[Trainman]

98silverpathy, on Jan 9 2007, 03:11 PM, said:

***EDIT***
Trainman, approx what did your pre-issue maintainence cost you? It sounds like extra cheap insurance!

Can anyone give a further clue as to what has to be removed to get to these screws? The less you remove from the motor the better chance of future issues...I may be speaking from experience! Lol!!

2.7 hours, no parts req. So depending on your shop rate that would set the price. For me it was $210 CDN @$78/hr. Very cheap insurance indeed.

The screws are in the upper manifold, just a lot of bits and pieces to take off/put back on.

[navygz19]

Upper Intake manifold, and all associated components for it's removal. If it's anything like my Sentra, pop it open and VIOLA, there's the valves, all 6 of 'em.

This post has been edited by navygz19: 09 January 2007 - 01:19 PM

[Trainman]

navygz19, on Jan 9 2007, 08:58 PM, said:

Upper Intake manifold, and all associated components for it's removal. If it's anything like my Sebtra, pop it open and VIOLA, there's the valves, all 6 of 'em.

Yep, apparently real easy once opened up, its getting it opened up :o

[navygz19]

The Sentra had 2 screws per valve, I'm assuming the VQ's the same?

This post has been edited by navygz19: 09 January 2007 - 01:19 PM

[Trainman]

navygz19, on Jan 9 2007, 09:19 PM, said:

The Sentra had 2 screws per valve, I'm assuming the VQ's the same?

Yes, that is what I was told (I did not see them). So total of 12 screws.

[Daddy Rim]

Are there any symptoms that the valves may be coming loose or operating improperly? Forgive me as I'm not familiar with the operation/purpose of these valves.

The reason I ask is that upon startup, or approx 15-20 seconds after I start my 01 Pathy, it begins to sputter, sounding somewhat like a misfire condition. This lasts for approximately 15-30 seconds, then the engine comes back to normal and the engine has all the power it normally has.

I have pulled the code for the MAF sensor and a new one will be on it's way very soon, but I'm somewhat doubting this to be the cause.

Any advice here?

[navygz19]

Very very occasionally mine does that doo but only on very cold days, particularly if it wass very warm the day before. A constant sputtering however would suggest a bad valve that can't hold compression but it doesn't sound like that's the issue w/ yours.

[SnakeS]

would this problem also apply to a 2003 infiniti g35 it's the same engine right?

[navygz19]

yes, it is the same engine, but I haven't done any sort of research on the Infiniti line w/ this engine (FX35, G35, M35)

[navygz19]

Good, this is finally pinned.

[husky570]

navygz19, on Jun 20 2007, 06:10 PM, said:

Good, this is finally pinned.

Anybody do this job themselves? If so would they be willing to do a step by step walk through on it with some pics or diagrams ?------This seems important enough to warrant this, especially for us who do not have warranties still in effect and who cannot afford to have their motors severly damaged.

[navygz19]

Yeah, Jarsiff did it a few weeks ago, maybe he could write some sort of a procedure for this...

[husky570]

navygz19, on Jun 26 2007, 08:24 AM, said:

Yeah, Jarsiff did it a few weeks ago, maybe he could write some sort of a procedure for this...

Well couldnt wait any longer, was sweating bullets on this one , so I went out and took the plunge and locktited all the power valve screws, wasnt too bad a job actually, took about 1 1/2 hours to do, feel loads better, all the screws were tight , and seemed to have some kind of thread lock on the threads already, I am assuming it was from the factory because it does not appear that the intake and surrounding paraphanelia has ever been took off before. But now I know for SURE that they are all tight and with thread locker!! Now to figure out how to resolve my oil consumption problem.

[PDCCD]

husky570, on Jun 26 2007, 08:22 PM, said:

Well couldnt wait any longer, was sweating bullets on this one , so I went out and took the plunge and locktited all the power valve screws, wasnt too bad a job actually, took about 1 1/2 hours to do, feel loads better, all the screws were tight , and seemed to have some kind of thread lock on the threads already, I am assuming it was from the factory because it does not appear that the intake and surrounding paraphanelia has ever been took off before. But now I know for SURE that they are all tight and with thread locker!! Now to figure out how to resolve my oil consumption problem.

Yeah, Great. Now how did you do it? You guys have me freaking out now LOL. I just put all this money into lifting my 02', and now i hear the engine could blow. Good grief. Could you post some details please? What year/model was your truck. It's interesting that you found locktite. I'm sorry i can't offer you any help with your oil consumption problem. It's either burning, which it dosen't appear to be (no smoke) or leaking somewhere. If not on the ground, then into your system. thanks for any light you can shed.

Pete

[husky570]

PDCCD, on Jun 27 2007, 04:42 AM, said:

Yeah, Great. Now how did you do it? You guys have me freaking out now LOL. I just put all this money into lifting my 02', and now i hear the engine could blow. Good grief. Could you post some details please? What year/model was your truck. It's interesting that you found locktite. I'm sorry i can't offer you any help with your oil consumption problem. It's either burning, which it dosen't appear to be (no smoke) or leaking somewhere. If not on the ground, then into your system. thanks for any light you can shed.

Pete

2001 pathfinder , just emailed navygz19 with the procedure on how to do , email him for a copy of it , and Ill try to post later, ( running late for work at the moment). Was a very easy , straight forward and not technical procedure, do not be overwhelmed---and gives PEACE OF MIND when done. The oil prob appears to be a design flaw in the valve cover baffles that trap oil and allow it to be siphoned out the PCV , only fix is to install valve cover that has different baffle it appears.

[PDCCD]

husky570, on Jun 27 2007, 09:11 AM, said:

2001 pathfinder , just emailed navygz19 with the procedure on how to do , email him for a copy of it , and Ill try to post later, ( running late for work at the moment). Was a very easy , straight forward and not technical procedure, do not be overwhelmed---and gives PEACE OF MIND when done. The oil prob appears to be a design flaw in the valve cover baffles that trap oil and allow it to be siphoned out the PCV , only fix is to install valve cover that has different baffle it appears.

Thanks a ton. I'll email him. Now how the heck are you supposed to find a valve cover with a different baffle design? That sucks. But why don't i have the problem and you do? Mines only a year newer. heck, alot of us have this truck, and i haven't seen much about oil consumption, but i haven't been looking either. Anyway, thanks again.

[02silverpathy]

Though I am helping, we are heading off topic...however, to stop oil from going through the PCV line should be a small pipe cleaner looking part in a hard line that will stop oil from returning all the way through. I only know this because of my late 3.3. When I replaced the Dizzy the hard PCV line came off also to get a good cleaning and found there to be much sludge and this pipe cleaner thingy that my shop said to put back in that it was for this exact reason. I don't see why you couldn't add this to another line if you wanted to, you just need it to be a snug fit so it could not relocate itself!

[navygz19]

PDCCD, on Jun 27 2007, 09:28 AM, said:

Now how the heck are you supposed to find a valve cover with a different baffle design?

I would start by checking HERE . This looks like a decent site and I've already had a few replies for various parts I've requested info. for. Plus, there are more Pathy's on this site than any other I've ever seen.

[navygz19]

In addition, check page EM-10 in the Pathfinder FSM for a detailed view of the IM, TB and all hardware along with the torque specs. for everything.

[jlg]

nice

this is the kind of thing you're glad to know but wish you didn't know.