here are readings

hc: 239 (limit: 76)
co%: 9.39 (limit: 0.42)
no ppm: 229 (limit: 848)

What should i do guys i know i always got strange problems...

any suggestions

First search the archives.

Dino,

Start with Mike's suggestion...

..then where is the other set of data? You should have an idle test and a running/load test.

there's no way you should be getting HC and CO readings that high with a newly built engine.. looks like there is WAY too much fuel getting in there. But I have no idea of what you did when you converted your NT to a Turbo, other than realizing you would have to swap the engine and the ECU.. How's the car running? (I'd probably expect "not well") Is your firing order and timing set right? How about your O2 sensor? The catalytic may have a 'small' part in this, but it wouldn't be where I'd start with numbers like that

looks like something's either busted, or out of adjustment.

[ December 13, 2001: Message edited by: Craig Watson ]

I exhausted all my knowledge about high HCs (very little ) in <A HREF="http://www.ca.dsm.org/cgi/ultimatebb.cgi?ubb=get_topic&f=7&t=001614">Len's thread</A> about the same problem (roughly).

Sounds like he just needed his timing properly adjusted, although he was much closer to the limit.

[ December 13, 2001: Message edited by: Jeff Mitchell ]

Judging by your readings.....something is really wrong. Do you have a garden hose connected right into the intake manifold pouring gas in?

Lots of black smoke?

Plugs, wires, timing, O2 sensor, catalytic, intake leaks etc etc. (im probably missing a few)

Craig:They don't give us "dyno" guys the results of the idle test.. just one set of results.

I would agree that there is something DRASTICALLY wrong here.

With no cat, and a steady miss during the test my resluts were better than that..

HC:90, CO: 0.70, NO: 1074

From what I know about emissions (ie: not much) I would agree that the car is running WAY too rich.. Have you checked the 02 sensor?

Heres another question

Hows your gas mileage?

You should check the timing but the cat has to be a empty can to get a reading that high. Is it running real hot?

[ December 13, 2001: Message edited by: Tony Spelchuk ]

looks like u are running rich...

is there any chance you might still be using the N/T MAS? Tony said he was running rich until he changed to a turbo MAS.

No no Jeremy i'm running Turbo Maf but i'll try to get a/f ratio gauge first and see what heppens i think i got big vacume leak also i'll check the o2 sensor..

Also wanna know is there difference between turbo and nt o2 sensors maybe thats why i'm running too rich...

Dino,

!! if you have a vacuum leak look into that first !! this could be contributing to your problem if it's not the source of your problem.

you don't necessarily need an A/F gauge, you could make it by with a digital multi meter if you have on (just hook the positive lead of the meter to the O2 sensor 'plug' and ground the other lead)

I'm personally not sure if there's a difference in the 02 sensors. Maybe someone else does?

[ December 14, 2001: Message edited by: Craig Watson ]

Thnaks Craig, the car was stalling at idle until i clean the thortle body after that its feelnow doesnt stall at all at the lights, then i cannt fill if there is a vacume leak but i'm assuming there is one...So i got to go all over the intake manifold to check for vacume leaks and also check the o2 sensor i got the digital voltmeter so i hope its not gone if its gone got to go with turbo one vire o2 sensor because i think there is difference....

Thnaks a million craig hope this is going to solve problem...

[ December 14, 2001: Message edited by: Dino Mustedanagic ]

If he's got a vacuum leak, wouldn't he be running lean?? ie: sucking in unmetered air, not losing it...

I think it would be the other way around...it would be losing metered air...the ecu will have calculated the amount of fuel to put in for the amount of air at the maf, then some of the air is leaked out and your car would be running too much fuel when compared to the amount of air that has gone into the engine

It really depends where your leak is. I know there is a vendor that sells intake pipes with extra little ports to suck in unmetered air and lean it out.

A leak post turbo (since it's under pressure) will usually force out metered air and make you run rich like Edwin said.

ok, thought about it a little more, and we're all right. sorta..

I was thinking after the throttle body.. (ie: injector insulators, or intake manifold gasket, one of the actual vacuum lines..."vacuum" leak got me thinking along those lines..)

One between the turbo and throttle body (intake leak)is MUCH more likely though, which would make him run rich..

Well, start with a pressure test I suppose...

[ December 14, 2001: Message edited by: Steve Kinnaird ]

Guys i was searching through the vfaq and i found that i dont have the ground conected to the down pipe could this effect the mixture for the o2 sensor....

Thanks

Most definatley!

It will make you run really rich! There's a good chance that's your problem...

the co reading is huge, do not idle your car in
enclosed spaces, I am not kidding
that is high enough to cause co poisoning in just a few minutes. If you were to idle a 9% co car
in a closed garage you would probably be dead
in 5-10 minutes. I am not joking contact the emissions test place to verify this

Man, that reminds me of Jeff's car at the dyno, we couldn't even open our eyes and the dyno guy (who was driving) was dying inside the garage...

[ December 17, 2001: Message edited by: Edwin Lau ]

[ December 17, 2001: Message edited by: Edwin Lau ]

heyy guys some good news...

o2 sensor was gone the reading was 0.013 volts

after replacing o2 sensor it was reading 1.6 to 1.7 volts then changed the injector gaskets or o- rings and it came down to 1.4 still high right so what else can i look for to get it down to 1.0 volt

[ December 17, 2001: Message edited by: Dino Mustedanagic ]