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Old 19 Jan 2010, 12:34 am
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Join Date: Jan 2010
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Default Cleaning EGR Runners on 1996 Honda Accord ( to pass smog test)

Hey Honda Friends,

Recently my girlfriend's 1994 Honda vtec Accord EX didn't not pass smog (NOx was too high). Did the tune up, oil change, checked timing.. blah blah blah. Most older hondas have a hard time passing smog, as I have ran into this problem before, I decided to clean out her EGR runners. I didn't see anyone post pictures for this so.. here it is, hopefully it will help a fellow member : )

1) The 1994-1997 Accords do not have the EGR Runner Plugs like the 1990-1993's, so, DO NOT DRILL ANYTHING. You DO NOT need Part Number 17199-PT3-AHM. You will only need:
- some "Thottle Plate and Induction Cleaner".
- Bungie Cord
- A socket set
- Coat Hanger
I used the Honda Thottle cleaner:

2) Get these lines out of the way by pulling them out

3) Unplug this here black thingy.. there is also a bolt under that, so unbolt it. In addition, unplug any black hoses that might be in the way, There are a few more that are not in the picture

4) Next take off that long black that is attaching the injectors. This is a picture of AFTER taking it off, but it gives you a better idea where the bolts are.
Also in the pictures are the 4 bolts you need to remove the plate to get to the blocked EGR Ports.

5) Use the bungie cords to give you some room to work with...

6) This is much easier than the 1990-1993 accords where you have drill and buy EGR Port Plugs. After taking off the plate, these are the ports you need to clean out (pictured are clean already). Spray that spray I mentioned earlier and let it soak for a bit. Next, use that coat hanger and start pulling that stuf out. 2 of her ports were completely filled with carbon. My girlfriend's 1994 accord had 130k on it. I recommend using the twisty side of the hanger (looks like picture below) because it not only pokes through, but when you pull up, it yanks the carbon out. On the plate, there are 2 pieces, be sure to spray plenty of cleaner and clean it. Be careful, there might be a gasket there so dont' scrub too hard with the coat hanger.

7) When you are spraying the cleaner onto the EGR holes, be sure you are spraying directly in there to get all the carbon out. Bend the red straw like so to get maximum effect. After cleaning it with the coat hanger, if you have an air hose, plummet that port with some air to get more carbon out.

8) Put everything back when you are done. I had a hard time aligning the 4 orange things (injectors). When I put in one side, the opposite side pops back out. The important thing here is to seat them CORRECTLY and not bend inward the O parts. You do not want any leaks of fuel.

9) Move your car onto the street, if you are working on it in a garage. I can't stress this enough. CARBON MONOXIDE poisoning is deadly, DO NOT start or run your car in a garage after this procedure. When your car gets onto an outdoor area, gun it for a minute or so to get ride of all that waste in the system. Expect a lot of black or grey stuff to come out. Picture below is about 30 seconds of gunning it and there are still some black stuff coming out.

10) Next, go under the hood. Spray either some of the cleaner or a leak detector spray. Check for leaks around the Fuel Injectors. Look for fuel leaking through. If you followed step 8 correctly, then there should not be any leaks!

Hope you enjoyed reading this as much as I enjoyed writing this. Please post anything that might help other Accord owners... or in my case, other guys that have girlfriends with Accords that are obligated to help them pass smog tests in California.
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Old 24 May 2013, 06:11 pm
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Default Re: Cleaning EGR Runners on 1996 Honda Accord ( to pass smog test)

What happened to the images? I don't see your photos.
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