Emission help- failed idle test

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Re: Emission help- failed idle test [Re: 4Crawler] #838634 10/04/07 07:34 PM

Joined: Oct 2007

Posts: 49

Cincinnati, Ohio

RustyToy

Getting the Wheeling Fever

I got my dad's 91 camry with 380,000 miles on it to pass by cleaning out the engine with seafoam. And on the next tank of gas I put in 93 octane gas instead of the usual 87. That might help, but I would definately put in the bottle of alcohol too, any octane boost should help the engine burn cleaner. My dads camry wasnt off as much as your 4runner but I thought it might help anyways.

Re: Emission help- failed idle test [Re: RustyToy] #838635 10/04/07 09:40 PM

Joined: Aug 2001

Posts: 2,941

Las Cruces, NM

DRTDEVL

Roll Me Over

Octane booster does NOTHING to reduce emissions... In fact, too high of an octane can actually increase emissions.

All an octane rating tell is the fuel's RESISTANCE to ignition. Too much resistance, and you will have an incomplete burn situation creating more HC.

"A young man who does not have what it takes to perform military service is not likely to have what it takes to make a living." - John F. Kennedy

Proud owner of an 88 Montero (with a blown engine).

Re: Emission help- failed idle test [Re: Frank Torres] #838636 10/04/07 11:44 PM

Joined: Feb 2000

Posts: 456

dknight

Mudrunner

You might want to check with enginbldr to see if he expects that cam to increase idle HC. Sometimes higher lift cams will do that. You've done most of what I'd suggest. I've never tried the magnets - who knows. . .

One other suggestion is to get the engine hot before going in for the test. A cold engine makes more HC. You want it fully warmed up - not just the coolant, you want the whole engine warm - a 20 minute drive at moderate RPM. If there is a line at the testing station, don't just let it idle, rev it up occasionally to keep things warm.

Re: Emission help- failed idle test [Re: dknight] #838637 10/11/07 05:21 AM

Joined: Oct 2007

Posts: 1

emissionless Offline

Need a Spot

Use the MPG Caps they will definetly make you pass you're emissions test they reduce emissions 75-100%. I use them and they really do work!! Check out this link on you tube.http://www.youtube.com/watch?v=YLqVWxxIMfA. If you want more info on this product go to this link. http://www.kbnsons.myffi.biz/en/ or email me John at [email]kb_n_sons@hotmail.com.[/email] Good luck!!

Re: Emission help- failed idle test [Re: Frank Torres] #838638 10/11/07 05:52 AM

Joined: Oct 2007

Posts: 77

Southern Ore.

yota4runna Offline

Getting the Wheeling Fever

High HC means unburned fuel. A fuel mixture that is too lean will cause this. Your CO reading of 0.07 is pretty lean. Look for a vacuum leak, ESPECIALLY an EGR valve that isn't closing completely at idle as it's supposed to. Sometimes they'll get a little piece of carbon on the seat and stick open.

Re: Emission help- failed idle test [Re: yota4runna] #838639 10/12/07 02:30 AM

Joined: Oct 2002

Posts: 153

Cedar Park, Texas

Frank Torres Offline

Wheeler

Thanks yota4runna, that is good info.
And everyone else who chimed in.

No vacuum leak here.
Most likely in my case it's a bad cat and a old Bosch O2 sensor.

...anyway the vehicle is running awesome and I'm getting great mileage, I went to another county to get a inspection sticker.
I'm good till next year. <img src="/forums/images/graemlins/shiner.gif" alt="" />

1991 FJ 80 Land Cruiser for fun.
1998 GS300 for the wife
1998 GS400 for me
1991 Supra SOLD
1986 4Runner 335k miles-22re EB inside.SOLD

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