There are many reasons why the engine and the emission systems fails a smog check. If you go to this page it will give you ideas on how to pass the test next time around.
SOURCE: 1991 Toyota Previa
Please crank the engine again, and then remove all 4 spark plugs. Examine them & repost exactly what you see on the plugs.
SOURCE: 1985 toyota pickup.22r,automatic trans,2 barrel
There ar two thermo vacuum switches on the intake manifold,one in the center top by the EGR pipe right next to the valve cover,and one center bottom on the outside right below the carburator,it may be that one of them is not fully opening/closing when the motor is cold.I'm not sure on this as I've never had this problem with my 22R's,hopefully this will point you in the right direction,if you want comment back and I'll research this further(it's 5 in the morn and I cant access my 22r manual)
SOURCE: i have a 19991 toyota previa. the oil level light
Have u checked the oil's stickiness & color? It could be its telling you to change the engine oil.......sodeep
SOURCE: 91 Toyota Previa AWD - Swap original engine for Previa Supercharged engine
I do a lot of work on Toyota Previa before; including rebuilt engine, swapping engine and transmission and lot of things in between, but never swap a normal aspirated engine to a supercharged engine or diesel. Since i have some experience in Previa, I would like to share my opinion with you regarding your plan to swapping the normal aspirated Previa engine to a Supercharged engine. When you do a swapp like that, you will not only be dealing with just swapping engine, but some wiring, computer, throttle body, air cleaner assembly, extra frame and pulley on the accessory items, transmission as well as a right rear end to get the correct gear ratio to accomodate the new engine and transmission. I can go on even more, but let me tell you this, beside less headache, it would definitely cheaper if you were to find a Supercharged Previa and fix it up. However, if you are totally motivated to do this project, keep in mind, this engine swap will be a long term and time consuming project.l I wish you best of luck and have fun!
SOURCE: where is the fuse box located on a 1991 toyota
Directly above the radio at the top of the dash. Release lever at top of & center of heater controls will release cover. The cover is about 8 inchs square.
Testimonial: "When you buy a used car the first thing you look for is service areas. Knowing where they are located is not always easy on imports with out a manual"
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