Wont pass smog. 1986 e.f.i. new mufler to tip.

A tune is just replacing the spark plugs every 100,000 miles and the air filter every 30,000, clean oil is also a help in passing smog, the new converter is what will most likely do the trick.

No way to "cheat". Master emissions mechanic is the only solution.

I have 1995 Toyota 4runner v6 automatic 4 wheel drive will not pass smog testit is the CEO percentage is at 2.77 and it's supposed to be at 1.00 what can I do to fix that problem I have to get up plugs wires cap and rotor change the oil filter Oil air filter timing belt just the airflow I also even put it in time what can I do to solve this problem

Check and adjust auto choke setting on carby.

check the engine coolant temperture sensor just replaced mine on a 2001 durango

I would replace CATalitic converter, this car is old, plus a tuneup is 100% necessary , spark plugs wires, ditributor cap & rotor, plus both the air & fuel filters need replaced. change oil & filter. then you will pass emissions test. and your car will run like its suppose too. if you don't do all this , then buy a new car !

Search Google for How to Pass Smog.

too much oil.. if the smog is white its the valvestem seals they are worn out

What codes are you getting?

Is it running rough? Is the check engine light on?