loose egr valve [Archive] - Nissan Xterra Forum

loose egr valve

03-21-2007, 05:45 PM
ok heres my story about a week ago i started to notice a tapping sound coming from the engine so after closer inspection realized it was coming from the valve cover. So i figured it was a lifter that needed adjusting but after bringing it to the dealership on monday my egr valve was loose and after tightening it the noise went away. thank god it still under warranty so no cost. But when i talked to my pops he said i should replace my spark plugs, he said the plugs are probably fouled up exspecially the ones closest to the egr valve. so i was gonna change them this weekend but after so searching its sounds like that #6 is a real pain in the butt. so does everyone feel i should listen to dad and replace them i only have 15,000 miles on the xterra and if i do change them can i skip #6 its seems like most people say the shops skip it anyways. sorry so long let me know what everyone thinks thanks chris

03-21-2007, 08:00 PM
it is never good to just skip somthing!!!! how long did the taping go on?????? if not for long i would just let it be... when you do the plug change just take your time and change #6...

03-21-2007, 08:10 PM
about 2 weeks

03-21-2007, 08:54 PM
i would think it is alright if you want to make sure just sip some seafoam and clean them up.....

03-25-2007, 08:02 PM
where exactly is the EGR valve

03-25-2007, 08:35 PM
for those who dont know whqat a egr valve here is the link that i found that describes it..... hope it helps Click Me (http://http://autorepair.about.com/od/generalinfo/l/bldef165.htm)

03-25-2007, 09:22 PM
thank link goes no where

03-25-2007, 09:41 PM
ok here it is...... http://autorepair.about.com/od/generalinfo/l/bldef165.htm

03-25-2007, 10:39 PM
any know where exactly it is on the X ....

03-25-2007, 10:51 PM
i really dont know, but as the description describes it is on the intake manifold. so i will look at the service manual and try to find it......

03-25-2007, 10:58 PM
here it is....



i believe it is # 27 egr control valve

03-26-2007, 09:28 AM
Jason where did you get your electronic manuals, and how much did they cost?

03-26-2007, 03:19 PM

click that link to see what it looks like it will give you an idea what to look for, its on the back right hand side of the manifold. it actually looks like there is 2 of them.

03-26-2007, 06:22 PM
it just the service manual i got form ricer-x on cd-rom

10-16-2008, 06:32 AM
I have the same problem with my x and hopefully its the same problem.

10-16-2008, 09:07 AM
have you checked to see if its loose or not? i actually had to bring it in twice for the same problem. The second time they used some lock tight or something along that lines to make sure it doesnt loosen up again.

10-16-2008, 11:36 AM
I have been a little gun shy about taking to the dealer but now that I have some hope I am going to book it. I love the car because it fits my needs it doesn't owe me anything. I just wish it loved me back.

10-16-2008, 11:37 AM
and I should add that I am not sure what to look for.

10-16-2008, 02:34 PM
scroll up and click on the link i added and you can see what it looks like than look on the back right hand side of the manifold you cant miss it once you know what it looks like

10-16-2008, 03:08 PM
No offense to your dad lol.

But I dont see why the plugs should be changed. It would only be allowing more air in the manifold. It might have run lean but if it had been a problem then it would have thrown a code ad your MIL would have come on. The egr valve's only function is to collect oxides of nitrogen (NOx) in the exhaust and recirculate it back into the intake and through the engine to be burned rather than be release into the atmosphere, but NOx is actually a really low emission on the VG33 engine. I did an exhaust gas analyzation on mine at school and it was incrediablly low accoring to the emissions teacher. I wouldnt worry to much about it.

Alsio about replacing the plugs closest to the EGR and how they are porbably the most important to replace. That doesnt make much sense to me either. The intake manifold would seperate the everything coming from the EGR vavle pretty evenly so you wouldnt have to worry about specific spark plugs.

heres a pic of where it's located btw: