That's a good point. I don't know how to fully diagnosis it. I am going to school for mechanics and after this class, I plan on engines and rebuild classes.What's really WRONG with the old F engine?
What I do know is its running too rich. I need to replace the super stretched out throttle cable which I'm doing this week. Also replacing the fuel filter. It backfires occasionally and just started to stall when I let off the accelerator after driving a bit and backfires as doing that as well. Also goes into "limp mode" occasionally. From some research, it sounds like its mostly the carburetor and fuel filter that's causing all of this. Also after running for a bit when I turn it off the engine it still is turning over until I stop it by putting it in gear with the brake engaged and slowly let the clutch out to make contact and stop the turnover. It feels terrible.
The cooling system is also all being redone. I've been running flush/cleaner and distilled water for 20 miles and am supposed to for another 180. Then drain and I was going to do it again to clean as much out cooling part of the block. Then Drain and replace with new coolant, hoses, thermostat, clean the housing, and a new radiator.
As of now though I've decided to stop driving it until I replace the throttle cable, fuel filter, get the carb tuned, and replace the oil pan gasket that's leaking and old oil and filter for all new. Hopefully, this will solve most of the issues.
Then continue my radiator flushing journey and finally swap all the cooling components.
I would like to pull the heads and what not but like I said I have not gotten that far. I am gonna tackle these things first and then go from there.