Question about 1985 Honda CB 700 SC Nighthawk

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Bike seems as if its running on 2 cyclinders

1982 Honda night hawk 750 not `85 700
I cleaned the carbs on this bike as I am ready to ride again (last season the bike ran fine) but this was not the problem - it seems that the bike is running on two cyclinders only the bike has fresh gas, spark to all four cyclinders, clean air filter... now I`m wondering if it might be weak spark ??? it must be electrical as the bike ran fine last year.

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  • campers560 Feb 03, 2010

    Hi there

    Yep the gas is in the float bowls on each carb and I`ve checked the h/t leads - had to replace one of them but still nothing....



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R all the mufflers the same heat--make sure carbs r ok n gas is gitten to um--inspec plug wires n the rest of ign for wear and bad contacts--with an ohmeter n repair manual varius test can be done-sayonnara

Posted on Feb 02, 2010

  • Arnie Burke
    Arnie Burke Feb 05, 2010

    u still need to buy a clymer manual-they r detailed in repair n troublshootin-u must test for normal spark in each cylinder which could be related to wear n tear on components-its an old bike-again feel each muffler coming from where it is blue n see which ones r cold-take ur time but follow the manual



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