too lazy to take a pict right now, but I'm sure someone has seen this...p/n 11823-64u60 came with a wire 'bottle' brush in the middle of it. is this to keep debris out of the intake, or for cleaning out egr tubes & such [which are in a different area i might add]. in other owrds, is it supposed to be installed in there? I didn't take the old one out yet to see if there is one in there too....

Not sure what it's for exactly, but you should find one in the hose you remove.

That little brush is there to prevend oil blow by. Put it back.

To condense PCV hot vapors on brush so they don't enter plenum and condense there. Why you change these hoses with brush regularly.

Obviously as these engines pass 60k, 120k, 180k, 240k........the blowby increase thus more frequent maintenance required.

Since they were "all done" by Japanese Standards at 60k........the manual never considered what to do with high mileage engines.

Whu you end up cleaning plenum inside every 6 months!

thanks guys....a place for everythingand everything in its place

Wow... we found one in a PCV hose in Lee's Q (Natsoundup) when I was pulling the plenum and thought it was left in there by someone! I never noticed it during my plenum jobs in the past...

Heath

Pff, screw that, I just shoved a pipe cleaner in mine. I wasn't paying money for that stupid crap. . Note, a pipe cleaner is MUCH thicker, more brissels, then the OEM one

I just did a plenum job and didn't notice that in any of my hoses. Which one is it?

It's the one on the front top of the Throttle Body. The pipe comes up from under the plenum, and goes into a tube in the elbow infront of the TB.

RobertsnewQ wrote:I just did a plenum job and didn't notice that in any of my hoses. Which one is it?

so you just 'casually' mention the underplenum job in passing??damn, dude--let's see some pics! how did it go?

I had that in one of my intake hoses in my Z I would put it back as well I agree with the oil blow back responce earlier.

Negrodamus"Negrodamus, why does President Bush believe there are wepons of mass destruction in Iraq?" Answer... "Cause he has the reciept!"

Negrodamus wrote:Negrodamus"Negrodamus, why does President Bush believe there are wepons of mass destruction in Iraq?" Answer... "Cause he has the reciept!"

GQ Jay wrote:so you just 'casually' mention the underplenum job in passing??damn, dude--let's see some pics! how did it go?

Actually I didn't take any pics - I just wanted to get it over with once I started. Took me about 1.5 hours to get it apart, and about an hour to swap over new hoses and stand around going "damn..." with a beer in my hand. Actually was a little faster getting it together again. I didn't notice exactly how long because I stopped to cook some burgers on the grill.

There were three irritating things. The first was that a lot of the sensor connectors have degraded with heat and the plastic tabs broke off several. THey still lock together but are a ***** to get apart.

The second was that the Scottsdale Infiniti hose kit is not as complete as I assumed. It was missing one hose right behind the IAC which will be a real pain to do later, another one under the TB and another opposite the one with the caterpillar in it. They are all for the IAC system, so maybe it's my fault for not specifying them.

The third was that NAPA didn't have a thermostat and there was no infiniti dealer in Temecula so I couldn't do that while I was nearby. It's not a big deal but irritating nonetheless. I suspect my thermostat is stuck open because the car takes forever to warm up, so I will be doing it very soon.

Oh, and to top it off, the vacumn leaks I was hearing weren't from any of the hoses in the kit anyway. One was from the line to the fuel pressure regulator under the IAC, and one was the IAC to plenum gasket. I guess now that I have all new hoses, and all new injectors, the KS will fail and I'll have to do it again.