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Posted on Nov 01, 2010

I just tried to smog my 1988 mitsubishi mighty max, my hydro carbon levels were high. What would cause this?

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Alfredo Rios

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  • Contributor 21 Answers
  • Posted on Nov 01, 2010
Alfredo Rios
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Joined: Jan 13, 2010
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I just bought a 1988 Mitsubishi Mighty Max it failed smog due to tail pipe smoke when you you Rev it up and egr function fail how do I fix it so i can smog it I know it burns a little bit of oil

You could rebuild it. stop the burning oil( this is a fail). Or dump it and upgrade your vehicle. Another option is to move to a place that doesn't have emissions testing.
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What years are the windshield for a 1990 Mitsubishi mighty max interchangeable?

Mitsubishi Mighty Max Parts & Accessories - JCWhitney

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Why is the reasont it didn't want to pass smog on the 15 mph it was to high on 1994 Mitsubishi mighty max 2.4 v4

No idea
CO-- I would Guess failed ?

What where the Emission Gas readings?
What is the standard to pass at your location?

You can Google exhaust gases & study what causes
the gases that were to HI & cause the vehicle to fail

Could be any number of things from a dirty air filter,dirty oil,
neglected ignition system,old failed exhaust converter,etc

You ALWAYS work on ALL Vehicles for a few days BEFORE
you go to inspection,then again, if they fail, using the exhaust
gases as your guide to resolving the area or system with the problem
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My 1988 Mighty Max is smoking from the exhaust. ..

Does the smoke go away soon after starting? If so then your valve stem seals are worn out. If it smokes all the time then the piston rings are worn. Oil fouled spark plugs will cause starting problems.
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1988 MITSUBISHI MIGHTY MAX/S rebuild the carburetor?

Hardly anybody rebuilds carburetors any more. If you can even find a carburetor kit for the thing, there should be an instruction manual included in the rebuild set.
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My 1988 Mitsubishi Mighty Max 2.0L, Auto, 183,500 miles. Just had the head gasket replaced in 2008 and rebuilt the carb in 2007. Now I notice in the mornings first start (cold engine) it runs real rough...

pull off ur egr an clean it or use a small bit of plate and exhaust paste and blank it it ill do her no harm but at least itll show if the valve is faulty r not
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I have a 1988 mitsubishi mighty max, and it smokes when you first crank it, but also has some hesitation when driving down the road every not and then, and i noticed last night that, it did not have an air...

yes you should. use a small brush first and try to clean in behind the throttle plates inside as much as possible. then start the car, it may take a minute but it will start. then rev it up and spray some in the throttle. put a filter on it
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My mighty max idles around 2000 rpm's. I tried adjusting the idle control, the spring on the intake that has a screw and the screw on the top of the unit. It still revs vary high. what else can cause it to...

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