Quantcast
Jump to content

Recommended Posts

Posted

Hi everyone. So I parked my quads last fall for the winter and everything was fine. Now the Honda started as usual, but the Yamaha will just sit there and crank but no fire. Spark plug was good and good spark. Even changed the plug for a new one. Still the same. Disconnected the gas line and there was lots of fuel. Doe this mean carburator or electronics. One friend said heat it up with a small torch. Any ideas would be appreciated as I'm not that knowledgeable about mechanics. Thanks in advance.

Posted

If I had to guess, from sitting...the float pin in the carb is corroded and stuck. This happened to my 2004 Kodiak years back after sitting. It's either not getting fuel or spark. Spray some fuel into the intake and see if it starts, then you know it's fuel...take the carb apart or remove it enough to access the carb bowl. I think I rotated it somehow and pulled the bowl off and checked the float movement.

Posted

before pulling the carb off try draining the fuel tank & the float bowl completely empty.

then refill the tank with premium gas & seafoam addative (or any carb cleaner/snake-oil addative). leave the float drain open until the gas looks good and then replace the float bowl plug.

remove the airbox cover & filter (making sure the box is clean before removing the filter).

then spray some aresol carb-cleaner (not ether or starter stuff) into the intake and turn the bike over until it runs for a bit on the carb-cleaner. if you can't get it to take then the carb needs to be removed/rebuilt.

Posted

If you have good spark, and a good plug, I would take teh carb apart and clean it. Now ive never actually pulled apart the carb in my quad yet, but Ive ripped many apart and cleaned them, and they arent really that difficult. Im guessing you have a jet thats plugged.

Seafoam is wonderful stuff, but I dont think it would unplug a jet by adding it to your tank. I love the stuff though, I use it as a stabalizer and as a cleaner in lots of things around my farm.

Posted

i would definately drain your tank and clean your carb out. from it sitting over the winter the gas probably went bad. and it don t take much to get a carb dirty.

Posted

Honda shop told me to add stabilizer to the fuel and get a new gas can or fill it up at the pump. Also keep the tank full. I put a new carb in mine a couple weeks ago, after cleaning the old one. Runs like a champ now!

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

  • Similar Forum Topics

    • By RGS
      1989 Moto 4 YFM350ERW intermittent spark.
      Quad has set for about 7 years and was running when parked.  When I replaced the battery and attempted to start it had no spark. 
       
      What I have done.  Followed troubleshooting in the manual. 
      1.       Coil failed the resistance check so I replaced it.  Still no spark.
      2.       I performed resistance checks on the stator and they all pass.
      3.       Found a bad rear brake stop switch and unplugged it and connected the wires in order to disable.  Now I have intermittent spark.  I believe that the issue is with either the stator or CDI and not sure which.
      1989 seems to be a transition year for electrical.  I can get new aftermarket CDI units for 87-88 and 90-94.  I cannot get ones for a 89.  I can get new stators for 87-89 and 90-95.  Looking at the schematics the wiring on my moto is closer to the 90 ones on the ATV side of the CDI and closer to the 87-88 on the stator side of the CDI.  Looking at part supply sources the stator housing is the same part # for all the years and looking at some of the stators on Amazon that have the dimensions on them both of the stators are the same size.
      What I am thinking of doing is to replace the stator and CDI with a 90-95 one as these parts are all readily available.   Does anyone know if this has been tried before and if there are any issues with doing this.  
       As a side note I also have a 1993 Moto 4 YFM350ER that has been sitting longer but it is located about 400 miles from me at this time.  By doing this change in addition to being able to get parts I will also have 2 ATV’s that are the same electrically. 
    • By Suzukiquad
      Hi, I have been around everything with a motor since I was little, and finally purchased more to get my husband, and kids involved. I have 4 quads I will be searching around for information on. I have two 2002 Suzuki LT80K quads, a 1997 Yamaha Timberwolf 250, and a 1996 Kawasaki Bayou 220. I have had different ones throughout the years, and plan on buying another Yamaha Banshee. I plan on trying to learn more about all of them, so I can customize some of them. I know nothing about them besides how to race them, my dad always took care of the rest, but figured it was time for me to learn. 
    • By wanrep
      View File 2019-2024 Yamaha YFZ 50 service manual
       2019-2024 Yamaha YFZ 50 service manual
      Submitter wanrep Submitted 05/04/2025 Category Yamaha ATV  
    • By wanrep
      View File 2017-2018 Yamaha YFZ 50 service manual
      2017-2018 Yamaha YFZ 50 service manual
      YFZ05YYXH
      YF05RH
      Submitter wanrep Submitted 05/04/2025 Category Yamaha ATV  
    • By Atomusthenes
      I would appreciate being pointing in the correct direction for a wiring diagram and or schematics of the 88 Honda FourTrax 300 4x4 if anybody has any knowledge of how to test the ignition system stator and CDI I don't know if the voltage regulator probably and also the FCU I put a new ignition in it it is a cheap aftermarket one doesn't have the correct plugs but has the correct wiring scheme I get power  the neutral light comes on and the oil light stays on it turns over but I have no spark
×
×
  • Create New...