Hi Gary,
It appears you are running a bit to the lean side. You might try a new O2 sensor if you already haven't replaced it. The cat
doesn't remove nox. Maybe you have one cylinder running lean. Check the plugs, they may show the lean cylinder. Try some gasohol
if you have any over your way, or some injector cleaner that will clean out the injector system.
Darrell
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----- Original Message -----
From: "Gary McEachern" <glmce@...>
To: <subaruvanagon@...>
Sent: Saturday, January 13, 2001 1:25 PM
Subject: [subaruvanagon] Failed emissions inspection!
Hello SubaVolks
I took my van to be inspected today and failed the mass enhanced emissions
test! Boy was I surprised because the suby engine runs and smells so much
nicer than the VW engine. The test was run as if the engine was the VW
waterboxer. The emissions are read with the van driven at speed on a
dynamometer.
HC was 2.37 with a limit of 8.25
CO was 51.38 with a limit of 94.36
CO2 was 753.49
NOx was 10.45 with a limit of 9.27!
I'm running the original VW exhaust components (cat and muffler). I suspect
the Cat is bad.
I haven't hooked up the test light to read out the ECU error codes yet. I
plan to do this later today or tomorrow.
Can anyone tell me what typical readings should be for this engine using the
VW exhaust?
Any suggestions will be greatly appreciated.
Gary
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