Any Tips on Tune Up?

[geezer101]

If you are stuck without a timing light, you can try a dynamic tune (but then you need a tach meter to monitor the rpm's) Don't go throwing parts at it, you will be better off getting error codes from the ECU. Timing might still be off, then there's low compression, mis-gapped plugs, arcing in the distributor cap or the cap not sitting right. A bad temp sensor will cause a fuel delivery problem (stuck in open/closed loop) Combustion chambers might be carbon'd up as well.

[DJWAMI]

If you are stuck without a timing light, you can try a dynamic tune (but then you need a tach meter to monitor the rpm's) Don't go throwing parts at it, you will be better off getting error codes from the ECU. Timing might still be off, then there's low compression, mis-gapped plugs, arcing in the distributor cap or the cap not sitting right. A bad temp sensor will cause a fuel delivery problem (stuck in open/closed loop) Combustion chambers might be carbon'd up as well.

For the time being, buying a tach or a timing light isn’t an option. I’m fairly confident that the timing is okay now. As far as “throwing parts”, it’s got A LOT of miles on it, and based on the amount of seized bolts and the general condition, I’m going to assume it’s very unlikely that anything on this motor has ever been replaced, so a majority of what can be replaced is going to be.

I already have a new O2 Sensor so it’s going on whether it fixes the issue or not, though I doubt it will. I wanted to do the coolant temp sensor, but I’ll have to wait for the shop to order me a new one since they gave me the wrong one. I’ll also be doing the ignition coil, as soon as I can manage to get it off the bracket, as it’s completely seized on there and the screws have stripped.

I spent around 18 hours total between two days working on the timing, and it’s running as good as it possibly can all things considered, but the misfiring persists.

I appreciate the advice, but like I said, I’m looking at issues beyond timing now, since I would be very surprised if there weren’t any other glaring issues on this rust bucket