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#1 header isn't getting hot

Posted by seestheday on Mar 13, 2012; 2:38pm
URL: http://vintage-and-classic-hondas.81.s1.nabble.com/1-header-isn-t-getting-hot-tp3822379.html

Hi All,

Now that I've fixed my carb leaking issue I have found that my #1 header isn't getting hot, indicating that the cylinder isn't firing.

I pulled them plug, checked to make sure that it was sparking (it is, at least when I was holding it), checked the compression (120 psi, not the best, but ok).  #4 was getting hot, so the coil is good (same coil, hooked up as the FSM indicates).  Spark plug smelled like gas.

Also, while I was out there, #3 seemed to be a little intermittent.  Makes me think it the crappy boots/wires.

Other than this being an intermittent problem because my spark plug boots and wires are very cheap, is there anything else that could cause this?

I plan on getting new boots later today.

Surprisingly, the bike was sounding very good considering that it was only firing on 3 cylinders.
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: Strawberries for supper. Yes, I am a lucky man.