Bike Running too rich
I recently bought a 1983 Honda Nighthawk 750. After buying it, I found out very quickly that it has a dead stator and regulator. I am currently sourcing parts to correct it.
I discovered too, that it is also running rich (ie dry black spark plugs). I put in new plugs and cleaned the jets and float bowls but it is still running rich. It starts easily but starts to stumble with the choke on and I have to rev the engine to get it to warm up. When warmed up it idles OK but stumbles when the you rev the engine high. I compression checked the engine and it shows with 140 PSI on all cylinders (within a couple of PSI).
My question is does the absense of a working charging system lower the effectivness of the spark and cause the engine not to be able to burn the gas properly making the bike run poorly?
I don't know what to check next. Any help would be appreciated.