failed inspection

[Mrdjc]

hey guys just the other day i failed my inspection sticker and wanna get some ideas on what it could be. I have an aftermarket BOV that does vent to the air and an aftermarket intake. After i failed i replaced the oxygen sensor up front and the cat but it still failed with some pretty bad numbers. My car also has very weak torque when taking off from a start at low rpms idk if that could have anything to do with it but thought i might as well add it in to give a little insight. Any ideas would be greatly appreciated!

 

[Mrdjc]

You are correct johnmarines, I just had not one clue what it was called and I will post the numbers soon I left them in my car at the shop so ill go get them in about an hour to see what they say

Ll hawebitat guy its not that I'm lazy or don't have the will to learn about my car, I would hope me coming here and asking questions would prove some willigness. I wanted a nice car so I went and bought one. No I am no expert in cars at all I basically no nothing about cars I'm sorry. And I have no clue if I have a cel because I don't know what one is. But I will find out and learn and check. Same with with me having boost leaks. As for the numbers my car ran I will have them short?y I'm just waiting to get out of work to go to the shop is all. But I did put a new oem cat in and a buch oxygen senor before cat in and no real change

 

[habitatguy187]

You can use the search feature and find everything you need to know about how to pass a smog inspection, you can even google it if you want.

 

[Mrdjc]

Is there a way to recirculate a bov that already vents to the atmosphere? And question how did you clean your throttle body and what's a tps. I did use that stuff you put into your gas tank to clean injectors and increase octane like two gas fulls ago.

Usttr when I say I did use the search but everyones situation is different, which is how I did find that people have said change the spark plugs and wires and I never even heard of seafoam before. Sorry if my newb question annoys you even in the newb section.

 

[Jiggalude]

Strange they don't tell you why you failed, so you can go and fix it. Here in PA they're pretty strict but they do tell you why. CEL's will fail, no cat will fail, no smog/emissions equip. will fail. But in PA it's just a visual inspection for older cars.

 

[habitatguy187]

Usttr when I say I did use the search but everyones situation is different, which is how I did find that people have said change the spark plugs and wires and I never even heard of seafoam before. Sorry if my newb question annoys you even in the newb section.

CEL stands for check engine light.

If you don't want to spend anymore money and want to pass first do this , clean and regapped your spark plugs if they need it, then drive your car until it's almost on empty, put about 10 gallons of straight e85 in it, let it idle for about 10 mins, drive it around about 100 miles, then go and pass your test.

Stay out of boost the entire time you have e85 in your car.


There will be people that will tell you not to run e85 but it won't hurt anything if you stay out of boost and it will work. There was a thread on this last fall sometime and I told the guy in the first post what to do but he listened to everyone else, spent like $300 on a new catalytic conv, new plugs and wires, new o2 sensor blah blah - basically spent about $500 and still couldn't pass. He finally ran straight e85 in it and passed.

 

[highlandgst]

ok one .. what kind of BOV do you have .. two TPS stand for throttle position sensor it makes the car idle higher or lower . Three boost leak testing is a good thing to do as well . To put it bluntly when your readings are high it can be a few things . You replaced the cat and O2 sensor so those are out .. the only thigns left are a boost leak , the BOV not recirculated or your car isn't burning all the fuel thats going to the engine which might be you need plugs and wires the throttle body being dirty will slow the opening of your throttle there for making it harder to get pick up and a CEL is check engine light . if its on insdie the car go to autozone and have it checked they will tell you what code is thrown then tell use the code they gave you or ask them to print the code details

 

[Achelea]

Is there a way to recirculate a bov that already vents to the atmosphere? And question how did you clean your throttle body and what's a tps. I did use that stuff you put into your gas tank to clean injectors and increase octane like two gas fulls ago.

1.) TLA you need to learn for these cars.
DSM = Diamond Star Motor
TPS = Throttle Position
CAS = Cam Angle Sensor
ECU = Engine Control Unit

2.) Octane booster is a waste of money. You're basically paying for a bottle of kerosene. Run 91 in your car and don't be cheap.

3.) Get a length of hose that fits on the BOV and run it to the intake tube. The intake tube should have an plug to connect to. If it doesn't, go to a junkyard and get a new intake tube.

Virtual Tour of the DSM Engine Bay - 1G Visual Index

4.) Take the throttle body off and clean it, or clean it with carb cleaner with it on the car.

5.) The other thing is, when you vent/don't Recirculate, your car runs pig rich when you let off the throttle. Venting lets metered air escape. Since your ECU has only seen the air going through the MAF, it adds fuel according to what has been measured coming in.

Kind of like Making a 100 cookies for a class of 100 kids. Some of the kids go missing, and suddenly you have more cookies than kids.

 

[Mrdjc]

Thank you yes I read that post right before I posted something about taking off the boost arm and opening wwastegate. And him messing with tioming and had his plugs on wrong. Ok I will try that but I still would like to fix this little problem not just mask it once a year

 

[habitatguy187]

Kind of like Making a 100 cookies for a class of 100 kids. Some of the kids go missing, and suddenly you have more cookies than kids.

That's perfect! Cookies=fuel while Kids=air. More fuel than air=run rich.


Also learn these websites - VFAQ Site - Visual Frequently Answered Questions

And this - The Essential Primer on the Diamond-Star Engine Control Units - Table of Contents - this one will teach you what most of the people in the newbie forum and more than half of the proven members still don't understand.

 

[LiquidX]

1.) TLA you need to learn for these cars.

What is "TLA"

Kind of like Making a 100 cookies for a class of 100 kids. Some of the kids go missing, and suddenly you have more cookies than kids.

Send me the extra cookies especially with the increased price of cookies
Send them right here --->

 

[jrohner]

Why would it idle like crap? I thought it was when you were actually venting the BOV that it caused an issue. I could be wrong though.

Many times the BOV is slightly open at idle because the vacuum sucks it open (as it's supposed to).

 

[Mrdjc]

thank you all! I had a cel about a month ago it said something about the cat guy told me to replace o2 see if that fixed it but I went ahead and did that and changed the cat, but he didn't say anything about the o2 behind the cat so I left that alone, reset the battery and the light hasn't gone on since. I have a bov that is like and hks one I will post pictures soon. It doesn't recirculate though anyway to recirculate without buying another one?

 

[Achelea]

thank you all! I had a cel about a month ago it said something about the cat guy told me to replace o2 see if that fixed it but I went ahead and did that and changed the cat, but he didn't say anything about the o2 behind the cat so I left that alone, reset the battery and the light hasn't gone on since. I have a bov that is like and hks one I will post pictures soon. It doesn't recirculate though anyway to recirculate without buying another one?

Personally I'd suggest switching to a 1g BOV, and then just attatching a hose to the intake hose before the turbo.
When we get pictures we can help you faster.

Your intake should have a place to connect a hose to it, like this.

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or

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Or is it closed off, like

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[LiquidX]

There are recirculationi kits available.
Assuming it's the Synapse BOV
SYNAPSE BLOW OFF VALVE ANTI-STALL VALVE KIT FOR MAF BOV: eBay Motors (item 250643300148 end time Jul-01-10 13:52:19 PDT)

So the tech didn't say wether it was supposed to be the front or rear o2?

 

[kimcheefists]

there is no smog test in texas, if I had to guess they didnt have to dyno it , they should just plug into the obdII plug. The shop that preformed the test should have given you a paper with the numbers on it and what numbers failed....please post that info, it will help alot to see what the problem is.

I don't know what the regulations are in Texas but I used to live in Illinois and the only thing they did for inspections was plugging in the OBD II scanner too. HOWEVER, that was only for 96+ cars. Cars manufactured in 1995 and below have a different OBD port. The plugs themselves are different between all car manufacturers and in different locations (sometimes under the hood). Therefore, the inspectors do the smog test with a dyno on cars 1995 and older. All you'll get is a sheet that tells you how much of each emission you're actually emitting from the exhaust.

 

[Mrdjc]

Theseare the numbers it ran.
Hc 220 I ran 823
Co% 1.20 I ran 11.56

 

[kimcheefists]

From the numbers you gave, it seems as though you're running rich. If I were you, I'd definitely recirculate that BOV as everyone has already mentioned.

 

[Mrdjc]

I don't know if I can get one soon enough for the inspectiion again whhat if I just put on my stock bov?

 

[BLINKY619]

Way to steal a quote of mine.
http://www.dsmtuners.com/forums/newbie-forum/372654-little-help-upgrade-path.html#post152226853

hahaha just tried to prove a point...!!

 

[Mrdjc]

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[LiquidX]

I'm surprised they didn't tell you to get a battery tie down.

You are running pig rich, check your plugs and wires to start and is your cat converter good? You need to update your profile to get more info.

 

[Achelea]

Sorry to say, Ditch that BOV for now. It's not doing you any good. Go to a junk yard and find a 1g, or even a stock 2g one and connect it to the opening just in front of it.

Until you get the proper equipment and software to support it, that BOV will only cause you head aches.

 

[92EagleAWD]

I'm surprised they didn't tell you to get a battery tie down.

You are running pig rich, check your plugs and wires to start and is your cat converter good? You need to update your profile to get more info.

Did you not see the awesome bungee cord he used as a tie-down? Also he said he replaced the CAT and O2 sensors, i know for a fact that my stock 1g BOV stays open at idle, because its supposed to like some mentioned before me, this makes it a Quick Release Type BOV, if you do the Dodge Mod to it it will no longer be Quick Release. But either way having that hose on will drop those numbers a lot.

 

[habitatguy187]

If the BOV is leaking at idle then all that means is it's sucking in un-metered air, which would actually lean the car out, not make it run rich. I still don't believe that the bov is his problem.

 

[KKneipper]

The BOV would only cause you to run rich when you let off the gas (if it's adjusted correctly). Even then, it's only for a split second, and shouldn't effect the results that much. I would check the spark plug gap (.031) and do a boost leak test for starters.

Just google "boost leak tester" and you can find websites with directions on building your own for around 5-10 bucks. And it's very easy.