Question about 2003 Honda CR 125 R
Do you have a spark ? plug out , put ht on and place on head and crank ! or the qwik test is hold plug in hand and crank ( slowly ) and you should feel small voltage !! honestly !!
Posted on Dec 04, 2013
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Posted on Jan 02, 2017
IF you have a battery get a new one ; put in new gas ; super; dsid you ajest any screws on carb. You tight need to run a prime tank right to your carb to prime it; and then hook your tank backup new gas lines to your carb. Now break out with the WD40 to spray all switches for rust.
Posted on Mar 23, 2009
check for leaks around the exhaust headers,mine did what yours is doing,i replaced the copper exhaust seals in the head(exhaust ports),air is getting into your exhaust system and it mixes with the unburnt fuel and ignites causing the backfire,i replaced copper seals(about $2nz each) and problem went away
Posted on Jul 03, 2009
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
Posted on Aug 12, 2009
SOURCE: 2002 Honda Elite 80
if your getting no fuel at all to the carb then its the petcock valve it works off of vacume so take fuel line off and spin it over if fuel runs out then its fine that means your needle valve in carb maybe stuck. and in my case a stick pulled the vacume line off the intake that controls the petcock valve.
Posted on Jan 02, 2010
I could not locate a diagram of your machine's carburetor. I can tell you, for certain, that the carb does have a rubber drain tube that goes from the bottom of the float bowl and vents to atmosphere beneath the vehicle.
There are three required ingredients required for combustion: fuel, compression, and a spark (at the right time). Try to find out which of these are missing. Loosen the drain screw on the float bowl. Is fuel present? Check the compression - you've got to see at least 140 psi for anything to happen. Pull the spark plug and crank the engine. Is there a spark?
If it has sat for an extended period of time (more than just a couple of months) then the carburetor will be plugged with fuel varnish. It is very easy to think you've got everything cleaned, when the jets are still plugged up. I would take the carb apart and remove the jets. Hold them up to a light source and look through each one. If you can't see through them, there's the problem.
Posted on Jan 09, 2010
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