Jeff Williams

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3365 posts
1994 Q45t 2000 I30t 2000 Corvette 1982 Corvette 1973 Corvette 1962 GMC P/U
Alabaster AL
8-2-2002
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| « Re: Finally got around to replacing the driver's ... (Jeff Williams) | 4:33 PM 3/19/2005 |
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Look at that gunk!
Attachment: LeakingVC2.JPG (177232 bytes, downloaded 5464 times)

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Jeff Williams

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3365 posts
1994 Q45t 2000 I30t 2000 Corvette 1982 Corvette 1973 Corvette 1962 GMC P/U
Alabaster AL
8-2-2002
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| « Re: Finally got around to replacing the driver's ... (Jeff Williams) | 4:34 PM 3/19/2005 |
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Here is step 1. Remove the FSTB and filter box
Attachment: VCGasket1.JPG (250440 bytes, downloaded 5283 times)

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Jeff Williams

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3365 posts
1994 Q45t 2000 I30t 2000 Corvette 1982 Corvette 1973 Corvette 1962 GMC P/U
Alabaster AL
8-2-2002
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| « Re: Finally got around to replacing the driver's ... (Jeff Williams) | 4:37 PM 3/19/2005 |
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Step 2. Then remove the plastic covers and disconnect the wiring harness & vacuum lines.
Attachment: VCGasket2.JPG (277084 bytes, downloaded 5037 times)

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Jeff Williams

Offline
3365 posts
1994 Q45t 2000 I30t 2000 Corvette 1982 Corvette 1973 Corvette 1962 GMC P/U
Alabaster AL
8-2-2002
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| « Re: Finally got around to replacing the driver's ... (Jeff Williams) | 4:38 PM 3/19/2005 |
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Step 3. Remove the spark plug cover.
Attachment: VCGasket3.JPG (255672 bytes, downloaded 4747 times)

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Jeff Williams

Offline
3365 posts
1994 Q45t 2000 I30t 2000 Corvette 1982 Corvette 1973 Corvette 1962 GMC P/U
Alabaster AL
8-2-2002
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| « Re: Finally got around to replacing the driver's ... (Jeff Williams) | 4:39 PM 3/19/2005 |
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Step 4. Remove the Coil Packs, Throttle Body and EGR.
Attachment: VCGasket4.JPG (289144 bytes, downloaded 4657 times)

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Jeff Williams

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3365 posts
1994 Q45t 2000 I30t 2000 Corvette 1982 Corvette 1973 Corvette 1962 GMC P/U
Alabaster AL
8-2-2002
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| « Re: Finally got around to replacing the driver's ... (Jeff Williams) | 4:41 PM 3/19/2005 |
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Step 5. Bend the EGR tubs out of the way, remove all the acorn nuts, and snake the valve cover out of the engine bay.
Attachment: VCGasket5.JPG (292616 bytes, downloaded 4461 times)

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Jeff Williams

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3365 posts
1994 Q45t 2000 I30t 2000 Corvette 1982 Corvette 1973 Corvette 1962 GMC P/U
Alabaster AL
8-2-2002
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| « Re: Finally got around to replacing the driver's ... (Jeff Williams) | 4:42 PM 3/19/2005 |
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Step 6. Remove all the oil and dirt from the face of the head. Be sure to remove the RTV around the crank sensor.
Attachment: VCGasket6.JPG (295380 bytes, downloaded 4274 times)

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Jeff Williams

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3365 posts
1994 Q45t 2000 I30t 2000 Corvette 1982 Corvette 1973 Corvette 1962 GMC P/U
Alabaster AL
8-2-2002
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| « Re: Finally got around to replacing the driver's ... (Jeff Williams) | 4:43 PM 3/19/2005 |
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Step 7. Remove the old dried crusty valve cover gasket and clean up the valve cover.
Attachment: VCGasket8.JPG (305124 bytes, downloaded 4066 times)

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Jeff Williams

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3365 posts
1994 Q45t 2000 I30t 2000 Corvette 1982 Corvette 1973 Corvette 1962 GMC P/U
Alabaster AL
8-2-2002
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| « Re: Finally got around to replacing the driver's ... (Jeff Williams) | 4:45 PM 3/19/2005 |
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Install the new gasket. Put the engine back together, and test drive her. It is much easier to put back together, than to take apart. It is a good idea to put some NISSAN black RTV on the half moons, and around the crank sensor.It took me a little over 3 hours, from start to finish.
Attachment: VCGasket9.JPG (266848 bytes, downloaded 3869 times)

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redmanfx
I start seats on fire.

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1790 posts
92 Q45a
Morehead City, NC
3-29-2004
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| « Re: Finally got around to replacing the driver's ... (Jeff Williams) | 4:49 PM 3/19/2005 |
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Nice!!! This will help alot of people!! My valve cover gasket replacement was a pain in the back too! Two days and 4 percocet latter I recovered!! red

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3rd Q
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323 posts
Chicago
4-21-2004
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| « Re: Finally got around to replacing the driver's ... (Jeff Williams) | 4:56 PM 3/19/2005 |
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Jeff- Great post! I will have to do the same sometime - miniscule leak- but it bugs me.Off the subject, did you happen to see where the idiot light oil pressure sensor screws in. I'm installing an electric op gauge and haven't been seen where it is near the exhaust manifolds. Any help appreciated. Thanks again for the FSTB! Paul
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911/Q45
Offline
1376 posts
Autos, Fitness
San Luis Obispo, CA
7-23-2002
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Oil pressure sensor is mid block below the exhaust headers. Access is from the bottom.
Black over Gray 1990 Q45, JWT ECU & TCU, Rear Sway Bar, Eibach and Tokico, Stillen Tension Rods and Strut Brace , Skyline Brakes, Steel Hoses, 17x8 Wheels, 255/45 Sumitomo HTR+. Really is Mom's old car with 90K miles!
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elwesso
Super Moderator

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30835 posts
94 Q45t 5 speed NICO Track Slut
Anderson and Angola IN
2-23-2003
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| « Re: (911/Q45) | 5:42 PM 3/19/2005 |
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| Quote, originally posted by 911/Q45 » | | Oil pressure sensor is mid block below the exhaust headers. Access is from the bottom. |
yes, i was unsure on how to get it out though.. is it best to go thru the manifold runners? Or can you wedge a socket and wrench in between the block and that. Jeff im impressed to see how clean your engine is, especially after all those miles... what oil were you running, durablend?
The Infiniti Q45 Resource, Q45.org | Nissan VH series website NICO Sponsor Directory | Infiniti Of Scottsdale, 1-888-216-5328, ask for Justin, say Wes sent you.
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gniknave
Praise the Lowered

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4777 posts
90 Infiniti Q45, 05 Nissan Titan LE Crew Cab
Fishers In
8-26-2004
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Jeff, I love you man. I was just about to search for a thread on this subject and BAM right here. I wanna send you some flowers and candy!
'05 Nissan Titan Crew Cab LE
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DAEDALUS

Offline
6231 posts
1990 Q45
El Segundo, CA
7-22-2002
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| « Re: (elwesso) | 6:02 PM 3/19/2005 |
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| Quote, originally posted by elwesso » | yes, i was unsure on how to get it out though.. is it best to go thru the manifold runners? Or can you wedge a socket and wrench in between the block and that. |
http://forums.nicoclub.com/zerothread?id=50050 Just get a crow's foot socket on it and undo it by hand.
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Q451990
Old School Q Guru

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6924 posts
1990 Q45 - 96K, 2005 G35 Sedan - 51K, 2004 Frontier M/T - 57K
Columbia, SC
7-23-2002
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Nice write-up! I think your three hours is about book time, so you're pretty speedy! I remember my first time of replacing the gaskets on Q1 taking two days. The rubber gasket vs. RTV has something to do with that. I also removed the EGR tube from the exhaust, which took a while to figure out... had to find a special wrench for that.Heath
1990 Infiniti Q45 **** AKA "Q2" 2005 Infiniti G35 **** Sedan A/T 2004 Nissan Frontier.. King Cab M/T
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maxnix
NICO Supporter

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38 posts
1995 Q45, 1995 Q45t, 2000 Q45
Austin TX
7-22-2002
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| « Re: (Q451990) | 9:32 PM 3/19/2005 |
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Great article and pictures, Jeff. Good to see Tangalora has some competition for best article author.
Brian 1995 Q45 & Q45t & 2000 Q45
Discover the power of the button!
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3Q Jay
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1620 posts
94Q45a, 97Q45t, 95Q45a, 95altima(daughter's), 94altima (son's)
Cocoa Beach, FL
5-8-2004
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| « Re: Finally got around to replacing the driver's ... (Jeff Williams) | 9:53 PM 3/19/2005 |
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great pix and write up, Jeff.my first thought was also that your engine looks clean for >200k. second thought [off topic], i see the upper [cam] chain guide in place. The ka24de [4 cyl-altima, 240sx] no longer uses these, in fact most owners end up removing them because the chain slaps the guide and clatters, and in a few cases these upper guides have actually broken on the KA. is this ever an issue on the VH45 or VH41?
HG50(x2)/FGY33/U13(x2)
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DAEDALUS

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6231 posts
1990 Q45
El Segundo, CA
7-22-2002
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No, they're metal.
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3rd Q
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323 posts
Chicago
4-21-2004
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| « Re: (911/Q45) | 10:14 PM 3/19/2005 |
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Thanks for the info guys.(Jeff, didn't mean to jack your thread) Awsome job and pics! Paul
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3rd Q
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323 posts
Chicago
4-21-2004
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| « Re: (DAEDALUS) | 10:28 PM 3/19/2005 |
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Daedulus, Thanks for the link! Paul
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3Q Jay
Offline
1620 posts
94Q45a, 97Q45t, 95Q45a, 95altima(daughter's), 94altima (son's)
Cocoa Beach, FL
5-8-2004
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| « Re: (DAEDALUS) | 10:30 PM 3/19/2005 |
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| Quote, originally posted by DAEDALUS » | | No, they're metal. |
the ones on the ka24 also are metal backed [at least mine were]. most that I've seen including mine have a non mettalic face that contacts the chain. since no one seems to bring it up here, indeed i suspect that it is not a problem, just tryiing to understand if the upper chains start to rattle as the miles go up and the tnsioners can't 100% keep up with the stretch.
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Jesda
Nice Pants, full of bacon and win

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30647 posts
LETS GO VANNING
ITS A PARTY IN THE USA
5-5-2003
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Never heard of it ever being a problem on the VH engines.
| Quote, originally posted by MinisterofDOOM » | | Get out of my gene pool. And take your ES350 with you. |
BUY INFINITI PARTS - 1-888-216-5328 | NICO Porn Thread | http://www.q45.org | http://www.vh45de.com
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Jeff Williams

Offline
3365 posts
1994 Q45t 2000 I30t 2000 Corvette 1982 Corvette 1973 Corvette 1962 GMC P/U
Alabaster AL
8-2-2002
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| « Re: (elwesso) | 5:46 PM 3/20/2005 |
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| Quote, originally posted by elwesso » | yes, i was unsure on how to get it out though.. is it best to go thru the manifold runners? Or can you wedge a socket and wrench in between the block and that. Jeff im impressed to see how clean your engine is, especially after all those miles... what oil were you running, durablend? |
Since 105K, I ahve been using Castrol GTX 10-W-30, and changin it every 2,500 miles, or 3 weeks. Sometimes, I go as long as 4K, but it makes me nervous. I put about a tablespoon of Lucas oil treatment in each time, just for fun. The previous owner took it to Jiffy lube every 3K. He bought the car in 1997, with 30K on it. It was dealer serviced from the first leasee. Thanks for the compliments. I doubt I will ever be as detailed as Tangalora, but it is something to strive for.
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94 Q45
Offline
38 posts
Los Angeles CA
8-19-2006
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| « Re: Finally got around to replacing the driver's ... (Jeff Williams) | 10:28 AM 1/27/2007 |
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Hi, Thank you for the valve cover gasket removal direction, it help me a lot when I try to DIY on it, but after taking all the EGR, Throttle body and wiring harness out, when I tried to pull the cover off, there is a long big tube that is underneath the throttle body which is in the way and also the EGR tube too. Does anybody know how to pull cover off and do I have to remove the tube underneath the throttle body and the EGR tube? Thank you very much for your help. My car is a 94 Q45 and I am changing the driver's side valve cover gasket.
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Damicci

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342 posts
1994 Q45/President
Tucson AZ
6-8-2004
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| « Re: Finally got around to replacing the driver's ... (Jeff Williams) | 11:39 AM 2/5/2007 |
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I thought I would give this a bump as I will be doing this same thing on the 1994 Q45 I just bought. Would it be a good idea to do the passenger side as well? I don't want to have to get back under there any time soon. It is currently not leaking though.Once again thx for the great write up.
SQUARE 1 iccimad at hotmail (dot) com
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Jeff Williams

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3365 posts
1994 Q45t 2000 I30t 2000 Corvette 1982 Corvette 1973 Corvette 1962 GMC P/U
Alabaster AL
8-2-2002
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| « Re: Finally got around to replacing the driver's ... (Damicci) | 6:07 AM 2/6/2007 |
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I did mine in 2 different sessions. By the time I had done the first one, I didn't have time for the second. I waitied a long time to do the driver's side. I wanted 4 good hours of sunlight and no rain.There is little that is common to both valve covers. It all depends on your way of doing things. I usually like to dig in and not stop until I am completely done, but we had a dinner engagement the night I did the passenger side, and I didnlt want to leave the car incomplete over night. As it was, I waited a long time to do the driver's side. The passenger side was the one that smoked after driving around. I was embarrased, when the daughter of a friend ran back into the house and said "Your car is on fire!". We had drived 140 miles to visit them. That was the weekend before I did the first one.
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94 Q45
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38 posts
Los Angeles CA
8-19-2006
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| « Re: Finally got around to replacing the driver's ... (Jeff Williams) | 6:23 PM 2/6/2007 |
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Hi, I did the driver's side valve cover gasket recently and now the smoke start to come from the passenger side cylinder head area, I need to do the passenger side again. Does anyone know if I have to remove anything like the A/C part(container) near the firewall to take out the cover or there is enought clearance once I take out all the vacuum hose. I hope I don't have to take out as much part as the driver's side to reach the valve cover. Thank you for the help.
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maxnix
NICO Supporter

Offline
38 posts
1995 Q45, 1995 Q45t, 2000 Q45
Austin TX
7-22-2002
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| « Re: Finally got around to replacing the driver's ... (94 Q45) | 3:27 PM 3/17/2007 |
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Good question about the AC plumbing on the passenger side.Besides that, I would like to know how the two clips holding the wiring harness on the driver's side are released as it would really help to get them out of the way. OK, here's the answer! Using a long small single bit screwdriver, as you look down into the clip, you well see a tab with a valley in the middle. Press this tab towards teh out side of the car and it will release and you can pull the clip up to release it. As an alternative, there are two 10mm headed bolts on the underside that go into the block. Lots of grit and dirt around my fastener holes.
Modified by maxnix at 5:29 PM 3/17/2007
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StillaYankee
Offline
13 posts
1994 Q45a
Land O Lakes FL
1-21-2008
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| « Re: (Q451990) | 7:25 AM 1/21/2008 |
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3 hours--unless you bring it to Infiniti of Tampa. They want 14 hours w/total cost of $2200! This is on top of the $3500 exhaust system they want to install and that's already after the $1200 in Nov '07 for anti-skid/traction control problem. Anyone know of a good mechanic in Tampa area that knows how to service a Q45? My valve covers weren't leaking until I brought it to them to repair leaking power steering hose.Thanks.
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Haitian_King

Offline
2803 posts
1992 Infiniti Q45
Willingboro NJ
1-13-2007
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| « Re: (StillaYankee) | 9:11 PM 1/26/2008 |
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Since you're in Florida, I'd recommend just humping it to T3. I need to do my valve covers as well. I don't know if it's both leaking, but I'm just going to do them both. This thread is the answer I've been looking for. I smell the oil burning on the exhause manifolds and I've been getting spots on the driveway and in my school's parking lot. I check my levels every couple of days, especially after a lengthy drive, and they've been ok. But I know that it can only get worse.
"Don’t buy a poorly maintained Q… It’ll be like falling in love with a high priced hooker! The sex will be great but you’ll be broke and up all night crying." - DrewQ45"I highly appreciate the wide range of knowledge Dennis contributes to the forum but you seem to be verging on the edge of Q45Tech worship. If he said air was bad you’d probably die from asphyxiation… Get a grip man!" - DrewQ45 "Those pics make my butt leak." - AZHitman "I pulled along side of one and stared at it. Then I saw the Hyundai badge and proceeded to vomit a little in my mouth." - Yours Truly
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Q45tech
Q45 Guru
Offline
13721 posts
1990 Q45 323,000 miles 19.5 years ownership
Marietta , Georgia
4-30-2002
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| « Re: (Haitian_King) | 8:16 AM 1/29/2008 |
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Active and TCS Q are a little more difficult [time consuming] we add 1 hour for each....................but 9 x $85 = $ 765 plus parts would include new spark plug labor................you would be surprise how the logic of simultaneously changing plugs is lost on a segment of population.
Copyright 2009. Nipuspan International Corporation. All rights reserved. This material may not be broadcast, rewritten or redistributed. http://www.t3atlanta.com/
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Q45dude
Offline
377 posts
94 Q45
Glendale CA
6-22-2005
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| « Re: Finally got around to replacing the driver's ... (Jeff Williams) | 6:03 PM 4/26/2008 |
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Need recommendation as to purchase the valve gaskets? what price am I looking at?thanks
94 Q45
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Haitian_King

Offline
2803 posts
1992 Infiniti Q45
Willingboro NJ
1-13-2007
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| « Re: Finally got around to replacing the driver's ... (Q45dude) | 10:06 PM 4/26/2008 |
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| Quote, originally posted by Q45dude » | | Need recommendation as to purchase the valve gaskets? what price am I looking at? thanks |
Infinitipartsusa.com Or call Joe. He'll give you a great deal. 94-96 Q's use an actual gasket, so it might run you a little more than what I spent for my 92.
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matdotcom2000
Offline
8 posts
94 Q45
Houston Tx
12-19-2008
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| « Re: Finally got around to replacing the driver's ... (Haitian_King) | 6:00 AM 12/20/2008 |
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Thanks for the how to I just finished replacing both my gaskets and it took me a whole weekend but I also replaced my alternatorMatt
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jackg35
Offline
17 posts
g35
beaverton oregon
1-20-2009
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| « Re: Finally got around to replacing the driver's ... (94 Q45) | 9:05 PM 1/30/2009 |
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replace both sides much better.
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