You’re right, my initial description was vague.
This is a project truck that I’ve just acquired and never driven.
The run on is not smooth, sputtering and struggling… very much dieseling symptoms.
It idles at 600 RPM.
Ignition timing can’t be an issue because I’m disconnecting the hot side of...
That’s how I disconnected the ignition, I pulled the wire from the coil.
I did some Google research.
I reckon I have some carbon on the pistons/head causing hotspots allowing the engine to “ Diesel“.
Before pulling the head to scrape said carbon, I’ll try high-octane fuel and install an idle...