it's free

http://www.adobe.com/products/acrobat/readstep2.html

 

It looks to me that the previous owner has either left it off by mistake or taken it off on purpose,if its blocked off at the end its most likely been done on purpose,(perhaps the Egr was faulty,Ive done this to mine.
As long as its blocked off it should run fine & you wont get so much carbon inside the Throttle bodie.

 

Maddog, Does the EGR valve route some exhuast back into the throttle bodie? If so, what's the reason? To insure that what unburnt fuel it collects is used for better emissions?

Erich

 

The egr valve puts exhaust gasses back into the intake. The PCV valve puts it's gasses back into the air flow before the TB. At least that's how it is on my 3.slow.

 

Thats good to know I've had to clean my TB thanks to my PCV, but I never knew of the EGR. I think I'll poke around some and try to find the EGR cooler.

Erich

 

with out getting to scientific,thats about it.But its not fuel, its like a carbon fume, but its(egr) only surposed to do it when the engine is warm & above a certain rev.
When the egr is a little dodgy it doesnt close & the engine chokes a bit on this carbon air,causing a rough idle sometimes.
Put it this way if you are a smoker ,how would you like the smoke you blow out to be feed back though you by some tube in your neck.

 

the EGR is used when cruising on the highway or any light throttle, light load conditions, because the engine usually runs lean at those times, NOX is produced, its a emission, the egr lets exhaust gases into the intake to help cool off the combustion chamber to reduce NOX emissions, the exhaust gasses contain very little oxygen so it does not burn, thus lowering combustion temps

 

That makes sence.

Hey Superjoe, I'm always stoked to see guys from Oregon! Oregon City has some sweet fishing

Erich

 

well, I'm not much of a fisherman, but there is a lot of fishing on the Columbia and Willamette, just make sure your upstream on the Willamette because the closer you get to Portland the more likely that your going to catch a turd, literally

 

LMAO, you aint kidding They say the BILLION dollar project to drill tunnels under the city to hold all the extra sewer/rain water mix is still ten years from completion. The steele and salmon fishing is supposed to rock at certain times at the confluence of the Clackamas with the Willamette.

Just a little off topic... It's all about cleaner emissions though right EGR... less NOx, Tunnels... Less brown trout

Erich

 

a properly working EGR valve will also get you better mileage since you're not dumping as much air/fuel mix into the combustion chamber. it's more important to have on a 22RE than it is on a 22R because the 22RE tends to run leaner, and a leaner mixture runs hotter. the EGR helps cool this down and prevent detonation

as for mine, it's blocked off, and i'm blocking off the EGR setup on my new engine that's going in. why? i don't have the complete emissions setup, we don't have testing here, and the whole setup seems needlessly complicated. if there was 1 hose from the carb to the EGR valve, i'd run it in a heartbeat, but noooo...

 

Ill hook it up and see what happens. Ill keep you guys posted.

 

I just noticed this today also, anyone have an idea what the nipple connects too? It has suction to it so its meant for something. Is that the coolant temp sensor?

 

bump, come on someone has to know this one!

 

By the way, thanks again for the turn signals! I'll start looking for them next week then.

These pics should help you.

 

And this pic...

 

The vacuum line that is plugged on yours and mine is used for trucks with cruise control, as shown below. One side of the "T" goes to a grommet in the passenger firewall.

 

And the other side of the "T" goes here