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How do I pass smog with high emission output - Cars & Trucks

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Read your E.Mail

I told you we need facts,test results- gas readings

Get them & use the internet to look up the gases & the
reasons their off

Posted on Mar 29, 2014

6 Suggested Answers

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

  • 141 Answers

SOURCE: HCL too high, did not pass smog check.

ok well this might be a hard one . from what i can gather by the co reading and the o2 reading is that we are running fat. a couple things can cearte this one how many miles do we have on this mtr, two do we have a vacuumn leak? three is the vech going into closed loop? some how we need to get are hands on a scanner so we can look at a data, other wise you are going to be throwing parts at this vech , and thats not the way to fix your problem. the odds are that you may have some lazy o2 sensors you are close. have you tryed running the vech down the road before you go in for the test. the converter is like a hot water heater you have to bring it to operating temp before it will operate correctly. keep me informed

Posted on Dec 23, 2008

  • 1 Answer

SOURCE: 2002 Hyundai Sonata wont pass smog

CA you can take the car to a referree and get a one time waiver if you have spent a minimum of $450 on repairs not including smog fees. Gives you two years to get it fixed. Smog Referee Call Center
Toll Free: 1.800.622.7733
You can also sell the car to the state for "up to" $1,000

Posted on Feb 01, 2009

  • 71 Answers

SOURCE: 92 chevy truck 5.7 idle revs up and down high emissions

sounds like a vacuum leak check hoses and manifold

Posted on Mar 28, 2009

  • 194 Answers

SOURCE: 1991 Honda Accord LX failed emission test on smog

not enough info. Typically, CO and HC together can be the result of poor fuel control or misfire, or worn components such as O2 sensor or catalytic converter, but without more data, repair recommendations are likely to waste money and not achieve success.

Posted on Sep 12, 2009

nvannoy
  • 234 Answers

SOURCE: Having a problem passing a smog test on 1996 Toyota 4Runner SR5 V

NOX is produced when cylinder temperatures exceed 2500 deg. The systems in place to reduce NOX are EGR and the catalytic converter.
If the number is only slightly higher than avg then I would suggest the EGR, make sure that any vacuum lines are attached and that the diaphragm moves freely, be sure not to damage the rubber inside the EGR.
Retake smog test, if numbers still out of range replace the cat.

Posted on Jan 12, 2010

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1 Answer

Pass smog test


change your oil and oil filter. Add a bottle of octane boost to the fuel tank then top off with fuel. Drive vehicle for about twenty minutes then have emissions tested. Unless you have a bad catalytic converter, you should pass emissions.

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High level emission output


Your not providing any Emission Gas Numbers

High Level of WHAT?

You got 5 Gases,what's high & what are the limits
you have to stay within

If you know all that, you can google exhaust gases & read
up on the reasons & solution & print the info & put in a binder,
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Take it to autozone or another place like it and have them read the codes and tell us what they are.

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1986 NISSAN 300ZX FAILED EMISSIONS HIGH CO


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 !

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1 Answer

WONT SMOG


wrong arrangement of piston rings affects intire performance of an engine. and must see that.
have you calibrate your injection pump? and change your injectors?
have a shop with scan-tool diagnose the problem.

Feb 08, 2012 | 2003 Nissan 350Z

1 Answer

Failed smog test


Most modern vehicles have 2 catalytic converters, there may be one located at the exhaust manifold, or be what's called a resonator. The resonator will look almost like a cherry bomb muffler, this is a crucial part of exhaust emissions.

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1 Answer

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did you fail a smog test? if you did... i always pass smog because i always have a new catalytic converter installed .if i was a little over the test, this usually gets me down a little lower and that's passing!

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1 Answer

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a new pcv is only like 3 bucks try having injectors cleaned out

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What does my 77 gmc K20 need to pass CA smog


As far as I know. Anything 1994 and under don't have to go through emissions anymore, just safety. But, like countrysi248 said, it might depend on what state you live in. Best wishes to ya.

Jan 26, 2009 | 1983 Chevrolet Silverado

1 Answer

2002 Hyundai Sonata wont pass smog


CA you can take the car to a referree and get a one time waiver if you have spent a minimum of $450 on repairs not including smog fees. Gives you two years to get it fixed. Smog Referee Call Center
Toll Free: 1.800.622.7733
You can also sell the car to the state for "up to" $1,000

Aug 19, 2008 | Hyundai Motor 2002 Sonata

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