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chuck
11-18-2005, 03:53 PM
took my 91 MR2 for emissions today and failed awfully...


for the 25/25 test i got 224 with an allowed 132 for "HC ppm"
5.36 with an allowed 0.73 for "CO %"

for the 50/15 test i got 232 with an allowed 136 for "HC ppm"
5.16 with an allowed .76 for "CO %"


...this is all running on a j-spec 3SGTE, 3 inch exhaust and a walbro 255 fuel pump. i'm assuming from the numbers and smell that i'm running quite a rich fuel mixture. could it be as simple as just turning down the pressure of my fuel pressure regulator? if so, how many psi do i need to set it at? right now its reading 15 psi at idle and somewhere around 17-20 when in mid RPM's


any ideas?? could it be from not enough air?? the car has gotten only about 60-70 miles since april, i've driven it back and fourth to school the past couple days and i drove it 30 miles (gainesville->lawrenceville) before the test today.
mocha latte cupcake
11-18-2005, 03:54 PM
cats are your friend....sorry chuck.
chuck
11-18-2005, 03:56 PM
cats are your friend....sorry chuck.

i have one of the two cats, could it be bad??? i don't even know what the HC ppm and crap all mean...
mocha latte cupcake
11-18-2005, 03:57 PM
shiz dude neither do i, i would say watch your fuel, and see if that other cat is gutted... if it is, run to a junkyard and see if you can find a good one.
chuck
11-18-2005, 03:59 PM
what you mean by watch my fuel??? how can i tell if the cat is gutted??? i just talked with the previous owner and he said he didn't gut it may very well be non the less....

could old gas give the same symptoms as running rich???
chuck
11-19-2005, 11:20 AM
...anybody??
Vuongy_Dong
11-19-2005, 11:32 AM
pm me if you want it to pass.
chuck
11-20-2005, 06:55 PM
could a boost leak in the I/C cause me to run rich too???
Type-R
11-20-2005, 08:48 PM
what you mean by watch my fuel??? how can i tell if the cat is gutted??? i just talked with the previous owner and he said he didn't gut it may very well be non the less....

could old gas give the same symptoms as running rich???

If your cat was gutted you could simply look inside and see that it's empty :-)

Mine is

Screw emissions
chuck
11-21-2005, 08:00 PM
If your cat was gutted you could simply look inside and see that it's empty :-)

Mine is

Screw emissions
damnit, why didn't i think of that...let me go get some x-ray glasses and check it out...
Bishop
11-21-2005, 08:18 PM
take is off dumbass
chuck
11-21-2005, 09:03 PM
take is off dumbass
just because that line works for you with the 12 year old boy down the street doesn't mean you have to keep trying it on me craig...
Bishop
11-21-2005, 09:14 PM
just because that line works for you with the 12 year old boy down the street doesn't mean you have to keep trying it on me craig...
Shit, you got me.
uproot
11-21-2005, 09:19 PM
was your car all warmed up before you took the test?
Bishop
11-21-2005, 09:26 PM
he drove it 30 miles before the test
Type-R
11-22-2005, 05:05 AM
damnit, why didn't i think of that...let me go get some x-ray glasses and check it out...

Well assuming you are not mechanically inclined then I'd have to say that all you need to do is get some jack stands for the front of your car, unbolt the cat and header, grab your flashlight and look inside. Will take you less time to do that then it did to make that childish remark.

/lick
chuck
11-22-2005, 11:48 AM
Well assuming you are not mechanically inclined then I'd have to say that all you need to do is get some jack stands for the front of your car, unbolt the cat and header, grab your flashlight and look inside. Will take you less time to do that then it did to make that childish remark.

/lick
emmmmmmmmm
arrrrrrrrrrrrrrrrrre
toooooooooooo

stands for Mid engine, Rwd, 2wd...its not as easy as just dropping down the cat and taking a glance inside. with everything in i can hardly see it and just barely touch it with a finger...much less knock on it, look for cuts/welds, or unbolt it real quick and take a glance inside.
chuck
11-24-2005, 12:03 PM
also, i just realized that my O2 sensor was unplugged during the test...this may seem like a stupid question but would that make the motor run rich??
Jon00
11-24-2005, 03:03 PM
also, i just realized that my O2 sensor was unplugged during the test...this may seem like a stupid question but would that make the motor run rich??

yes it will
nofive-0
12-04-2005, 10:28 PM
haha

jdm=no egr, no carbon can and oh yea NO EMISSIONS CRAP
sorry had to

yes an unplugged 02 sensor will make your car run insanely rich
I assume you didnt do this swap.

If you still dont pass, which you probably wont get a new cat and a fpr. lean it out as much as you feel safe to do. THIS IS TEMPORARY FOR EMISSIONS ONLY. do not drive alot with low fp and definitely hard. other than that ur not gonna pass without emissions equipment.