mwling

Inspection failed, im thinking of setting my car on fire and collecting the insurance.

1995 Civic EX 1.6 VTEC D16Z6

Here are the readings on first test.

High Speed Emission Results (RPM 2040)
Standard Current Reading
HC(ppm) (147) (866)
CO(%) (.82) (2.05)
CO2(%) 15.2
O2(%) 20.3
NOX (ppm) (1072) (345)
DILUTION(%) (>6.0) (17.4 )

Low Speed Emission Results (RPM 1862)
Standard Current Reading
HC(ppm) (152) (979)
CO(%) (.82) (13.20)
CO2(%) 28.30
O2(%) 20.39
NOX (ppm) (1186) (433)
DILUTION(%) (>6.0 ) (41.50)

Car has no check engine light, it idles at 600-700 rpms. The engine sounds perfect and drives nice and no smoke out back. Heres a list of what was done to it after reading these fourms.


Spark Plugs
Spark Plug Cables
Distributor Cap and Rotor
Fuel Injectors
MAP sensor
Coolant Sensor
Ignition Timing
Valve Cover
Valve Cover Gasket
Valve Cover Spark Plug Gaskets
Valve Cover Bolt Thread Repair
Intake Manifold Gasket
Exhast Manifold Gasket
Head Gasket
Oil Filter
Oil Change
Coolant Flush and Bleed
Air Filter
Catalytic Converter
Vacum Hose Inspetction
Throttle Assembly Gaskets
TPS Replacement and Adjustment
Thermastat Replacement
Thermastat Gasket


After all this was done here are the results of test 2.

High Speed Emission Results (RPM 1466)
Standard Current Reading
HC(ppm) (147) (236)
CO(%) (.82) (2.93)
CO2(%) 8.80
O2(%) 6.14
NOX (ppm) (1072) (772)
DILUTION(%) (>6.0)

Low Speed Emission Results (RPM 1862)
Standard Current Reading
HC(ppm) (152) (549)
CO(%) (.85) (5.72)
CO2(%) 7.90
O2(%) 5.87
NOX (ppm) (1186) ( 80)
DILUTION(%) >6.0

The inspector after put the sniffer into the gas tank and the hc shot to 5500 hc. He told me the car is running to rich.

Ive spent around $600 on parts and alot of time please tell me what im over looking.

Thanks in advanced!

Former User

Please post the actual emissions sheets.

However, right off the bat, I notice very high O2 levels, which indicate an exhaust leak.

mwling

Here are the images of the test results they gave me.


First test pictures

http://s14.postimage.org/yhoakt2yp/2...6_19_40_42.jpg

http://s8.postimage.org/wv9iezj39/20...6_19_40_31.jpg



After repairs pictures on DYNO

http://s13.postimage.org/5q9ncilo7/2...6_19_41_54.jpg

http://s7.postimage.org/mfcf13qi3/20...6_19_41_59.jpg

aavtec

Haven't tried this but its in my bookmarks just in case http://hondaswap.com/members-lounge/...ssions-501184/ Looks like a solid writeup. If you give it a try please post your results.

mwling

I research the same thing. I would like to find the cause of the problem at this point. Never less I plan on trying this as a last resort.

Former User

This^ is causing the engine to run rich.

Bix VT

I see you replaced your exhaust manifold gasket. Check to make sure it's sealed properly, then check the rest of the gaskets between the manifold and the cat. I had a failed doughnut gasket that caused a similar issue for me.