To time a 1984 350 engine without a timing light, first, locate the timing marks on the crankshaft pulley and the engine block. Start the engine and let it warm up, then gradually advance the distributor until the engine runs smoothly and responds well. You can also listen for a slight pinging sound, which indicates too much advance, and back off slightly. Lastly, ensure the engine idles evenly and check for optimal performance while driving.
You could put a vacuum gage on the engine and time it for peak vacuum. A timing light is still better.
To time a 1984 Ford Bronco II, you need to warm up the engine and then turn it off. Locate the timing indicator on the crankshaft pulley and the timing mark on the engine's timing cover. Use a timing light connected to the number one cylinder's spark plug wire. Start the engine, aim the timing light at the timing marks, and adjust the distributor until the timing mark aligns with the specified degree for your engine, which is typically found in the service manual.
An engine can be timed without a timing light by using the markings on the harmonic balancer. Each mark indicates 1 degree above or below top dead center.
There is no need or any way to "time" a 2.7L with a timing light.
If the timing chain has jumped time, the vehicle will run rough or not at all. You will need to check the time with a timing light to see if it is off.
No.
In a jam without a timing light or a vacuum gauge for reference, I would advance the timing a little at a time and test drive the vehicle between adjustments until I heard the engine ping under load, then retard the timing just to the point the pinging stops.
Smithsonian World - 1984 Time and Light 1-1 was released on: USA: 6 October 1984 Japan: 9 June 1989
If the light on its time to renew the timing belt (t-belt)
To time a DVX 400, first ensure the engine is at the correct operating temperature. Then, locate the timing marks on the crankshaft pulley and the timing cover. Use a timing light to check the ignition timing by pointing the light at the marks while the engine is running. Adjust the timing as necessary by loosening the distributor and rotating it until the timing marks align properly.
You use a timing light to check the marks on the timing chain/belt.
Your question is too vague usually when someone says that their engine has jumped time that means that the timing chain has jumped on the timing sprockets. If that is the case you would need to change them. If the distributor is out of time to do it right you would need to have a timing light. You would need a repair manual for the specifications to fix both of them.