Mk2 1.4 fiesta (1988) not running om idle - possible carb or idle valve issue?
Hi everyone!
First time poster, so sorry if this is a bit of a mess!
I have a fiesta from 1988 (mk2 1.4, CVH) that runs very poorly on idle (the few times it actually runs). The car sputters and jumps, and I have to pump on the gas pedal constantly to keep it alive - the rpm are crazy low and then jump to very high only to drop back down again.
I have serviced the car and swapped all valve springs as two of them broke within a short time span. I have taken the carb (a Weber unit) off and ran air through it and there seems to be no blockage or debris in there. I have also removed the choke-unit as well as the idle valve-unit and all seem to be working to some degree at least. After refitting these parts, and before mounting the air filter-unit I tried starting the car and now I get short bursts of flames coming from the carburetor... So that's fantastic.
I know the engine is not the best on this model and that reno might be the best choice long term, but before that: does anyone know what could cause these issues and how I can try to fix it?
I am not great with cars, but have good help so I am definitelyup to the task of trying to work this out. I'm sorry for any potential misspellings or incorrect terminology (English is not my first language). I have also started looking for a new carb, just in case.
Thankful for any and all tips!