Question about 1986 Yamaha XJ 700 X Maxim

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I replaced spark plugs on my 86 XJ700X but it still wouldn't fire. The engine sounds like its cranking over without problem. The oil is getting old, but doesn't leak. I have a new battery also. i checked the petcock when i removed the gas tank and it also allowed fuel to flow properly. What could it be?

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Pull the plugs and reinstall caps and lay them so they are grounded and crank engine to verify that you are getting good spark on all 4 plugs. If ignition is fine, and you are reinstall plugs ensuring that the wires are attached to the correct spark plug. If you have no ignition...check out the interlocks sidestand switch, neutral switch etc
Has the bike been sitting quite a while with old fuel in carbs...they may be gummed up?

Posted on Mar 22, 2011


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Posted on Jan 02, 2017


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