Changing the Spark Plugs on the 3.5L V6 - Nissan Forums : Nissan Forum
 
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Old 07-14-2012, 02:35 PM
dagreek dagreek is offline
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Changing the Spark Plugs on the 3.5L V6

I searched this forum for a guide/tips on changing the spark plugs on my 2007 Altima V6 but didn't not come up with much. I figured by now someone would have written up a nice insturctional on it with pictures but no luck. Anyway, i'm going to be tackling this job soon as my car has 120K on it and it's way past the recomended plug change that i should have done at 105K, although it's still performing well.

This will be my first plug change on a V6, previously i've owned 4 cylinder engines and they are very easy as far as spark plug changes go. With this car, the front three look extremely easy but the back bank of spark plugs are covered and it looks like it's going to be a pain in the arse to get to these. I have the service manual but i was wondering if any one has done this yet and has any advice or things i need be carefull with. Here are a few questions I have just looking at the service manual and my car:

1) Do I have to take the intake manifold collector completely off? It looks like i may be able to remove all of the bolts securing it to the engine, disconnect it from the air duct hose, remove the coolant hoses attached to the throttle control actuator and lift it up enough to reach the plugs.

2) Do I need to replace the gasket on the intake manifold collector with a new one?

3) Do I have to drain the engine coolant? This is one of the steps in the service manual for removing the intake manifold collector. It looks like coolant is just going to the throttle contol actuator, how much coolant will come out of this though really?

Sorry for all the questions, just trying to figure out the least labor intesive and smartest way of doing this. I greatly appriciate any tips you guys can give me. And I'll try to take pictures to document my experience.

G



2007 Nissan Altima 3.5 SE w/ CVT Super Black
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K&N drop in filter
Stillen Cat-back Exhaust

2006 Nissan 350Z 6-Speed Manual Super Black
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Old 07-14-2012, 08:22 PM
pmueller pmueller is offline
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From the FSM procedure I did not have to:
1. Release the fuel pressure.
2. Remove cowl top (if you can reach behind the intake manifold collector and remove the vacuum hose clamps and remove the nut from a bracket that supports a heater hose).
3. Remove windshield wiper assembly (for the same reason as removing the cowl top).
4. Partially drain the coolant (there was very little coolant when I removed the 2 throttle body coolant hoses).
5. Disconnect the fuel injector connectors.
6. Un-bolt the throttle body or power valves.

You should replace the intake manifold collector plenum gasket (obtain from Nissan) and follow both the loosening and tightening sequence from the manual. You need to remove all hoses and brackets that will allow you to remove the intake manifold collector.
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Old 07-14-2012, 09:23 PM
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sprocketser sprocketser is offline
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Well , a pita to change spark plugs , gotta do mines one day , I guess I ll have someone else doing it ! lol

05 A/T SE R Altima . eBay Grill / Matt Black Mid bumper . EBC Ft RedStuff Pads , Total/Fram Filter , RP MaxATF , Motul Brake Fluids , Mobil PSF . Interstate Battery , Michelin Pilot A/S Plus
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Old 07-17-2012, 03:34 PM
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Dierksman Dierksman is offline
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I just installed a intake manifold spacer and if you follow the same directions you should get to the back plugs.

install pics

2007 Altima 3.5 SE 4 door
Upgrades- Weapon-R Dragon intake, axle back exhaust w/ 4" tips, Xentec 6K HID, Red brake calipers. R1 Concepts Eline drilled & slotted rotors, Posi-Quiet ceramic pads, rear spoiler, Racingline Y-pipe & CXJ Phenolic intake manifold & TB Spacers.
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Old 07-28-2012, 09:57 PM
dagreek dagreek is offline
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Thanks ya'll, especially Dierksman, those pics and step-by-step instructions were a huge help. Crazy how similar the altimas and maximas are, there were a few differences but for the most part it was the same.

I took a few pictures, i may try and put together a How-to on this project. It took me about 3 hours, mostly because i like to take my time and get everything right but it wasn't too difficult.



2007 Nissan Altima 3.5 SE w/ CVT Super Black
27% tint all around
K&N drop in filter
Stillen Cat-back Exhaust

2006 Nissan 350Z 6-Speed Manual Super Black
Sponsored Links
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  Nissan Forums : Nissan Forum > Nissanclub.com Nissan - Infiniti Enthusiast Forums > NISSAN ALTIMA FORUMS > 2007-2012 Nissan Altima Forums > Engine Performance (2007-2012)

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