Failed DEQ again

[Gary Lewis]

Where does the other end of the aluminum tube go? Any idea what the rubber line is supposed to attach too?

You can see the other tube on page Fuel Systems/Air Cleaners/Air Cleaner Illustrations. Full stop shopping.

[kristopherdb]

You can see the other tube on page Fuel Systems/Air Cleaners/Air Cleaner Illustrations. Full stop shopping.

9652 found it and see where it goes. How important is the one that goes back to the cat? I’m not sure there is a place for a sensor as I just had it put on last week. 

 

 

 

 

 

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From: Gary Lewis [via Bullnose Enthusiasts] <redacted_email_address>

Sent: Wednesday, September 13, 2017 6:34:41 PM

To: kristopherdb

Subject: Re: Failed DEQ again

 

 

You can see the other tube on page Fuel Systems/Air Cleaners/Air Cleaner Illustrations.  Full stop shopping.  http://n8.nabble.com/images/smiley/smiley_wink.gifDad's: '81 F150 Ranger XLT 4x4: Down for restomod: Full-roller "stroked 351M" w/Trick Flow heads, Weiand intake, Street Demon 750/ZF5/3.50 gears w/Kevlar clutches

Blue: 2015 F150 Platinum 4x4 SuperCrew wearing Blue Jeans & sporting a 3.5L EB & Max Tow

Big Blue: 1985 F250HD 4x4: 460/T19/3.55's

 

 

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[Gary Lewis]

I don't know what you mean by "the one that goes back to the cat". But, if you mean the hose from the AIR pump to the cat, it is crucial. Absolutely critical. The cat cannot burn the excess fuel w/o oxygen, and the pump and the hose give it the oxygen. No oxygen and the cat won't work and you won't pass emissions.

The hose from the exhaust manifold to the air cleaner isn't going to make any difference in today's weather on the emissions test. It will make a difference in how the truck runs under conditions when it is cool out and there's moisture in the air as the carb may ice up. And, it helps keep the inlet air temp to the carb relatively stable, which is good for air/fuel ratio stability. Go read the page Fuel Systems/Air Cleaners. But not having that tube probably won't cause you to fail the actual emissions test.

[kristopherdb]

I don't know what you mean by "the one that goes back to the cat". But, if you mean the hose from the AIR pump to the cat, it is crucial. Absolutely critical. The cat cannot burn the excess fuel w/o oxygen, and the pump and the hose give it the oxygen. No oxygen and the cat won't work and you won't pass emissions.The hose from the exhaust manifold to the air cleaner isn't going to make any difference in today's weather on the emissions test. It will make a difference in how the truck runs under conditions when it is cool out and there's moisture in the air as the carb may ice up. And, it helps keep the inlet air temp to the carb relatively stable, which is good for air/fuel ratio stability. Go read the page Fuel Systems/Air Cleaners. But not having that tube probably won't cause you to fail the actual emissions test.

I meant the air pump. But would have probably asked about the second soon enough. Thanks again for this forum!

 

 

 

_____________________________

From: Gary Lewis [via Bullnose Enthusiasts] <redacted_email_address>

Sent: Wednesday, September 13, 2017 7:13 PM

Subject: Re: Failed DEQ again

To: kristopherdb <redacted_email_address>

 

 

I don't know what you mean by "the one that goes back to the cat".  But, if you mean the hose from the AIR pump to the cat, it is crucial.  Absolutely critical.  The cat cannot burn the excess fuel w/o oxygen, and the pump and the hose give it the oxygen.  No oxygen and the cat won't work and you won't pass emissions.

 

The hose from the exhaust manifold to the air cleaner isn't going to make any difference in today's weather on the emissions test.  It will make a difference in how the truck runs under conditions when it is cool out and there's moisture in the air as the carb may ice up.  And, it helps keep the inlet air temp to the carb relatively stable, which is good for air/fuel ratio stability.  Go read the page Fuel Systems/Air Cleaners.  But not having that tube probably won't cause you to fail the actual emissions test.Dad's: '81 F150 Ranger XLT 4x4: Down for restomod: Full-roller "stroked 351M" w/Trick Flow heads, Weiand intake, Street Demon 750/ZF5/3.50 gears w/Kevlar clutches

Blue: 2015 F150 Platinum 4x4 SuperCrew wearing Blue Jeans & sporting a 3.5L EB & Max Tow

Big Blue: 1985 F250HD 4x4: 460/T19/3.55's

 

 

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[PetesPonies]

The cat creates a second place for burning to take place, or at least a chemical reaction comparable to burning. . . . burning that didn't happen in the cylinder. If all fuel burned in the cylinder, there would be no emissions. Sound simple doesn't it:) The material in the cat, along with the air being pumped in, created the reaction to cleanup the exhaust. Interesting that as FI improved . .this extra air needed in the cat was nullified.

[Gary Lewis]

Actually, thanks to you for being here. We are trying to develop, as the headline says, THE WORLD'S BEST DOCUMENTATION WEBSITE AND DISCUSSION COMMUNITY FOR 1980-1986 FORD TRUCKS. We have quite a bit of documentation, and more is being added frequently, so there's probably no where on the web that has as much as we do.

But we need users. People who need help with their trucks and get it. That draws others in when they see the results. So, thanks for being here.

[kristopherdb]

The cat creates a second place for burning to take place, or at least a chemical reaction comparable to burning. . . . burning that didn't happen in the cylinder. If all fuel burned in the cylinder, there would be no emissions. Sound simple doesn't it:) The material in the cat, along with the air being pumped in, created the reaction to cleanup the exhaust. Interesting that as FI improved . .this extra air needed in the cat was nullified.

Ok just be make sure I understand clearly. I must get the left most circled and unconnected hose tied into the cat, by the muffler shop. I’m not even sure the cat I just had them install last week had a bung or not. But if I want to pass emissions I need to do it? 

 

 

 

 

_____________________________

From: PetesPonies [via Bullnose Enthusiasts] <redacted_email_address>

Sent: Wednesday, September 13, 2017 7:51 PM

Subject: Re: Failed DEQ again

To: kristopherdb <redacted_email_address>

 

 

The cat creates a second place for burning to take place, or at least a chemical reaction comparable to burning. . . .  burning that didn't happen in the cylinder. If all fuel burned in the cylinder, there would be no emissions. Sound simple doesn't it:) The material in the cat, along with the air being pumped in, created the reaction to cleanup the exhaust. Interesting that as FI improved . .this extra air needed in the cat was nullified.

 

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[ArdWrknTrk]

Newer catalytic converters have more complex catalysts than early ones but that does mean they have to operate in a very narrow range of fuel ratios, and a carburetor is going to be near impossible to meet that.

The air can be plumbed in near the entrance of the cat. It doesn't have to go directly into the case.

 

[JimsRebel]

Does your current exhaust system look like this? Do you see the pile inlet where the air pump connects? The air pump needs to be blowing air into the pipe all the time.

http://www.walkerexhaust.com/ PART NUMBER: 15741

http://www.walkerexhaust.com/catalog/epa-converters/e-catalog-lookup/15741

partImageDisplay.do

 

[kristopherdb]

Does your current exhaust system look like this? Do you see the pile inlet where the air pump connects? The air pump needs to be blowing air into the pipe all the time.http://www.walkerexhaust.com/ PART NUMBER: 15741http://www.walkerexhaust.com/catalog/epa-converters/e-catalog-lookup/15741

This is the item I purchased and had the muffler shop install.https://www.amazon.com/gp/product/B0085UDUJK/ref=oh_aui_search_detailpage?ie=UTF8&psc=1

 

 

 

_____________________________

From: JimsRebel [via Bullnose Enthusiasts] <redacted_email_address>

Sent: Thursday, September 14, 2017 8:13 AM

Subject: Re: Failed DEQ again

To: kristopherdb <redacted_email_address>

 

 

Does your current exhaust system look like this? Do you see the pile inlet where the air pump connects? The air pump needs to be blowing air into the pipe all the time.

http://www.walkerexhaust.com/  PART NUMBER: 15741

http://www.walkerexhaust.com/catalog/epa-converters/e-catalog-lookup/15741

 

http://bullnose-enthusiasts.12971.n8.nabble.com/file/n1666/partImageDisplay.do

1986 F150 XLT Lariat 4x4 300 C6, 9 inch 3:50, 235-15 tires, sway bars and skid plates, DS2 dist with GM 4 pin IGN module and no computer. still using the feedback carb; 3G ALT swap, PMGR starter; 150,000 miles, 2nd owner

 

 

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NAML