WR450 08,after a dusty ride carby always has dirt in the bottom. Some times this has entered the jets and caused erratic or no idle. The air cleaner is always cleaned and oiled, and there is no sign of dust entering here. Any suggestions please
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need. goodluck!
- If you need clarification, ask it in the comment box above.
- Better answers use proper spelling and grammar.
- Provide details, support with references or personal experience.
Tell us some more! Your answer needs to include more details to help people.You can't post answers that contain an email address.Please enter a valid email address.The email address entered is already associated to an account.Login to postPlease use English characters only.
Tip: The max point reward for answering a question is 15.
If you have a fuel bowl on the bottom of the carb remove it and clean all the dirt out of it and clean the fuel jet also. The jet being plugged will not let gas into the engine. I find a lot of issues with dirty fuel bowls and jets. I use a real fine wire for the jets but an air compressor works better as well. The jet usually is the bolt that holds the bowl on.
Sounds like main jet is blocked or the float seat is jammed or stuck this can happen for two main reasons 1)leaving fuel for extended periods eg winter break 2) water in fuel Exploded diagram of carbie will help. Normally you would remove fuel bowl from bottom of carbie this is either clipped or screw in center of bowl . the gasket can hold bowl in position a gentle tap gets it off. the jet is normally screwed in to the same piece of casting as the screw for the bowl and is removed by a slot head screwdriver Note when sticking screwdriver up hole make sure it is small enough so it does not damage thread inside casting remove jet and clean with a fine wire or a jet cleaner.( they can be bought from a camping supply store ) then screw back in. The float is held in by a loose pin, when the bowl is off the pin can be removed, the float will fall off and so will the seat so be careful. the seat is small and is loosely attached to the float but will not stay connected to it.clean the seat and reassemble. Best to be done by removing carbie and placing on clean bench.Only some times can it be done in position. PS this is the same for most small engine. If you turn fuel off and run engine dry as apposed to turning off the ignition for long breaks this problem will tend not to happen
sounds like dirty carb jet. most pressure washers sit for long periods of time and many have the jet in the bottom of bowl where dirt and grime collect. depending on the model the bottom screw holding on the carb bowl is the jet. clamp or turn off the fuel to carb, unscrew the bolt out of the bottom of the bowl and look for a hole down the center and hole on either side under the bolt head. most likely these are plugged. you can take a strand out of a piece of #12 guage electrical wire and somewhat clean the holes well enough to shoot carb cleaner through them. once you clean out the hole going down to the holes going across and clean inside of bowl you can reassemble and should start. in the case of the jet being screwed into the carb assembly just look for a brass screw and unscrew it.and clean it. all jets are made of brass so look for a gold colored screw with flat blade tip screwdriver slot. if its plugged with dirt or old gas you found your problem.
Your fuel petcock (on/off tap) may be restricting fuel flow and the carbies may need to be cleaned.
To maximise fuel flow thru a dirty fuel filter or restricted fuel flow thru a contaminated carby jet, disconnect fuel hose from tank and drain remaining fuel in carbies into a glass and inspect for contaminates. Take off float bowls and spray ($8 retail 400g aerosol spraycan carby cleaner) cleaner down fuel line/hose until it pours out of carbies. Allow to evaporate. Replace fuel filter (there may be a cylinder of white mesh gause inside of fuel hose) and check bottom of tank for rust, scale or debris. Try fresh fuel, new sparkplugs (0.8mm gap) and ensure choke is functioning correctly. Check camchain tensioner is not loose. Keep battery fully charged, replace if the bike can't achieve this when running with no lights..
Your float bowl needle is not closing when chamber is full. Needle is either worn a groove or dirt is caught in seat of the jet. Turn fuel off, remove float bowl and spray some aerosol carby cleaner thru fuel line till comes out bottom. Replace fuel line and hold float bowl up till it stops, (don't push up hard) turn fuel tap back on and if fuel comes out the bottom, your needle or jet seat is worn. If fuel doesn't flow out, your float bowl tab has to be adjusted, bend upwards to decrease chamber capacity. Cheers.
take off the fuel bowl and you will see a float for the float valve needle jet. Take the float mechanism off and check the jet is not clogged with dirt.
beswt to take carby off to do this and turn carby so bowl is facing you. Otherwise if you remove the float you may drop the needle out and lose it.
You will have a carby problem. When the choke is one, and different fuel circuit is used. When you turn off the choke, you go back to the idle circuit of the carb is used, when under throttle, main jets kick in. You probably have a blockage in one of these circuits. Strip the carb down, clean with carby cleaner, blow out all air circuits and jets with compressed air, then setup the idle mixture and tick over speed. Always work with fresh fuel, and drain off, discard any fuel older than a couple of months. It goes off, and turns to a gel like substance that blocks up your carby. Hope this has explained your problem. Happy to talk to you more about it. A FixYa vote is a great reward for for my time taken to explain this to you. Cheers