PsychoGTA

My car didn't pass smog yesterday. Does anyone have any recommendations of a place to get it diagnosis. The guy didn't say anything of having cut-outs in front of the cats. So if you guys know of a place, let me know. Thanx
Peace Out,
PsychoGTA:lala:

PsychoGTA

My car didn't pass smog, when I took it yesterday. Do you guys know of a good place to get it diagnosis? Hey the guy didnt even say anything about the cut-outs been before the cats. Thanx
Peace Out,
PsychoGTA

PsychoGTA

sorry for double posting

Guest

How about posting the results? I'm sure Don can help ya otherwise.

Russ-So Cal

Can you post your numbers here to show why it failed, or did he fail it for visual? If he failed it for visual, he should have told you why.

Parrydise7

iTrader: (1)

Great idea, Russ. Post those numbers, or get them over to Dyno Don.

PsychoGTA

The numbers are horrible.
HC(ppm) Max Ave Meas
15mph 108 31 150
25mph 83 20 148


No(ppm) Max Ave Meas
15mph 767 237 1370
25mph 706 199 1155

As you can see its not just a little either. Everything else I passed
Thanx
Peace Out,
PsychoGTA

Dyno Don

iTrader: (7)

If you failed on both items then it sounds like your catalytic converter is bad. Or, you could have a leaky injector. Putting a new cat on it should be enough to get it to pass.

PsychoGTA

Can the catlyic be bad though I think its been a year and half, I think. That it was installed. How do you check if you have a leaky injector??Thanx a lot, I appreciaite it.
Peace Out,
PsychoGTA

Guest

What about the other numbers, like o2?

Kevin91Z

iTrader: (1)

If you have other problems with your car, yes the converter can go bad quickly.

Two ways to check for a leaky injector. Put a fuel pressure gauge on it, start, the car, verify the reading at 38-44 psi, turn off the engine, and check if the pressure drops. If the injectors are good, the pressure will hold steady. If one is leaking, the pressure will drop.

Or, check each injector with an ohm meter while they are hot (engine off). They should be between 12-16 ohms. Anything less than 10 ohms and its a bad one.

Russ-So Cal

When we built my T/A we put a custom chip in it. We tested it under every condition we could think of, before we burned the "final" chip. I went on the Idyllwild cruise witrh the club and under engine breaking coming down off the hill, my car backfired and blew out chunks of cat. We found that the high vacuum from my mild cam resulted in my engine going extremely lean on the overrun. We have corrected the problem, but the then new cat is history. Anything going wrong that affects your engine's operation can kill a cat. That is one reason why they recommend that you get your car looked at immediately when you get a check engine light.

BretD 88GTA

A little more detailed info. on this. If the injectors are all good, then the psi. will SLOWLY drop - over a period of a few minutes or so. IIRC, it should be around 20 minutes or more. If an injector is leaking, the psi. will bleed down very quickly.

PsychoGTA

Thanx Guys for the help. I appreciate it.