Disconnecting EGR... OK to drive 300miles/race with? - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

gotta240 · 05-10-2007, 07:33 PM

I have a stumbling(feels like running out of gas) problem at freeway speeds and when coming to a stop. I've replaced EVERYTHING possibly related to this problem, without fixing it!!!

Only thing left to try is a clogged EGR. Is it ok to disconnect the vaccume to the egr, drive 300 miles, and a full race/track day with the egr disconnected???

Suggestions on cleaning clogged ports?

4thHorse · 05-10-2007, 07:39 PM

What do you mean by replaced everything, what is everything

projectRDM · 05-10-2007, 07:54 PM

An unplugged EGR won't hurt anything.

As far as cleaning it, the best way is to remove the valve and the BPT valve and soak both in carb cleaner overnight. Blow out all related vacuum hoses and replace as required.

gotta240 · 05-10-2007, 11:50 PM

Thanks for the reply R240na... Seems like you always come through on technical questions.

Is there a way to do it without removing the manifold?

Also, my shop teacher said that my car may PING with the EGR disconnected. Is there any possibility of pinging(which i wouldn't be able to hear because my car is kinda loud and i don't have great hearing)

projectRDM · 05-11-2007, 12:46 AM

On the exhaust side you can plug with an AIV delete from the dealer, or any M24x1.25 (IIRC) plug. Intake side, buy the blockoff plate found on Ebay, or cap the pipe off once it's removed from the valve.

The 'pinging' he's suggesting may be possible in theory, but he's also probably used to older cars with preheaters that ran ragged lean anyway and would detonate once that added recirculation was removed.

gotta240 · 05-11-2007, 01:01 AM

Sorry for my horrible descriptions, but here it goes.

On the rear, left of the motor there are two brass-like, flying saucer looking things. There is vaccume line going between the two. My shop teacher told me to disconnect the vaccume line between the two, and put a screw in the vaccume hose.

Will that work for saturdays race day? (200 miles each way plus a couple hours on the track)

myriad · 05-11-2007, 07:40 AM

My EGR is in a box somewhere in the garage and my car words fine *knock on wood* You should be fine without it in there.

**Phlip** · 05-11-2007, 07:56 AM

Quote:

Originally Posted by gotta240

Sorry for my horrible descriptions, but here it goes.

On the rear, left of the motor there are two brass-like, flying saucer looking things. There is vaccume line going between the two. My shop teacher told me to disconnect the vaccume line between the two, and put a screw in the vaccume hose.

Will that work for saturdays race day? (200 miles each way plus a couple hours on the track)

He instructed the removal of mine, and I just got home from a road trip, 350+ miles each way with some bouts of well over 100MPH for extended periods, you'll be fine

gotta240 · 05-11-2007, 08:06 AM

Thanks a lot guys. Sorry for needing things spelled out, but you're saying that hose i disconnected and blocked off is an "ok" way to bypass it? I now understand completly that i'll be fine without an egr, but just making sure that what i did will indeed bypass it.

Again, thank you. This is bringing some peace of mind as i leave in 18hrs and counting!!!

05-10-2007, 07:33 PM	#1
gotta240 Post Whore! Join Date: Dec 2005 Location: so cal Posts: 3,496 Trader Rating: (21) Feedback Score: 21 reviews	Disconnecting EGR... OK to drive 300miles/race with? I have a stumbling(feels like running out of gas) problem at freeway speeds and when coming to a stop. I've replaced EVERYTHING possibly related to this problem, without fixing it!!! Only thing left to try is a clogged EGR. Is it ok to disconnect the vaccume to the egr, drive 300 miles, and a full race/track day with the egr disconnected??? Suggestions on cleaning clogged ports?

05-11-2007, 12:46 AM	#5
projectRDM Post Whore! Join Date: Dec 2002 Location: Atlanta Age: 51 Posts: 13,812 Trader Rating: (12) Feedback Score: 12 reviews	On the exhaust side you can plug with an AIV delete from the dealer, or any M24x1.25 (IIRC) plug. Intake side, buy the blockoff plate found on Ebay, or cap the pipe off once it's removed from the valve. The 'pinging' he's suggesting may be possible in theory, but he's also probably used to older cars with preheaters that ran ragged lean anyway and would detonate once that added recirculation was removed. __________________ FORMERLY R240NA Learn what's really going on and protect your assets now before they're gone forever: www.paypalsucks.com

05-11-2007, 07:40 AM	#7
myriad Leaky Injector Join Date: Mar 2007 Location: Indy Posts: 120 Trader Rating: (0) Feedback Score: 0 reviews	My EGR is in a box somewhere in the garage and my car words fine knock on wood You should be fine without it in there. __________________ Woot. : S14 :

05-10-2007, 07:39 PM	#2
4thHorse Zilvia Member Join Date: Mar 2006 Location: San Jose, CA Posts: 295 Trader Rating: (0) Feedback Score: 0 reviews	What do you mean by replaced everything, what is everything

05-10-2007, 07:54 PM	#3
projectRDM Post Whore! Join Date: Dec 2002 Location: Atlanta Age: 51 Posts: 13,812 Trader Rating: (12) Feedback Score: 12 reviews	An unplugged EGR won't hurt anything. As far as cleaning it, the best way is to remove the valve and the BPT valve and soak both in carb cleaner overnight. Blow out all related vacuum hoses and replace as required.

05-10-2007, 11:50 PM	#4
gotta240 Post Whore! Join Date: Dec 2005 Location: so cal Posts: 3,496 Trader Rating: (21) Feedback Score: 21 reviews	Thanks for the reply R240na... Seems like you always come through on technical questions. Is there a way to do it without removing the manifold? Also, my shop teacher said that my car may PING with the EGR disconnected. Is there any possibility of pinging(which i wouldn't be able to hear because my car is kinda loud and i don't have great hearing)

05-11-2007, 01:01 AM	#6
gotta240 Post Whore! Join Date: Dec 2005 Location: so cal Posts: 3,496 Trader Rating: (21) Feedback Score: 21 reviews	Sorry for my horrible descriptions, but here it goes. On the rear, left of the motor there are two brass-like, flying saucer looking things. There is vaccume line going between the two. My shop teacher told me to disconnect the vaccume line between the two, and put a screw in the vaccume hose. Will that work for saturdays race day? (200 miles each way plus a couple hours on the track)

05-11-2007, 08:06 AM	#9
gotta240 Post Whore! Join Date: Dec 2005 Location: so cal Posts: 3,496 Trader Rating: (21) Feedback Score: 21 reviews	Thanks a lot guys. Sorry for needing things spelled out, but you're saying that hose i disconnected and blocked off is an "ok" way to bypass it? I now understand completly that i'll be fine without an egr, but just making sure that what i did will indeed bypass it. Again, thank you. This is bringing some peace of mind as i leave in 18hrs and counting!!!