Question about Yamaha Motorcycles
SOURCE: Acura Legend Sedan 3.2 lts 1994
replace de ignition module first.. if still wont start good chances is the crank sensor is located behind the timing belt.. my 94 legend use to do the same thing until i replace the crank sensor.. and also if u can afford i will suggest u to replace the main fuel relay too... all this is after u are 100 pcnt sure that ur fuel pump is working....
Posted on Oct 09, 2008
SOURCE: hesitation during acceleration
could be the type of plug you are using.I was told only to use ngk plugs.I recently put bosch plugs in my mazda 3 and the check engine light came on and it started missfiring.
Posted on May 03, 2009
1 maybe there is a diaghfram tear at your carb only 1 is funtioning and 1 block engine is running but under power
2.check your fuel line from tank to fuel filter then pump then carb
probally there is a debrie stuck in the pipe line or in your tank
Posted on May 11, 2009
SOURCE: 1989 tw200 yamaha won't start
G'day egdbcs . Ok.now lets see.You say good spark,so i'm presuming you are doing the old sight test.Try bending the arm on a know good sparkplug about 5-6mm,earth the plug and kick'er in the guts(crank it over)Be very carefull , high voltage danger.If there's still a good spark it's safe to say that there will also be a good spark under pressure in the combustion chamber,speaking of which you should also do a compression test,anything over 100psi should be ok. as i'm not to sure of the extent of the re-build,hopefully the valves were lapped and checked for straight and true and valve seals replaced,if you notice oil on the tip of the spark plug you could have a leaking valve seal or oil seal .Try putting a small amount of fuel directly into the combustion chamber ,tighten up the spark plug ,install the plug cap and.......Yeah ..You guessed it ..."kicker in the guts".If all the abouve are correct and true it should fire up.If it runs for 5-10 seconds then stops you've got some sort of fuel starvation problem , could be dirt in the carb,blocked idle jet ,or air passage or even the needle could have come off it's clip,believe me with an old bike like yours anything could be worn and loose inside that carby.The only other thing to consider is the timing.There may be a good spark but is it happening at the right time inside the engine???. I'll leave it all in your capable hands EGDBCS.Hope this helps to solving your worries. Chow for now......Tilleydog..
Posted on Jun 03, 2009
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