Question about Yamaha Motorcycles

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Posted by Donald Doty on


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Chris Southgate

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Have you checked the expansion chambers to see if there is a blockage and also the stinger mufflers also check your kill switch wiring and switch block hope this helps

Posted on Feb 05, 2020


Kory Keiper

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Make sure it has enough compression and make sure it has a good enough spark and you haven’t flooded it.

Posted on Feb 04, 2020


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SOURCE: my yamaha warrior 350 has gas and spark but wont start.

check your timing as described if it checks out ok. you might want to check the intake valves and exhaust valves. intake 4 and exhaust 6
could have a bent valve.

Posted on May 06, 2009


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SOURCE: my 2002 yamaha blaster will not start.

Check that you are actually getting spark to the plug first. If you're getting spark, check your timing. I would say these would be the easiest 2 areas to start with. If both of these are good, it could be anything in your wiring, or your CDI box. Good luck!

Posted on Jul 08, 2009

David Thompson

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SOURCE: very hard to start 1991 yamaha fzr 600,

Check the choke to make sure its operating correctly.

Posted on Jul 27, 2009


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SOURCE: i have a 1991 cr250 wont start it has compression

just adjust the accelerator cable that is connecting to the fuel pump.check the and repair the throttle cause its the reason why it wont start . Its flooding the because of too much release of gas to the carb.

Posted on Jul 28, 2009


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SOURCE: 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

Posted on Aug 12, 2009

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1 Answer

My 1999 Plymouth breeze wont start

Fuel, spark, air is the fire triangle... You're unfortunately missing one of those... Try simply waiting for a long time an hour or so and jump starting the car if necessary.... my guess is that you may have flooded the engine with repeated failed attempts to start the engine. That means there is too much gas and the plugs can't spark because they're too wet with fuel...

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Have you checked for spark? That's where you need to go to first. Take out the plug, put it back on the plug wire and hold it against the cylinder head. Kick over the motor and watch for spark.

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My yamaha maxim wont start it was running two days ago and now it wont stat its 1980

need 3 things to run
1. fuel
2. air
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pull plug wire off try to start, hear snapping noise (spark) good, if not coil may be bad
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1986 yamaha 350 xt wont start. new spark plug varified spark and gas. why wont it start?

make sure its getting fuel then check to see how much compression it has it might have a tight valve

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I have a new batiere in my 1991 vino 50cc tow stroke, And the starter wont work and it wont kick start even with starter fliod. Anything that I can check or replace?

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i had the same issue. it's gonna be a blockage in one of the vent tubes to the carb. check the line to the left of the carb that runs next to the gas tank. if thats fine then check the gas cap line. then if thats all good then check the line that runs below the carb. these are all vent tubes and allow the carb. to refill with fuel

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2 Answers

Wont start

I had the same bike for 3 years and it wouldn't start when it was too cold outside under--about 33-37 degreese--it wont start.
---how cold is it where your trying to start it--

i know this bike like the back of my hand

you can email me @ [email protected]

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1 Answer

91 yamaha fzr engine turns but wont start

the floats in the carb are stuck. you can try lightly tapping on the carb with a screwdriver that should do the trick.

Mar 10, 2009 | 1991 Yamaha FZR 600

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