1986 Yamaha FZ 750 FM (Japan) Logo
Posted on Nov 10, 2009
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Hi i have a yamaha fz 750 1987. there is no srark from either coils plus the bike was parked up for 2 years, can anyone help ?

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  • Posted on Nov 10, 2009
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Its possible the cdi unit has failed or the hd leads/spark caps might be at fault, i had the same problem on a 1990 zzr600 it turned out to be spark caps where ao to high a resistance and causing no spark to pass. try this first and if still no spark id go with another cdi unit. hope this helps

  • ddee111 May 16, 2012

    I have a 1987 tt225 Yamaha it starts fine when just pursing around runs ok. Its when I get on it about 3/4 mile down the road it will start back firing a little losses power and I have to wait a min then restart and is fine until I get on it again same thing happens will run like ****... just changed the exterior coil, plug, wire. No change? Any thoughts out there??

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My yam fz 750 fm has no spark at all,the bike was parked up for 2 years was ok before ?
this is likley to be a low tenshion feed problem, like points or switch,,its some thing simpel thats stoping the spark, take the points out and clean them up on sand paper checking that they open and close and are clean,check the coiles that the whire is clean and tight, and all the wiring loom if you can also the ig/switch, give it a swill with switch cleaner it may have croshion in it by now, then strip the carbs and clean all the jets, as i bet there all blocked up as well by now,,, flush out the fule tank with fresh fule and use a good fully charged battery to start up on, hope this helps good luck,
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Nov 10, 2009 • 1986 Yamaha FZ 750 FM (Japan)
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Spark plug order
If you are sitting on the bike, cylinder 1 is on your left then 2,3,4....looking at the coils, the left coil- left lead goes to no1cylinder. right lead goes to cylinder4. Right coil- left lead to cylinder 2, right lead to cylinder 3.
Hope it helps you.
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Apr 03, 2009 • 1986 Yamaha FZ 600
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