Question about 1998 Honda CBR 400 RR

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Spark plug gap

What should the spark plug gap be on a 1991 honda cbr 400rr?

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  • Anonymous Mar 21, 2014

    spark plugs are black ,setting is 31 to 35 have them set at 33 what to do?


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Don't change the setting on the plug. The 400's are happiest when you just plug in new ones and ride. They like NGKs the best. There are two types for the 400. One runs hotter. This choice will depend on which country you live in and what the ambient temperatures are.

Posted on Nov 10, 2008

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I hav a honda cbr1000f 91 and the spark is very weak what would it be as i hav changed the coils and plugs already

Your new coil is problem. Please replace it or just use the previous one if it still good.

Feb 05, 2011 | 1991 Honda CBR 1000 F

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Dec 06, 2009 | 1989 Honda CBR 600 F(1)K

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Hi my honda cbr 600 fl 1991 the bike pulls great

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Compression tester reading on cbr 400rr

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May 09, 2009 | 1991 Honda CBR 400 RR

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My 2000 honda cbr 929 rr will not start

Did you gap the plugs to factory before installing?
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Mar 16, 2009 | 2000 Honda CBR 1000 F

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Wont start

the old petrol has buggered up the jets a good carb cleaning will fix the carbs now drain the old petrol out and get new dont try to mix old and new gas it does no good please give us a rate hope this helps

Jan 03, 2009 | 1988 Honda CBR 400

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