- Dec 9, 2020
Yes I checked the valve opening through the spark plug hole and it's all timed accordingly. The boyer came with the bike as well as a pazon powerbox if I recalled right. I connected the power box directly to the battery just like in my triumph.A big V8 will do similar when timing is 180 degrees out. Difference is it's really obvious and loud backfire.
I think I'm having a brain fart. Can a Norton wasted spark ignition be 180 out? Ya know like a broken clock is right twice a day. Sorry I went off the rails.
Have you taken the valve covers off and checked where the valves are when you are at what you think is TDC compression stroke. You can do it through the spark plug holes too, but with the valve covers off, you'll know for sure what is happening.
In my limited experience when the Boyer ignition is set up statically according to the instructions, it's usually fairly close, and the motor should start.
I don't want to sound like a smart guy, cuz I'm not, but are the carburetors synced up and using the right jetting, needle, slide, and so on?
Kommando has a good point. If the battery is showing 11.7V with the key Off, the battery is probably too low for a Boyer MkIII with the key On. Did the bike have the Boyer on it before the rebuild?
The carbs are all in spec plus I placed a new stay up kit with the new needle valves (Viton tip)
I checked the spark again. Placed both spark plugs against the bolts of the engine head and was expecting more spark. I can only get a consistent spark when I kick the engine really hard and it rotates higher with the spark plugs off. Could it be caused by lack of voltage from the battery? or maybe the boyer is malfunctioning?