Nearly Stock KA didn't pass smog...ideas? - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

DogFather · 11-12-2004, 09:44 PM

All i did to pass mine was bypass the hoses on my EGR valve and it worked like a charm. Just make sure the smog people would not see that bypass.

ghostuss · 11-12-2004, 09:54 PM

if my engine is throwing a EGR code. can I just plug up the EGR pipe and reset the ECU to pass smog?

idlafie · 11-13-2004, 04:50 AM

Quote:

Originally Posted by ghostuss

if my engine is throwing a EGR code. can I just plug up the EGR pipe and reset the ECU to pass smog?

Check the vacuum line running from the secondary BPT Valve to the EGR. That rubber vacuum line has a tendency to crack / melt / split / break. When that happens you lose vacuum to the EGR system causing the ECU to kick a code.
You could also have carbon buildup in the EGR valve itself. Easiest way to clean it is to spray car cleaner into the top tube of the EGR valve & move the underneath diaphram portion of the valve up & down with your fingertips as you spray carb cleaner into the top tube of the EGR valve. This helps to remove any carbon buildup you have in the EGR valve.

If after doing all this, and your ECU still kicks a EGR code, then go back and check all the vacuum lines running to the intake & carbon cannister for a line that may be disconnected, cracked/split/melted or just clogged.

Anyhow, hope this helps..good luck!!

ID
'95 SE

11-12-2004, 09:54 PM	#2
ghostuss Zilvia FREAK! Join Date: Jan 2004 Location: San Diego/San Francisco Age: 39 Posts: 1,337 Trader Rating: (0) Feedback Score: 0 reviews	if my engine is throwing a EGR code. can I just plug up the EGR pipe and reset the ECU to pass smog? __________________ 96 all suspension s14 SOLD 90 s13 coupe - SOLD Currently rocking 2002 BMW M3 w/ custom suspension. ButtonWillow, CA entire circuit drift/grip event by shock drifting spot for sale. Take over my spot for $150 only.

11-12-2004, 09:44 PM	#1
DogFather Join Date: Jul 2004 Location: So Cali Posts: 21 Trader Rating: (0) Feedback Score: 0 reviews	All i did to pass mine was bypass the hoses on my EGR valve and it worked like a charm. Just make sure the smog people would not see that bypass.