Question about 2003 Yamaha TT-R 225

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Jets are clean, bowl is clean, still runs like its gunked

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Get a bottle of a fuel additive called seafoam and follow the directions regarding how much to pour into the fuel tank. Ride for 5 miles and you will see a remarkable improvement. Repeat as needed.

4 thumbs up please. ty. Joe

Posted on Oct 08, 2010

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Posted on Jan 02, 2017

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My toro snowblower will not start,with gas or starting fluid,no spark,stater rust cleaned off flywheel,carb cleaned,bench set,It fired with starting fluid ,but the carb had gunk in float bowl,what am


Clean out the float bowl as well clean out the fuel jet in the bolt that holds the bowl on. There usually are very small holes in this jet and if you can't see or blow through them you have to clean this out. Will not run if this is plugged. You can blow this out with an air com presser or a very small wire to push through it. Don't force anything through this hole or you could damage it. If it will start when you put a spoon full of gas in the spark plug hole and replace the plug and stalls in a few seconds it's usually a dirty carb or dirty jet. You can buy a cleanser as well to spray if needed.

Dec 26, 2014 | Toro Powerclear 221qe Electric Start...

Tip

Cleaning the fuel float bowl


Note: this procedure will often cure no start issues and or surging issues, or once done a little running after the fact will clear up surging issues as well.

Often gas with ethanol will cause gunk build up in the float bowl making your mower run badly and have a 'surging' behavior especially at low idle speeds, or cause it to not run at all (almost all gas has ethanol as an additive now for 'emission' reasons so assume you have it unless you KNOW you don't). This can take as little as a few weeks or a month or two of not running to happen. Frequently a simple float bowl and carb cleaning will resolve these issues completely or at least to get you back to a running point.

To clean the float bowl area, it's best to remove the carb. (make sure you pinch off gas lines with a vice grip or similar to keep it from spilling out and remove things carefully to avoid breaking seals on the intake)

Tip the carb over a catch basin or oil drip pan and turn it this way and that to pour as much excess fuel as you can. If your carb has a electric solenoid or an overflow screw on the bottom, removing this will let you pour fuel out of the bowl area.

To begin cleaning, Turn the carb upside down. Typically there are 2 or 3 screws that hold the bowl to the bottom of the carb. Do ALL of this over a nice metal tray that will catch any falling parts like small screws, carb jets, springs, plungers, etc.

Very carefully undo these screws and work the bowl until it breaks free of the seal

gently pull the bowl off the bottom of the carb. and you should see the float mechanism and main jet sticking out toward you. This visible area, all the orifices, and the bowl you removed are what you want to clean.

ANY orangish discoloration, sediment, or other gunk that is not obvious parts of the carb is bad news.. or good news because you're about to remove it and you found a problem that was worth fixing. If everything is clean, shiny, and aluminum and plastic looking, all is well in there, put it back together and move on to other DIY projects. :)

To clean it out assuming you saw at least a little orangish discoloration, a good pressurized can of carb cleaning spray is GREAT... HOWEVER, do not let carb cleaning spray get on ANY gaskets or rubber seals. The chemicals in carb cleaner will expand the rubber and make the seals not fit properly anymore and ruin them. (beware there is a TINY, impossible to see rubber seal on the plunger for the float so you MUST REMOVE THE FLOAT if you want to use carb spray to spray the metal on the carb or the jets while they are still on the carb. It may be better to just use a little gas in a metal tray and a soft toothbrush to scrub things off and clean them out. Typically it's just a pin you have to slide out in order to remove the float and plunger, it's sometimes a little tricky getting it back in just right.

You can also use your air compressor spray tool to blow out passages and dry out parts you are cleaning and it's great to blow out all the orifices you see in both directions ... BUT ... watch out because it is easy to accidentally blow out the jets and lose them! Also, wear eye protection ... seriously, do it, even if you're not using compressed air.

Once you have cleaned everything, make sure no little parts are in that handy metal tray you worked over the whole time. If there are any, find where they belong and put them back. Nothing in there is unnecessary... nothing!

Once you put it all back together, the carb will naturally refill with fuel and you should be able to start right up after a few seconds of cranking.

Any residual surging will often clear up after some run time, I like to use a little mix in gas carb cleaner after doing a carb cleaning. If my tractor has sat more than 2 months not running, I often check this before even trying to start to make sure I don't pull any gunk that did build up into the jets and clog them. Cleaning the bowl is easier than cleaning the orifices!

on Nov 15, 2013 | Garden

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Small engine not getting fuel


When working on small engines most of the time the main jet is plugged because of seasonal use and gas becomes sludge in fuel bowl. Clean out main jet with small wire that will fit. On techcumshi engines there is a hole that is in the side of the threads that is really small and will affect the idle. clean the bowl well or that gunk will get in the jets again soon.

on Feb 22, 2010 | Garden

1 Answer

Power wash machine not staying on unless choke is partially out


pull the bowl and clean out water and gunk from the main jet. Blow out all other jets and tubes.

Jan 30, 2014 | Honda GCV160 Engine

1 Answer

Fc420v


remove the main jet in the carby and clean out as it has gunk in it preventing the fuel to pass up to the venturi

Jun 16, 2013 | Garden

1 Answer

GENERATOR WON'T START. IT HAS NOT BEEN STARTED IN ABOUT THREE YEARS.IT DID START AFTER I REPLACED SPARK PLUG,BUT ONLY FOR ABOUT 30 SECONDS..ALSO SPRAYED STARTING FUID IN CARBERATOR. NO GO.


FIND THE FUEL SHUT OFF VALVE.IF IT WAS CLOSED WHEN YOU HAD IT RUNNING,THE FIX IS AS SIMPLE AS DRAIN OLD FUEL,REPLACE WITH FRESH GASOLINE,OPEN THE VALVE TRY TO CRANK IT AGAIN.
IF IT WAS OPEN WHEN IT WAS RUNNING,SOUR GASOLINE AND VARNISH HAS LIKLEY GOT TO THE CARBORATOR.
REMOVE THE AIR FILTER,LOCATE THE BOLT IN THE CENTER,ON THE BOTTOM OF THE CARBORATOR BOWL AND REMOVE IT. CAREFULLY EASE THE BOWL STRAIT DOWN,AS NOT TO BEND THE TAB THAT CONTROLS THE FLOAT LEVEL,OR LOSE THE FUEL INLET JET. EXAMIN THE BOWL FOR CORROSION OR GUNK.
THIS IS AN INDICATION THE CARBORATOR MAY BE PLUGED WITH GUNK,WHICH COMES FROM GASOLINE SOURING AND TURNING TO VARNISH AS IT EVAPORATES OVER TIME.
ON THE CARBORATOR,WHERE THE BOWL WAS TAKEN OFF,IN THE CENTER ON THE BOTTOM NOTICE THE FUEL PICK UP TUBE,TAKE A PIPE CLEANER AND CLEAN IT BY PUSHING STRAIT UP AND DOWN A FEW TIMES,THEN FLUSH IT WITH CARB CLEANER.
REPEAT THIS UNTIL IT IS CLEAR.
LOOK CLOSELY AT THE SIDE OF THE PICK UP TUBE FOR A VERY SMALL HOLE,WITH A SMALL WIRE,CLEAR THE HOLE AND FLUSH WITH CARB CLEANER.
CAREFULLY REPLACE THE BOWL AS NOT TO BEND THE TAB ON THE FLOAT,MAKE SURE THE NEEDLE JET IS IN THE NEEDLE SEAT AS YOU PUSH THE BOWL INTO PLACE.
PUT THE BOWL BOLT BACK IN,CAREFUL NOT TO OVER TIGHTEN IT.
WITH FRESH GASOLINE IN THE TANK,AND THE FUEL VALVE OPEN,YOU ARE READY TO TRY CRANKING IT.
IT MAY TAKE A FEW TRYS.
IF YOU FEEL CLEANING THE FUEL SYSTEM IS TOO MUCH FOR YOU,PLEASE DO NOT ATTEMPT THIS.TAKE THE MACHINE TO A SMALL ENGINE MECHANIC.
YOU MAY CAUSE COSTLY DAMAGE TO DELICATE PARTS OR UNINTENTIONALLY CHANGE THE FLOAT LEVEL CAUSING FLOODING OR STARVING OF FUEL TO THE ENGINE.
BEST OF LUCK...

Nov 05, 2010 | Coleman Powermate Proforce 2500 Generator

1 Answer

Mower will not run in high speed idles at one speed push throttle it runs at the same speed then stalls out whith lots of gas in the carb


Your carbs main jet is most likely blocked. When the throttle goes off the idle jet to the main jet there isnt enough fuel flow and the engine stalls.

You need to removed the main jet and run a small piece of wire through the main jet to clear it. This is a good time to look at the inside of the float bowl to see if you have excessive water, rust or dirt accumulating that is a sign you should clean and drain the fuel tank and lines as well. The main jet is actually the bolt that holds the fuel bowl on the bottom of the carb! You need to look very close at the jet near the top of the threads to see the little whole there and clean it. A wire brush to clean off the threads and fine piece of wire strand to clean the hole will do the trick!

If you dont have a bowl type carb you will need to remove the carb from the fuel tank and locate and clean the inlet screen and main jet and then remove the fuel tank and clean it out too.

Good luck and be careful.

Jul 16, 2010 | Briggs & Stratton Garden

1 Answer

Coleman Powermate keeps stalling!


1. Turn off the gas

Remove the fuel bowl and the brass jet in the bottom of the carb. The bolt / cap nut for the fuel bowl has 2 holes in it make sure they are clean. Also make sure the pin hole in the jet is clean along with the holes in the side of the jet. (daylight check of pin hole)

Usually on the bottom of the gas tank there is a fuel bowl. Remove the bowl and dump contents making sure it is clean then re-install the fuel bowl for the tank.

Go back and reinstall the carb jet

Now lets flush the fuel system.
Get something for catching fuel uder the carb then momentarily turn on the fuel to flush the system and catch the fuel.

Turn the supply fuel off and reinstall the filter bowl and cap nut.

Turn on fuel supply.

Time to it test now.

Kelly

Feb 28, 2010 | Coleman Powermate Premium Plus 6250W...

1 Answer

My 1991 yamaha fzr 600 wont start


how long did you let it sit for with gas in the carbs, you may have clogged up your jets. after awile gas will break down and turn into varnish, if your bike trys to push the varnish through the system it will clog the jets. try to take off your seat then remove your plastic over the gas tank. remove the gas tank and you will see four bowls *silver ones right next to where the gas tank is on the carbs*. your bowls are in sets of two. there are drain screws on the bowls to remove the gas inside. remove the 16 screws holding the bowl onto the carb. *4 on each* inside you will see your floats and jets. carefully loosen the jets with a screw driver then finish unscrewing them by hand, they are brass and very soft. you should be able to hold up the jets to the light and see a small pin hole. if not get some carb cleaner and give them a squirt and blow them out. do not try to use anything to clean them out, they are very very sensitive and one knick will change the jet. after that i would spray some carb cleaner up the jet holes and try to clean them out also. if you have a compressor it would be wise to use that to blow out the gunk from the jet holes as well. after you run threw all 8 jets put them back together and see how it goes, if nothing you may have to check the jets again and if clogged again your carbs are gunked up and will need to be cleaned

Feb 11, 2009 | 1991 Yamaha FZR 600

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