1984 Toyota Tercel will only idle with accelerator fully depressed?

My 1984 Toyota Tercel 4WD Wagon will start, but will only idle(rather roughly) with accelerator fully depressed. Occasionally the revs will start to build, emitting large amounts of black smoke from exhaust pipe.



I have replaced fuel filter and fuel pump (thanks Daddio-T!), but still no results.



This car sat for a few years without being driven, but had the gas tank flushed out and has been running for about a year and a half. Help!1984 Toyota Tercel will only idle with accelerator fully depressed?black smoke is a fuel thing so either its lack of or too much.. what might be best for it it to have the fuel system flush somewhere like jiffy lube or quick lube place many shops can do it something you can not do for it has much as it needs a bottle of fuel treament will not help you much1984 Toyota Tercel will only idle with accelerator fully depressed?Maybe it needs a new alternator? I had the same problem with a previous car.1984 Toyota Tercel will only idle with accelerator fully depressed?you might want to consider an IAC valve, there very common on older models toyotas, i worked at toyota for 6 months and now at lexus for 2.5 years, the black smoke doesnt pertain to anything burning, just the carbon being displaced.





ps get a oil change too, wouldnt hurt to redrain and fill it again to flush it out1984 Toyota Tercel will only idle with accelerator fully depressed?
it sounds like your not getting fuel to the engine or have a weak fuel pump pull off the supply line to the engine and see how much is making it