Seafoam and SMOG

[Blev]

I tried to search but the stupid banner is in the way and I can't do select anything.

I just failed smog, barely, and need some tips on getting her to pass. I heard that seafoam may help, what is it, how do I use it and where can I get it? I changed my plugs about 2 or 3 months ago, changed my air filter with the stock airbox and inlet pipe. My oil isn't due for changing for another 1k miles, but I guess if it will help, I'll change it. Any and all advice will be appreciated.

Thanks

 

[40th GT]

Clean out your throttle body real good with air intake cleaner or TB cleaner. Seafoam can be bought through a parts store and the instructions on the can tell you everything you need to know.

New o2 sensor might help things out.

 

[01TrueBlueCobra]

run a can of seafoam in your gas tank and another can through the PCV valve. Also try changing the fuel filter, and oil

 

[sgarlic]

I would definately clean the TB .. but I don't think changing the oil will effect anything.

Seafoam may or may not do much for you relating to emmissions. It'll clean out your fuel system and PCV system for sure if you put it in, but expect tons of smoke for the first hour or so after you put it in.

 

[Mel96GT]

Is your X-pipe catted? If not, good luck passing smog.

 

[Kilgore Trout]

The throttle body has a special coating on it that prevents dirt build up. If you "clean" it you will remove this coating. It is strongly recommended not to "clean' your throttle body for this reason

 

[Blev]

The TB and plenum are only about a year old, so I doubt that's the issue. The X-pipe is catted, so I guess I'm just screwed. I was hoping there was a trick or two that I could do that would help me pass smog. My numbers are not that off, so small things might just do the trick. My entire intake and exhuast set-up is all fairly new so I don't understand. My last Dyno, my A/F was good but I did change out my BBK CAI back to the stocker WITHOUT disconectting my battery. Don't think that would do much though. Any other advice/tips?

 

[Kilgore Trout]

I think you should use SeaFoam on it in all three ways. The can has instructions, you can Google for them, or you can use this website's search feature...

 

[mr. jones1]

do the seafoam in your gas tank and another can through the PCV valve. as others have said.
you can get it at NAPA. these engine do get a lot of carbon on the pistons, valves and manifold. seafoam will clean it. That carbon is like a sponge. It sucks up fuel and has a big effect on emissions.
change the oil when you done. give it a few spirited drives after the seafoam.
then go to inspection.

 

[01TrueBlueCobra]

Why don't you put on your stock midpipe for the test.

 

[Gearbanger 101]

I was hoping there was a trick or two that I could do that would help me pass smog. My numbers are not that off, so small things might just do the trick.

The biggest killer.....Increased octane = increased emission levels. Run regular gas along with 1-2 bottles of Isopropyl Alcohol (rubbing alcohol) per 1/4 tank for emissions testing. I see you’ve done a tune up, which is good. If you're able to, set your hard idle to about 950rpm and If you're running a 160-180 T-stat, switch it out for the stock 192. Hotter engine coolant is better.

These tips should be more than enough to bring you back over the edge.

 

[Torinalth]

a friend of mine was really shady with his method, he loosened the flanges between his midpipe and the catback letting just a bit of air to escape. brought him back into the green. though they will most definatly frown on this if you get caught.

Torinalth

 

[sgarlic]

The throttle body has a special coating on it that prevents dirt build up. If you "clean" it you will remove this coating. It is strongly recommended not to "clean' your throttle body for this reason

That's why you use throttle body cleaner, not carb cleaner. Throttle body cleaner doesn't have the abrasiveness in it that removes the coating.

 

[Blev]

I thought about the higher octane, but my car pings with with anything other then 91. I guess I'll put just enough to go and take the test. I also hear about the alcohol in the tank. I'll try that as long as it won't hurt anything. It won't hurt anything right?

 

[Kilgore Trout]

That's why you use throttle body cleaner, not carb cleaner. Throttle body cleaner doesn't have the abrasiveness in it that removes the coating.

Oh ok, thanks for correcting me on that one. I did not know that

 

[Gearbanger 101]

I'll try that as long as it won't hurt anything. It won't hurt anything right?

Nope......what do you think gas line antifreeze is? Thousands of winter burdened Canadians can't be wrong.

 

[Blev]

Nope......what do you think gas line antifreeze is? Thousands of winter burdened Canadians can't be wrong.

Thanks bro, you da man