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Why is my 1980 Honda CB 900 dying when it gets hot?

Changed coils, CDI boxes, cleaned all the grounds, changed the solenoid, still losing spark on 2 cylinders, everything has been scrutinized and changed and cleaned. What could be the problem?

Posted by Tracy M on


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not sure if its a old SOHC with the 900 upgrade
or a very early DOHC 900
because 1980-1981 was a change over year when they did away with the SOHC 750 - 900
and brought out the DOHC 750 - 900

the main issue with the okd single overhead cam was the oil ways get blocked up and starve the cam of oil
eventually the came will eat its way into the head normally the the end of the cams
you might need to seek a new head or reconditioned one if you can find one
the DOHC has the same issue just not as much

good luck

Posted on Dec 03, 2022


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