Guide job in progress

Post by **Q45ver** » Mon Jan 09, 2006 7:28 pm

I reluctantly left my Q this morning at the local Nissan dealer to change out the guides. I had previously given them the parts list I had gotten here. It wasn't long before I recieved a call telling it would take a bit longer due to additional parts that needed to be ordered such as a plennum gasket and valve cover gaskets... I have checked most of the feedback from people doing this job and have seen only a few mentioning removal of the plennum or valve covers. Are they going overboard here? Now that they have all that apart I told them to change out the plugs. The car has 50K on it but figure now is the time to do it. How long do the plugs normally go?

Post by **Q451990** » Mon Jan 09, 2006 8:05 pm

Plenum removal is absolutely not necessary! Rocker covers don't need to be removed unless they're replacing the chains or the chains jumped time during the process.

Plug replacement interval is 60K, but galling into the heads due to age is a concern at 15 years. I had mine replaced on "Q2" during her guide job at 47K.

Here's a pic. during my guide job... note that the rocker covers are still in place...

Heath

Post by **Raxephon** » Mon Jan 09, 2006 8:21 pm

You can look at it as preventive maintenance.

Still, you might wanna pick some of this up .

Post by **chinaonnitrous** » Mon Jan 09, 2006 8:29 pm

yeah at the stealership...youd better pick up some Costo industrial sized package. Cuz your gonna get it IDB...really hard.

anlasak wrote:You can look at it as preventive maintenance.

Still, you might wanna pick some of this up .

Post by **maxnix** » Tue Jan 10, 2006 4:06 am

If you read enough, you would realize that the standard timing chain guide replacement for Infiniti dealers involves the timing chains also, which don't need to be replaced normally.

Since the dealer offers a warranty on labor and parts, they tend to take it to the limit on replacement of parts to protect themselves. Talk to them and they may let you partially waive the warranty.
Modified by maxnix at 5:28 AM 1/11/2006

Post by **Q45ver** » Tue Jan 10, 2006 7:51 pm

How should it work for labor hours if they exceed the book time? They quoted me the warranty hours aloted for chains which worked out to 1600. They have taken longer than they anticipated I would say. I pick it up tomorrow.

Post by **Q45tech** » Wed Jan 11, 2006 2:08 am

$1600 with parts sounds extremely fair to me from a dealer. We charge $1100 for just the guides without main chain replacement and another $1,000 if changing chains is required. {other than oil chain which is included in $1100 along with new guides and tensioners.}

Be sure to ask for all your old changed parts, pieces so you can make sure nothing has cracked and fallen into oil pan. We charge another $500 to remove pan if parts are missing.

Therefore it can range from $1100 to a max of $2600 at $75 per hour depending. Obviously bent valves and head rehabiltation is extra.

Dealers/techs have been known to just change slack side guides and charge less............just the guides nothing else no tensioners, no oil chain, no oil guides.

Understanding EXACTLY what was done is very important!

Post by **Q45ver** » Thu Jan 12, 2006 1:12 pm

Nice to hear from Qtech, you are the authority. Wish I was close enough for T3 (is that right?). Anyway the story continues. I'm on a business trip now and had to leave with my car still in the shop. After 2 1/2 days they had it back together, but couldn't get it to start. Don't know why and told me I won't see it before Friday. Well, like I said I'm on the road so it will have to be my wife that picks it up. They mentioned some guides also up under the valve covers which I certiainly have never heard of. This is why they had to remove em?? I think not, I'm sure it is because of the procedure in the manual being for chain replacement. So far I have been cool and collected but ...What next?

Post by **maxnix** » Thu Jan 12, 2006 2:57 pm

Bet you are correct.

Post by **Q45ver** » Fri Jan 13, 2006 12:43 pm

Help! My Q has now been in the shop for a week. I just found out that they are starting over! They have timed it wrong! How many teeth out would this have to be before contact with the valves.? How much time they spent cranking the thing over before figuring this out I don't know.

Post by **nuQ** » Fri Jan 13, 2006 3:39 pm

good luck and keep us posted!!! the second you can physically get to the dealership and check on what's going on,,THE BETTER. there is no need to take the plenum off for the guides,,mine wasn't. your bill will go way up when they start telling you all the hoses that have to be replaced!!! this is a very good example of finding an auto tech familiar with the G50. even taking it to the dealer is no guarentee you will have a knowledgable tech doing the work (many nissan/infiniti techs have never looked under the hood of a G50, let alone have any training with them). might (definitly!) be worth it to make a long drive to get quality work done on the Q!!! anyone in the northeast with more substantial work needed on the Q should go to keith vanmeter in jersey. he did my guides and more and everything was 100%. maybe you can stop all the forward progress at the dealer,,tell them you're a member here,,,maybe even print out the chain guide procedure and hand that to them!!!! try to stop any unnecessary (i.e. expensive!) work that doesn't involve the chain guides! good luck again!

Post by **maxnix** » Fri Jan 13, 2006 7:27 pm

nuQ wrote: this is a very good example of finding an auto tech familiar with the G50. even taking it to the dealer is no guarentee you will have a knowledgable tech doing the work (many nissan/infiniti techs have never looked under the hood of a G50, let alone have any training with them). might (definitly!) be worth it to make a long drive to get quality work done on the Q!!!

Oooops! That reminds me I do have the name of a shop in Vancouver form a board member located there.

Email me if you need it.

Post by **Q451990** » Fri Jan 13, 2006 8:54 pm

Q45ver wrote:They have timed it wrong! How many teeth out would this have to be before contact with the valves.?

My understanding is one tooth and it runs terribly - two and they're hitting. Once it's timed they need to do a leak-down test/compression test and see what's going on. I don't like the way this is sounding. The good news is that they are a dealership (with deep pockets?) Ask them to say the words "new long block" with you...

Heath

Post by **Flagship-Q** » Sat Jan 14, 2006 5:19 am

And possibly you attorney if needed!

Post by **Q45ver** » Sun Jan 22, 2006 11:10 am

Well my Q is finally home. I left it at the dealer 9th of Jan and picked it up on the 20th! They did end up doing the job twice, but it turns out that the problem was a blown injector fuse. They investigated the fuel supply but went looking elsewhere when they detected a pulse being sent to the injector. The blown fuse meant that although there was a pulse, there was no energy to actuate them. The poor mechanic did the job twice and then it still wouldn't start until they finally found the fuse gone.

Can someone direct me to some pictures of someones guides that are cracked or broken? I have the parts from mine and they look new.

Post by **Raxephon** » Sun Jan 22, 2006 11:49 am

Q45ver wrote:Can someone direct me to some pictures of someones guides that are cracked or broken? I have the parts from mine and they look new.

http://q45.org/guidereplacement.html

zerothread?id=114337

Post by **maxnix** » Sun Jan 22, 2006 6:30 pm

Q45ver wrote: I have the parts from mine and they look new.

Definitiely have to check them against new so you are certain there are no pieces in the sump!

Anything missing not recovered is presumed to be lurking in the sump waiting to hurt your engine later. Most likely your oil pump, then everything downstream as it is starved of lubrication.

Post by **Q451990** » Sun Jan 22, 2006 8:27 pm

No surprise... mine looked new at 47K. If they're plastic and not metal backed I would think it's safe to assume you're OK. Two of the four guides are all plastic - the other two were already metal backed.

Heath

Guide job in progress

Guide job in progress

Re: Guide job in progress (Q45ver)

Re: Guide job in progress (Q45ver)

Re: Guide job in progress (anlasak)

Re: Guide job in progress (Q45ver)

Re: Guide job in progress (maxnix)

Re: Guide job in progress (Q45ver)

Re: Guide job in progress (Q45tech)

Re: Guide job in progress (Q45ver)

Re: Guide job in progress (maxnix)

Re: Guide job in progress (Q45ver)

Re: Guide job in progress (nuQ)

Re: Guide job in progress (Q45ver)

Re: Guide job in progress (Q451990)

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Re: Guide job in progress (Q45ver)

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