What is the right tuning of the carburetor of mitsubishi lancer box type 1987 model

have a check n the fuse box under right hand side of the dash the fuse box cover will have a diagram to where the fuses are

carbs are tuned for you altitude. (what country?)
is car still stock, many are not. not this old.
and to tune it takes a 5 Gas Analyser or AFR meter.
once tuned , the Cat converter cleans up the retainer,
the full manual is here, for USA.
http://www.acksfaq.com/sitemap.htm

since carburetors were replaced by fuel injection, about 1991, just about all gasoline fuel pumps were moved inside the gas tank and are electric.

It will be in the fuse boxe under the hood if you have the car manual that every car has if not look under the hood to locate it,& on the under side of the cover will show you the right relay.

I would get the engine checked.Not the air/con.The air/con takes about 2 horsepower so if your motor has a big drop in power when you turn it on.Check the motor tune.Hope this helps

hi follow the air filter from the filter box, go towards the engine you should find a rubber type flexi hose, then a hard plastic part with a wire on it that is the maf...hope that helps

good day Sir, try to check the battery and the voltage regulator i hope this tips will help you.

The Mitsubishi Mirage is a subcompact car produced by Mitsubishi Motors from 1978 to 2002. It was also sold as the Mitsubishi Colt or Lancer.

The following wiring diagram and electrical circuit/schematics manual provide detail information about the electrical system description, illustration and troubleshooting of Mitsubishi Mirage 1999 models: Mitsubishi Wiring Diagram

Hope helped.

As far as i know, original stock carburetor for Lancer 1989-1992 engine 4G15 12 valve is Aisan Variable Venturi. It have 3 screws :
- air-fuel mixture screw
- main jet adjusting screw
- idle adjusting screw

and here's the document you may need :
http://www.mitsubishi-motors.kiev.ua/info.php?id=20
http://www.lilevo.com/mirage/

Good luck !
Winz

24 months is the recommended replacement interval if the car is running properly......