That looks really complex. I had a '92 Accord and I once took the EGR valve off just to clean it out as a recommendation from a mechanic. I removed the valve and just sprayed carb/choke cleaner into it and into the passageways associated with it. You might try that first. I know I wouldn't want to be drilling anywhere near my engine.

 

The drilling just removes some brass plugs and brass is soft so it's not too bad. I'm just trying to save some time/money. Maybe I'll get some carb cleaner or seafoam and pour it in there via the EGR valve and let it sit overnight then take it on the highway and rev the engine. Although all that gunk might just loosen up and get into the EGR valve itself.

 

Ah found one for our F22 in the Odyssey.
http://home.comcast.net/~em-engineering/T2T013.pdf

The 1st part of the pdf is for the previous gen F22's. The second part is for our generation of F22's. It doesn't seem like drilling is required.:stupid:

 

Good find

That is a good find. I see your point on the drilling surfaces being soft etc. Anyway, good thing it is not required. I might just do this sometime as a preventative maintenance.

 

I plan on doing it before my emissions check. I'm going to try leaving the fuel rail in and work around it. It'll be tough. What's really in the way is the injectors. They seem right on top of the EGR cover on first observation last night with my flashlight. If the fuel rail is removed or the injectors, new o-rings are required. Something I don't want to pay for.

 

CEL EGR flow restricted-$0 fix

This forum just saved me hundreds of $ and tons of aggravation again.
I have a great local mechanic who read my CEL code for free (I don't have the reader). He is one of these honest, old-school understanding guys who doesn't look at you cockeyed because you maintain your car yourself. He shows me the readout, "EGR flow restricted" (I think the # was 409).
I vaguely remembered something I read here once about clogged EGR ports. Searched and found this thread. I removed the EGR port cover (Remember to release fuel system pressure before removing fuel rail! :stupid: ) and whaddya know - all the little passageways inside the cover were blocked up tight, and the feeder port (don't know if that's what you call it - the one closest to the EGR valve) and all 4 EGR ports were completely plugged too.

Cleaned everything, reset CEL and looks like it's licked!
Total investment: a few cents worth of rags and carb cleaner, and about 1 hour.

This site is helping me through the lean times, for sure! :cheers:

 

If you flip the EGR cover over you'll see channels. You just need a small sharp flat head screwdriver to scrape out the carbon. I'm glad your problem is fixed.

 

Incidentally, I removed and replaced the fuel rail without replacing the o-rings on the injectors. They were pliable and showed no rot, seated back in nice and tight. Hopefully this will not result in a horrible flaming death for me and my family