What kind of gauge is that? Electric sender? A bad ground, or power, or something along those lines could definitely cause weak spark, changed in timing, etc.
It's a speed hut electric. I thought that also, but all the Guages are daisy chained together with their harness. They get one power and one ground and I'm. It experiencing any other Guages fluctuate like that. (I would think if it's a voltage issue, I would see it elsewhere) I'm getting 14v at idle. I was wondering if something could be a wrong with the oil pump drive or dist. shaft?
