Question about 2005 Honda CRF 100 F

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My honda crf100 will not start i have change the spark plug and air filter the only way it will run is if I spray starter fluid into the carb and keep sraying it into the carb otherwise is just shuts down

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It the bike has been sitting for a long period of time. the carb. can gum up. pull the carb. off. clean it up really good. insuring you get all the small ports clean. then try it again.
every dirt bike i've had requires a oil wetted air filter. dont forget about that.

Posted on Feb 23, 2009

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Pull the carbie and remove the main and pilot jets and the emulsion tube clean them and retry..

Posted on Feb 27, 2009

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I have a 2003 suzuki gsxr 1000 and I changed the spark plugs but it still won't start and I tried putting in Sea Foam but it still won't stay started without spraying in ether(started fluid)


If it runs, or at least wants to run when using the starter fluid, then I would think that it is a fuel delivery problem. This could be a carb problem (blocked jets, incorrect settings etc.) or that the fuel is not getting to the carb (blocked filter, line, faulty fuel tap). Make sure plugs, air filter, fuel filter and fuel itself are all as they should be as often it is the little things that are the main cause of problems.

May 22, 2015 | 2003 Suzuki GSX-R 1000

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We clean the carb then when we put it on its not starting anymore we change the spark plug we buy new and again its not starting help please


Get a fire extinguisher for safety and place it to the side. Remove the airbox where you can spray 2-3 seconds of starter fluid into the back of the carbs. Try to start it and if it starts you have a fuel system related problem. Go back over the carbs, check the fuel pump and fuses to make sure they are good. If it does not attempt or start it could be ignition related so rmove the spark plugs and see if it has a spark.

Mar 17, 2014 | Honda Dio Motorcycles

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I have a 03 Honda spirit 750 --was riding yesterday when it started spiting/sputtering like it was out of fuel, I checked fuel(half tank) I put another gallon in just to be sure but no luck. Also tried...


Drain the carbs. Water condensation in the gas tank makes it's way into the carb float bowl. After a while the water builds up enough to replace gas in the carbs. Bikes don't run well on water. If that doesn't work at least no money has been spent. Next, stick in fresh spark plugs and be sure the air filter is clean.

May 16, 2011 | 2002 Honda VT 750 DC Shadow Spirit

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I have a 2002 Honda Spirit 750 thats running with a cyl missing and sputtering when twisting the throttle. I removed the seat and gas tank to try and remove the carb boots between air filter to try and...


if the open hose on each boot is on the air side of the carb..air will be pulled through them all the time bypassing the air filter... if the hoses are on the engine side of the carb and open... the engine won't ever run right unless you plug them... i would first take the spark plug cap and spark plug out of the cylinder that is missing...place the removed plug into the cap and hold the plug by the cap to a a part of the frame and turn the bike over to see if you have spark at that cylinder. if you do...go ahead and try some starting fluid spray in the hose on the intake boot.
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Nov 16, 2010 | 2005 Suzuki Boulevard S50

1 Answer

Fuel system has been flushed and prooved that that isnt my problem as to why it wont start , could you possibly tell me any other reasons it wont start ? batterys good , got new spark plug , loads of fuel...


Remove the air filter and clean or replace it. Get a can of spray starter fluid and spray into the carb before mounting the filter. Chances are the new spark plug is wet from gas.

Sep 03, 2010 | 2007 Yamaha XT 125 R

1 Answer

81 yamaha 175 sat for while got spark new gas wont start any ideas pls ty


Clean the carb> remove the float bowl and soak the carb in de-natured alcohol for an hour. Then clean it with spray carb cleaner. Install a new spark plug, clean the air filter, get a can of spray starter fluid and give the air cleaner a shot when starting it. Check the crank shaft for worn bearings > Remove the left side cover then hold the flywheel firmly and lift up and down, left and right. If the shaft is not rock solid the bearing and seals will need to be replaced.

Aug 28, 2010 | Yamaha TDR 125 Motorcycles

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1980 Yamaha XS 400 Special First, How do you tell if it has an electronic ignition? Second, Can't get it to start. Have put gas in spark plug holes. Didn't hit. Bike has been setting on a dirt...


First, you need a good battery. The bike does have electronic ignition. Soak the carbs in denatured alcohol for two hours after removing the float bowls, then clean with spray cleaner. Spray into every large and small hole you can find. Remove the rubber diaphragm from the center of carb prior to cleaning. New diaphragms are $196 each. Check all fuses. Put in new spark plugs, NGK-BP7ES. Clean the air filter. Get a can of spray starter fluid and spray on the air filter. The rubber mounts for the carbs are likely to be a problem once it gets running. It looks like they are still available at Babbitt's, $53 each. If un-carburetored air can get into the joints it will lean the fuel mix and cause uncontrollable high idle.

Before you sink a lot of money into the bike, check for spark. If spark is present, coast the bike down a good sized hill without any spark plugs being installed. Put the bike in 3rd gear as you go downhill then let the clutch out to turn the engine over. Now ( using the clutch lever ), shift through all the gears then neutral. If the bike will not shift properly it likely has a bent shift fork. I can't find any forks avaiable. With a bad tranny I would put it back in the dirt floor building and find a newer bike. Here is a link to Babbitt's. Please rate my answer. Thanks.
www.babbittsonline.com/pages/parts/viewbybrand/default.aspx

Aug 13, 2010 | 1980 Yamaha XS 400 Special

1 Answer

I just purchased a 1985 Suzuki RM 250 that hasn't been started in 8 years. What suggestions would you have before I try and start it?


Change gearbox oil, install a new spark plug. Check for spark before installing the plug. Remove, dis-assemble, and clean the carb by soaking it in denatured alcohol for 15 minutes then finish with a can of spray carb cleaner. Wear goggles to protect your eyes from the spray.
In stall a new air filter. Remove the gas tank and clean it out. Install an in-line fuel filter to prevent trash from the tank getting into the carb. Use a can of spray starting fluid on the air filter to aid in starting.

Jul 04, 2010 | 2003 Suzuki RM 250

1 Answer

Will not start without starting fluid will not stay running no idle, carberator getting gas, put fresh gas and cleaned carb what now?


Belive it or not ,but engine get addicted to engine starter solutions or sprays .They give a bigger exsplosion in the cylinders and are fine in cold weather but can cause starting problems .First check how powerful your spark is at the plugs .A weak spark will cause your problem .Take out all your plugs and attach them to your plug leads .Place your plugs on the cylinder and turn the engine over .This is best done in a garage or where there is very little natural light ,this will help you to see how much spark you have ,If its a strong spark then its either a fuel problem or air problem .Try running without the air filter .Your air filter may be your problem and you are not getting the right mixture deliverd to the cylinders .

Mar 12, 2010 | 2005 Qianjiang QJ125

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