1974 1.8L engine fast idle then stalls, Fuel injection issues Options

[tshih914]

My 1.8L 914-4 with stock Bosch L?-Jetronic FI after being stored several years started to develop a hard to start problem. When finally started would stall when I give the gas pedal any input to raise the revs. I suspect there was some kind of intake air leak and while fiddling around had a backfire which blew the AF meter which I had Pelicanparts repaired. After replacing the fuel lines with the stainless ones from Tangerine Racing and flushing out the fuel system with Techron the engine started to run normally for a short time. Now the engine can be started and fast idles at 3000 rpm but again any input to rev up the engine results in stalling. The idle adjustment screw at the base of the throttle housing is fully closed. Any suggestions on how to fix?

[wonkipop]

ps
in addition to blocking off snorkel the only other way it could pull air into the air cleaner is via the hose from the charcoal can to the air cleaner. i can see that hose is either very badly frayed in center or somehow joined. not clear. if that hose has leaks in it it could pull air via that into the a/c despite you having your hand over the snorkel.

maybe it can even pull air through the charcoal can?
anyway if i close off my cars snorkel with my hand it will die. but its not running at 3000 rpm either when i do it.

if you wanted to take that hose out of the picture for now you could pull it out of the aircleaner and plug the port on the airbox.

[Van B]

ps
in addition to blocking off snorkel the only other way it could pull air into the air cleaner is via the hose from the charcoal can to the air cleaner. i can see that hose is either very badly frayed in center or somehow joined. not clear. if that hose has leaks in it it could pull air via that into the a/c despite you having your hand over the snorkel.

maybe it can even pull air through the charcoal can?
anyway if i close off my cars snorkel with my hand it will die. but its not running at 3000 rpm either when i do it.

if you wanted to take that hose out of the picture for now you could pull it out of the aircleaner and plug the port on the airbox.

Yes. All these hot garbage hoses need to be fixed or else we’re shooting in the dark and wasting time.