Question about 1992 Honda Accord

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ASM EMISSION TEST RESULTS TEST @ 1800 RPM CO2 (%) MEAS14.38, O2 (%) MEAS 0.46, HC ( PPM ) MAX 81 AVE 34 MEAS 107, CO (%) MAX 0.74, AVE0.14, MEAS 0.54, NO ( PPM ) MAX 554 AVE 269 MEAS 875 RESULT FAIL. TEST @ 25 MPH RPM 2868 CO2 ( % ) MEAS 14.57, O2 ( % ) MEAS 0.31, HC ( PPM ), MAX 63 AVE 26 MEAS 65, CO ( % ) MAX 0.62 AVE 0.10, MEAS 0.36, NO ( PPM ) MAX 511, AVE 206, MEAS 858 RESULT FAIL!

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Posted on Jan 02, 2017

YellowNo5
  • 268 Answers

SOURCE: 1991 Honda Accord LX failed EVAP test. The ASM

Things to consider or replace...

If you are getting a Check engine Light let me know, it will make things easier to diagnose.

Catalytic Converter
Oxygen Sensor
EGR Valve

Posted on May 17, 2010

  • 834 Answers

SOURCE: failed smog check

How well does the vehicle run?

Assuming that the engine did pass the EGR function test on the emission test results, and the MIL (Malfunction Indicator Light) or check engine light is not on when the engine is running, and if you are not sure when the last time it was that the engine had a complete tune-up, with distributor cap, ignition rotor, spark plugs, spark plug wires, air and fuel filters, then a complete tune-up would certainly help, and if the engine oil and oil filter have not been changed in a while, then they should also be changed before an emission test because long used engine oil traps carbon and it will show up as higher CO on the emission test because the emission analyzer will be able detect the higher CO from the engine oil through the PCV valve.

However, it would seem from those HC readings that there is a vacuum leak, and carefully inspect all of the vacuum lines for any cracks or damage, (especially the vacuum line to the fuel pressure regulator) because cracks in the vacuum lines seem to like to hide underneath the lines.

The emission label under the hood should have the vacuum line routing diagram printed on it, and the vacuum lines should all be checked to be certain that they are all connected correctly.

Here is the firing order diagram for that vehicle to help assist you tune-up the vehicle.


e696e87.jpg

Posted on Jul 10, 2010

  • 158 Answers

SOURCE: My 1997 Honda Civic failed

Jose, I don't know if this will give you the answer you are looking for because there are many things to consider here. The exhaust gas recirculation valve (EGR) is one of the main things involved in reducing NO emissions. This valve is controled by the power control module. (PCM) This is your vehicles computer. The PCM monitors the vehicles speed and will command the EGR to open when the vehicle attains a certain speed, which is why the ASM test being done is recorded at two different speeds. At 25 MPH your vehicle failed the hydrocarbon (HC) emissions limit and this could be for a number of reasons. When is the last time you car was tuned up? Old spark plugs, wires, clogged air filters, oxygen sensors, leaking injectors (personal experience) or the PCV valve could be contributing to the results of the test. I guess that the easiest way to go is to tune up the engine replacing the spark plugs, wires, air filter and the PCV valve and don't forget to have the oil changed at the same time. Only then should have the vehicle retested and see what the results are. Should it fail again you may have to consider having the EGR or the catalytic converter replaced depending on what portion of the test fails. If the NO fails I would consider the EGR. If the HC fails then I would consider the catalytic converter. Good luck with this.

Posted on Apr 05, 2011

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2 Answers

Emission test failed HC (PPM)


i can be, only 2 things, or both.
1: engine running way too rich.
2: dead cat.
(both happens, too)
replace the cat, might be cheaper that full engine diagnosis and repair.
in a real shop we test the cat. using up and down stream tests.
with the 5 gas analyser.
but the truth is a new CAT can hide a very filthy running motor.

Mar 12, 2013 | 1995 Geo Prizm

1 Answer

I have 1998 GMC k1500, I took it in for Smog test in California,


slite posibility of head gasket leaking a little or could be a worn piston ring you have changed every thing else

Sep 02, 2012 | 1998 GMC Sierra

1 Answer

1985 Plymouth Voyager 2.6 L failed NOX emission test


1) please RUN the scanner and computer test from any repair shop you must get the exactly faulty in your emission system
2) However you can go to the www.automecanico.com+ www.autoelectronico.com this sites is in spanish, but you can translate with your web browser and I Higly recomend because has Powerful information update for any cars models, Try it and fix it.
God bless you

Jul 09, 2012 | 1985 Plymouth Voyager

1 Answer

1989 Toyota 22re fails California Emissions Test. Rebuilt the engine 20K or so miles ago. Has passed most tests with just a little bit of timing adjustments. At 15 MPH, (1670 RPM) HC measures 153...


HC is hydrocarbons or unburnt fuel.(raw fuel ).NO no such gas measurement.did you mean CO this is carbon monoxide or incomplete combustion.(all the fuel is not being burnt).if you mean NOX this is nitrates of oxide and is related to a heat problem.(motor running hot,bad catalytic converter).its probably getting too much fuel and not burning it all,possibly tune-up problem,carburetor(if it has one),bad fuel injection system(dirty injectors),computer(if it has one)may be getting a wrong signal.these are in reference of high HC and CO.for high NOX cooling system not keeping motor cool enough,cooling fan problem(weather clutch fan or electrically controlled cooling fan),poor cooling system circulation,bad catalytic converter.not a running lean problem as the other gases indicate rich problem.the converter may not be able to convert the emission gases to H2O and CO2 out the tailpipe.

Apr 24, 2011 | 1989 Toyota Pickup SR5

2 Answers

My 1997 Honda Civic failed it's Emissions Test. See below the ASM Emission Test Results. What do you suggest I do to get the car to pass the smog test? ASM Emission Test Results: 15mph - RPM = 1587...


Jose, I don't know if this will give you the answer you are looking for because there are many things to consider here. The exhaust gas recirculation valve (EGR) is one of the main things involved in reducing NO emissions. This valve is controled by the power control module. (PCM) This is your vehicles computer. The PCM monitors the vehicles speed and will command the EGR to open when the vehicle attains a certain speed, which is why the ASM test being done is recorded at two different speeds. At 25 MPH your vehicle failed the hydrocarbon (HC) emissions limit and this could be for a number of reasons. When is the last time you car was tuned up? Old spark plugs, wires, clogged air filters, oxygen sensors, leaking injectors (personal experience) or the PCV valve could be contributing to the results of the test. I guess that the easiest way to go is to tune up the engine replacing the spark plugs, wires, air filter and the PCV valve and don't forget to have the oil changed at the same time. Only then should have the vehicle retested and see what the results are. Should it fail again you may have to consider having the EGR or the catalytic converter replaced depending on what portion of the test fails. If the NO fails I would consider the EGR. If the HC fails then I would consider the catalytic converter. Good luck with this.

Apr 05, 2011 | 1997 Honda Civic

1 Answer

Failed smog check


How well does the vehicle run?

Assuming that the engine did pass the EGR function test on the emission test results, and the MIL (Malfunction Indicator Light) or check engine light is not on when the engine is running, and if you are not sure when the last time it was that the engine had a complete tune-up, with distributor cap, ignition rotor, spark plugs, spark plug wires, air and fuel filters, then a complete tune-up would certainly help, and if the engine oil and oil filter have not been changed in a while, then they should also be changed before an emission test because long used engine oil traps carbon and it will show up as higher CO on the emission test because the emission analyzer will be able detect the higher CO from the engine oil through the PCV valve.

However, it would seem from those HC readings that there is a vacuum leak, and carefully inspect all of the vacuum lines for any cracks or damage, (especially the vacuum line to the fuel pressure regulator) because cracks in the vacuum lines seem to like to hide underneath the lines.

The emission label under the hood should have the vacuum line routing diagram printed on it, and the vacuum lines should all be checked to be certain that they are all connected correctly.

Here is the firing order diagram for that vehicle to help assist you tune-up the vehicle.


e696e87.jpg

Jul 09, 2010 | 1997 Honda Civic

1 Answer

1991 Honda Accord LX failed EVAP test. The ASM Emission Test Results showed Test 25mph RPM 1933, %C02 MEAS 14.60, %02 MEAS 0.22, HC (PPM) MAX 61, GP 236, MEAS 19, CO (%) MAX 0.60, GP 2.10, MEAS 0.02, NO...


Things to consider or replace...

If you are getting a Check engine Light let me know, it will make things easier to diagnose.

Catalytic Converter
Oxygen Sensor
EGR Valve

May 17, 2010 | 1991 Honda Accord

1 Answer

MY CADILLAC DEVILLE 1997 DONT PASS SMOG IT FAILED THE HC (PPM) THE MAX WAS 47 THE AVE WAS 9 ND THE MEAS WAS 140 AT 15MPH AND AT 25MPH THE MAX WAS 31 AND THE AVE WAS 7 AND THE MEAS WAS 127.. CAN YOU TELL ME...


i'd start with a complete tune up. plugs, wires, pcv valve, gas and air filter. what engine code are you getting? normally vehicles 1996 and newer get a obd (computer) emissions test not an asm (tail pipe) test. and perhaps a new catylitic converter and oxygen sensors

Apr 17, 2010 | 1997 Cadillac DeVille

1 Answer

I have a 1991 chevy pick up with a 5.7l it failed the test 2


You did not post the odometer reading on the van but base on the year it should has over 85,000+ miles on it.

The most likely source of the high Hydrocarbon (HC) is clogged or drippy injectors.

Change the fuel filter if it is over 48K miles.

Ran two or more tanks full of Chevron gas will help clean out the fuel system.

====

The air fuel ratio can be off is the air filter is clogged or the mass air flow sensor give incorrect data to the computer (ECU).

Change the air filter is it over 20,000 miles or you can see sunlight though it.

Use CRC Mass Air Flow cleaner or electronic part clean to gently clean the mass air flow sensor.

==========

Change the oil to 20W50 or one grade higher to prevent blow by.

You current motor oil is soak with HC from blow by.

=======

Make sure the tires are at 32 psi

=======

Do the smog test is a COLD morning?

=======

REMOVE excess cargo off the van.

=======

These are little things that I would do.

If the HC is still high at 25 mph then you will need a professional fuel injector cleaning or replace the injectors.


Please post more data on the third smog test on the comment window.

Mar 12, 2009 | 2002 Toyota Sienna

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