems generally fall into three areas: too lean a mixture, too rich a mixture, or an incorrect adjustment.
Too Rich. When a vehicle is running rich, the fuel-to-air ratio is off because the carburetor is delivering too much gasoline. Typical symptoms of a rich mixture are: Poor fuel economy. Sluggish acceleration. Choke not needed from cold starts. Sooty or black spark plugs.
Before attempting to fix a carburetor problem on your motorcycle, you need to come up with the correct diagnosis. When a carburetor is running lean, the fuel-to-air ratio is off because the carburetor is delivering too much air. Typical symptoms of a lean mixture are:
What should I do if my carburetor is not working?
Turning this screw clockwise will reduce the amount of air entering the carburetor, and will, therefore, richen the mixture (refer to a shop manual for correct settings).
Why are my carburetor parts changing their positions?
With the inherent vibration of all engines, carburetor parts—primarily adjusting screws—tend to rotate, and therefore change their positions. Low-speed running jets and multicylinder balancing screws are the items most prone to self-adjust during normal operation and often require periodic corrections.
Why are the 2-3 cylinders on my CB750 not firing?
99% of the time if 2-3 are not firing and the plugs are dry then it’s low fuel level in the carb bowls due to slow fuel delivery from the petcock which can effect any carb (s) randomly…… IMHO. If your sure it’s an ignition problem; it’s carbs….
Are there any problems with Honda GL1100 carb?
Another problem you may come into when working with GL1100 carburetors is dealing with idle mixture screws that seem to be super glued into the carburetor bodies. They don’t always come out as easily as the GL1000 carb idle mixture screws do.
How can you tell if you have a carburetor problem?
Luckily there are telltale symptoms that will tell you which problem you’re dealing with. Carburetors are relatively simple devices. Their primary function is to deliver the right amount of fuel/air mixture at a given throttle opening (as selected by the rider).
What was the first year of the CB550K?
The CB550K was introduced in 1974 as an update to the CB500 in the US market. The models were cosmetically similar; mechanically, aside from the extra 50cc displacement, significant improvements in the transmission. The 1974 CB550K was offered in three colors: Flake Sunrise Orange, Boss Maroon Metallic, and Freedom Green Metallic.
What kind of engine does a 1974 Honda CB 550 have?
1974 Honda Cb 550, Honda, CB550 Four, excellent condition, New tires, battery, fuel valve & frt brakes. Just rebuilt carbs. Fairing & windshield.
What was the last year of the Honda CB500?
Later the engine was increased in size to make the CB550K (K0 – K2 from 1974-1976) and its sportier variant, the CB550F Super Sport (1975-1977). The final variant of the family is the CB550K3 / K4 (1977-1978). For Honda CB500 & CB550 Technical Information, Support Guides and Factory Manuals view our knowledge base.
What kind of parts are in a Honda CB500?
The parts in the categories below are designed to fit the four (4) cylinder single overhead cam Honda 498cc and 544cc family of motorcycles. These are considered the “mid sized” fours produced by Honda from 1971 to 1977. There are a few variants in this family of bikes, starting with the CB500K (K0 – K2 variations from 1971-1973).