Question about 1983 Toyota Pickup

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My 1983 toyota pickup runs rough and black soot come from exhaust

About week ago i was driving my toyota and it started to run rough and black soot started coming from the exhaust.So I checked the carb and decided to rebuilt it I adjusted the float correctly.When I started it up the engine ran fine until it warmed up and started to run rough and black soot started coming from exhaust.

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  • Anonymous Mar 29, 2014

    black soot on exhaust

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Carb automatic choke sticking closed or your float setting too high causing flooding engine.

Posted on Nov 19, 2009

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Have it checked for free trouble code at Autozone or O'Reilly's . Sounds like a sensor or clogged Cat converter. But it is running rich. The engine temp control sensor or a bad O2 sensor can also cause this.

Posted on Nov 11, 2011

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Well your truck is definitly running rich might be incorect ignition timing

Posted on Nov 19, 2009

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Sounds like its running rich? have you checked all the injectors? maybe one of them went faulty. but I would also check the radiator to make sure theres water in it and you dont have a small leake in the head gasket thus causing more condensation and sutt coming out of the tail pipe.

Posted on Nov 19, 2009

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1 Answer

Black smoke from exhaust, rough idle, black soot on plugs


signs of a bad fuel pressure regulator-- the vehicle will run rough, the engine will not start ( usually in the mornings,) many times engine starts but stalls shortly after starting. a bad regulator can result in fouled plugs. replacement is only cure. 1- black soot on plugs-2-black smoke from tailpipe-3- running rough-4- stalling, good-day! repost if need be.

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I have a 1983 toyota pick up truck with the 22r engine.The problem is it runs rough when it is idling and black soot is coming from the exhaust.I have a manual choke which works fine.I have put a new pvc...


It shouldn't run at all with the solenoid disconnected. That should be 'ON' when the engine is on, or it won't run. Maybe the solenoid circuit is dirty so that it only opens a bit, or the fuel it allows through is limited by a dirty passage. I wonder why the wires were disconnected in the first place. It shouldn't run if that is the case!

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Toyota engines have a built in TSTV- thermo controlled vacuum system where vacuum is applied to the choke system in various levels as according to the temp. of the engine. If the TSTV is faulty or if the vacuum pipes are incorrectly placed then you have a choke which is not opening up properly. Fuel is thus not burnt completely and due to the incomplete combustion there is a formation of soot on your exhaust. Try to get the choke to open up in relation to the temp of the engine. The fuel/air ratio alse needs to be checked ( idle mixture control) once you have the vacuum system working properly.

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My question is this I have a 1983 toyota pickup truck with the 22R engine.About a week ago I pulled out ot my drive way and when the motor warm up it started to run rough and black soot was coming from my...


black soot is a running rich condition it's getting to much gas not enough air .. 14-1 ratio air to gas your carb rebuild needs to be rechecked for sticking float..

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1983 toyota pickup truck runs rough when the motor warms up


It would appear that the Black smoke is unburnt fuel, meaning Spark or timing could also be out. Check you plug and point gaps. If you rebuilt the carby, float level is crucial also check the needle and set to ensure it is shutting off the fuel, if it is not shutting off, it will just flood the engine. Not sure what carby you have but I woud pull out the jets/power valve and replace them. Some carbys have a small ball bearing to control fuel, if that was lost that could be it. Pull up an exploded diagram of the carby and do it again. I know its time consuming, but it will be peace of mind. Good luck

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burning rich. Add SEAFOAM to your tank(at part stores everywhere) to a tank of Premium gas, and add every 3000 miles to fuel. this will help the carbon and running rich problem.

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