There is a lot you can do.
Here is my scope connected to the #1 plug lead:
You can see the plug fire, the points close, and the plug fire again.
You can use a FLIR camera to analyze the engine.
You can put a timing light on the ignition to dial in the advance.
You also can do a lot with nothing but your ears and eyes.
LOOK at the plugs. I posted a chart to interpret what you see. Also look for soot traces up the insulator, I had one leaking combustion gas through the plug.
LISTEN to the engine. Run it with a bit of load and pull the plug wires one at a time. The RPM drop and engine roughness should be about the same for every plug. If one pull does nothing, that cylinder isn't even firing. If 2 aren't firing, you may have swapped plug wires and have them in the wrong order.
FEEL them. A quick light touch on the plug boot will give you a rough temperature check. If one is significantly colder than the rest, you have an issue.
Here is my scope connected to the #1 plug lead:
You can see the plug fire, the points close, and the plug fire again.
You can use a FLIR camera to analyze the engine.
You can put a timing light on the ignition to dial in the advance.
You also can do a lot with nothing but your ears and eyes.
LOOK at the plugs. I posted a chart to interpret what you see. Also look for soot traces up the insulator, I had one leaking combustion gas through the plug.
LISTEN to the engine. Run it with a bit of load and pull the plug wires one at a time. The RPM drop and engine roughness should be about the same for every plug. If one pull does nothing, that cylinder isn't even firing. If 2 aren't firing, you may have swapped plug wires and have them in the wrong order.
FEEL them. A quick light touch on the plug boot will give you a rough temperature check. If one is significantly colder than the rest, you have an issue.
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