Question about Honda Motorcycles

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My 05 honda 350 won't start will turn over but not run was runing good then it stop and now won't run the carb was bad so I got a new one and plug what could it be it's got spark good gas

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  • 67midget Apr 10, 2015

    If the bike ran well before you had troubles then I would say the new carb you put on is not adjusted properly,or if it was a used carb it needs to be cleaned out.too much gas on a carbed bike may mean your carb float is stuck open.Tap it lightly(the carb) and see if this makes any difference.


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Get the compression checked.

Posted on Apr 09, 2015

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Take out the spark plug and squirt some gas into the combustion chamber,replace the plug,and see if it will fire.If it fires,runs for a bit then dies you have a fuel delivery problem.If you get nothing then I would be looking at the ignition system for a bad connection,green death,(thats the corrosion along copper),low battery.etc There are three things needed to get ignition,fire,fuel,and air.One of these is not there or low.Did you clean out the new carb before you put it on? Good luck

Posted on Apr 09, 2015

  • justin edwards Apr 09, 2015

    New battery all my lights come on I put gas in the plug hole and nun it will spin over really good then it stops and it will spit gas out of the carb


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Posted on Jan 02, 2017

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SOURCE: dies when hot no spark carb gets gas plugs are dry start when cool

It sounds like the coil getting hot and breaking down. Check for bad grounds also.

Posted on May 31, 2009

  • 8 Answers


have your carb. rebuilt and make sure there is not anything in the intake tube between the carb and the engine.

Posted on Jun 01, 2009

SOURCE: My Honda crf250r has trouble starting.

you better check for valve clearance.....and to be honest you're intake valve maybe to tight and kept will reajust it but this will last a ride or two...because maybe the mobdelium coating is done on the intake valve and it is getting tight all the time and kept open....put two new oem valve from honda and you will be back on the track....sometimes i also never rectify any angle on the seat of the valve, just put new one and as getting better since 2007....more good quality of coating on the valve....if you bought new valve for an older model they will come with that upgraded and last longer.

Posted on Sep 24, 2009

  • 1 Answer

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

  • 146 Answers

SOURCE: I have a 1984 honda xr 350 and i've changed the

Those bikes can be a pain to start after they've sat awhile. What always worked for me was twist the throttle a bunch. I mean make sure its flooded. Then lay the bike over on its left side until the gas runs out the overflow. Stand it up and lay it down until it stops running out. Then I squeeze the decompression lever and cycle the motor. Now just barely pull on the decompression lever to open the valve just barely. Get it to top dead center and give her a good kick with a twist of the throttle. Becareful it could kick back.
This technique works for when the bike stalls when its hot. Most important part is if you think its flooded lay it over and start the process over. Remember your XR has two carbs and will flood QUICK. After some practice you'll be able to hear it in the exhaust pipe if she's flooded or if she trying to come around. Trust me. I have four of these bikes. Two 83's, one 84 and my beloved 85.

Posted on Feb 19, 2010

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Sooted plugs proves tht the air-mixture is too rich.(too much fuel going to the combustion chamber)
You have to set the air-mixture screw on the carb/s.
Clean the carb/s, replace 'inline' filter , if you don't have one ..install one, reset float level.
It's better to also check the valve clearance too.
Fit in new plugs (gapping them to specs.) and run the engine to its normal temperature thn set the air-mixture screw...standard setting....all the way in i.e. tighten it slowly to the end making sure not to damage the tip of the screw, thn 2 and half turns outwards to 3.
Start the to normal temperature and thn reset the air-mixture screw +/- either way.
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Wont start has spark , new fuel, new oil.

Is the spark plug black?
It won't run well with a carbonized plug.

Is the main jet in the carb plugged?
If the plug is dry after trying to start it.....your fuel is not getting into the engine and most likely a plugged carb jet..
Also.....Is the fuel switch it in run position?

If the generator has sat for a while with fuel left in the carb/fuel tank.......the most common problem is a plugged varnished dirty carburetor in need of a good cleaning.
Always shut the fuel off and let the carb run dry (run until the engine stops)before storing.
Add fuel stabilizer to any remaining fuel or drain the tank before storing.

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sounds like bad gas or gumed up carbs try a fuel cleaner and fresh gas fire it up open and throttle up hard to free up the gum on the carbs mine did the same thing ....

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Just had same problem. Take carbs off and clean all jets and bowl. Be carful front and rear carb have different sized jets. When you put quad back together put entire airbox together even the cover. This quad will backfire unless air box is complete. I bet you anything your carb is full of trash.

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