I'm having same issues currently. Mine has me thinking my head gasket is in need of replacing. But seems more a fuel issue though. Ivd been getting some crackling when shifting, pinging sound, possible bad coolant mix but shifts fine sometimes with out. Still have clutch issues, not quite releasing all the way and weak pedal even after bleeding. Umm.
But i did just change my fuel filter so checked that after a fresh fill up, and found a gas leak from the return line clamp so tightened that up and was better however the o ring clamp thing is not sitting right and has a leak there as well. Typically can't fill it up more then half at a time. But decided i would and well now gas leaks. I got a buckett cause thats no good.
So having stalling issues as well, good be clutch disengagememt issues. Or getting hot a few times and with lack of power as well, perhaps its a head issues, valves. Long starts as well as if not holding gas pressure. Fuel pump or perhaps the fuel pressure vacuum regulator. need to get fuel pressure gage on it and check the s t ats.
But also i swap back and forth on a coil as they seem to overheat and need a wiggle now and then. Also a swap around fuses and relays as well.