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03-29-2010, 02:22 PM
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#1 |
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Registered User
Join Date: Mar 2010
Location: bayville,nj
Posts: 165
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Failed Inspection
I bring the truck through the local Inspection Station and they slap a Rejected sticker on it. He hands me the paper that said failed it passed everything but Idle Emissions.? HC is suppose to be 260 Mine was 460 not sure what that means.
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03-29-2010, 03:40 PM
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#2 |
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Registered User
 
Join Date: Apr 2005
Location: Medford, MA
Posts: 307
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Re: Failed Inspection
Sounds like it's running rich at idle, too much HydroCarbons (gasoline) out the exhaust. Do you have a catalytic converter on there?
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03-29-2010, 04:24 PM
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#3 |
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Registered User
Join Date: Mar 2010
Location: bayville,nj
Posts: 165
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Re: Failed Inspection
Yes there is a Cat on there I am not sure how old it is but it has one it looks newer.
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03-29-2010, 04:39 PM
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#4 |
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Gettin It One Pice At A Time
Join Date: Oct 2004
Location: everett, washington
Posts: 2,688
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Re: Failed Inspection
When was the last time you did a tune up? When was the last time your idle screws were adjusted? What was the results from last time?
__________________
RIP ELJAY   Work In Progress 1979 GMC C1500 Trailering Special. Getting the truck done, one piece at a time. “You can tell a lot about a fellow’s character by his way of eating jellybeans.”Ronald Reagan “I don’t know the key to success but I know the key to failure is trying to please everybody.” Bill Cosby |
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03-29-2010, 06:53 PM
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#5 |
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Robert Olson Transport
 
Join Date: Oct 2002
Location: recent transplant to NC USA
Posts: 20,284
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Re: Failed Inspection
i can recommend a shop in old bridge if you need one
__________________
Bob 1951 International running on a squarebody chassis "If a man's worth is judged by the people he associates himself with, then i am the richest man in the world knowing some of the fine people of this board" http://67-72chevytrucks.com/vboard/a...t.php?f=25&a=9 (you can review the site rules here!) PM Me for your vehicle/parts hauling needs in the North East US or see my Facebook page Robert Olson Transport Live each day to the fullest.. you never know when fate is going to pull the rug out from under you... I hate cancer!! |
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03-29-2010, 08:07 PM
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#6 |
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BMW & ASE Master Certified
Join Date: Feb 2004
Location: Houston, Texas
Posts: 1,262
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Re: Failed Inspection
if you know how to lean it out a bit you can reduce your HC's that away... but if you lean it out too much you will raise combustion temps and that will raise NOx.... too much of that and you'll fail.
__________________
1987 Silverado - L83 5.3 w/ 6L80e ,A/C,P/W,P/L,TILT, HID projectors, Wilwood C-10 Pro Spindles w/ 2018 silverado front brakes & C-5 Corvette Rear Disc Brakes 1999 BMW 528i - 5.7 LS1 w/ 4l60e, Ford 8.8 IRS w31 spline posi & FX-r projector retrofit New project: 2006 BMW x5 6cyl AWD to L83 6l80e 4wd to 2WD / RWD A poor man buy's it twice finally got my domain name back, 87chevy.com.... site rework in progress |
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03-29-2010, 08:12 PM
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#7 |
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Registered User
Join Date: Mar 2010
Location: bayville,nj
Posts: 165
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Re: Failed Inspection
It was tuned up recently I did plugs wires cap rotor PVC I did lower the idle?
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03-29-2010, 09:41 PM
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#8 |
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BAD BOW-Silverado XST
Join Date: May 2000
Location: Senior Member from Austin, TX
Posts: 6,431
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Re: Failed Inspection
Run a can of Seafoam through it. Once it's all burned up, take for a spin. Open it up a little. Get all the loose carbon out. The cat should be really hot when tested. Check EGR operation. What year and engine?
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03-30-2010, 12:02 AM
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#9 |
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Registered User
Join Date: Feb 2008
Location: Avondale, Arizona
Posts: 54
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Re: Failed Inspection
If you dont want to spend alot of money then, pour in some denatured alcohol, about two cups per gallon and you should pass no problem just make sure you fill the tank up afterward to dillute the alcohol thats left. My motorcycle did the same thing wouldnt pass the idle test, so I had about two gallons of gas and put two cups of alcohol in the tank about a mile away from the test station and it passed with flying colors, then went and filled up the tank and no problems. It dropped my readings in half!!!!
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03-30-2010, 08:13 AM
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#10 |
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Registered User
Join Date: Mar 2010
Location: bayville,nj
Posts: 165
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Re: Failed Inspection
Interesting I hear alot of people say they like Seafoam is it good to use how often do you guys use it.?
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03-31-2010, 09:58 PM
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#11 |
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Senior Member
Join Date: Apr 2005
Location: metro Phoenix, AZ
Posts: 241
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Re: Failed Inspection
Howdy
Rumor has it that E 85 is a wonderful thing IF your fuel system isn't trashed by it! |
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