Re: cb750 popping/backfiring

Posted by samgrylls on May 13, 2013; 3:35pm
URL: http://vintage-and-classic-hondas.81.s1.nabble.com/cb750-popping-backfiring-tp4040698p4040702.html

It's not that loud, just some scattered popping.  It does it when it's revving up and sustained, but not revving down.  Can't tell where exactly it's happening, I can check and get back to you.

On Mon, May 13, 2013 at 10:32 AM, seestheday [via Honda CB750'S] <[hidden email]> wrote:

Is it loudly backfiring, or just kind of popping?

Does it do it when it is revving up, revving down, or sustained at 2,000 RPM?

Can you tell if it is happening in the exhaust pipe or the carbs?

Could be lean/rich condition, but I'm leaning towards a timing issue.

1981 CB750K with 900 cams
90K KM's, rebuilt head, rebuilt carbs, upgraded valve stem seals

My wife's recipe website that I'm trying to help promote: BuffyAndGeorge.com. Yes, I am a lucky man.

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