95 Q45 180K maintenance

[mdkcrf250r]

Hey guys great forum, I've already accomplished a lot of the problems I was having thanks to the info on this site. Just a couple questions. Does my 95 Q45 have a valve cover gasket or is it liquid sealed? What spark plugs does it take? And what kind of transmission oil does it take? And last I'm gonna be replacing a couple injectors, so the intake mani has to come off. I looked up the oem parts but without a pic I cant be sure which ones I need. Do I need the intake lower and upper manifold gaskets? Thanks.

[SanCarlosQ45]

94-96 use a rubber gasket which is not listed on Infiniti of Scottsdales website, so you must call to order them. Many recommend the oem NGK PFR5G-11 which can be found at local o'reilleys, autozone or what ever is in your area. Personally I went for the NGK Iridiums with no troubles after 25k which are about $7 a plug versus $10, just stay with NGK's.

Are you looking to change the ATF or are you topping off?

You will only need the upper gaskets, but you may need to replaces hoses if they are damaged from age or when pulling the intake. Many recommend knock sensor/harness replacement, but do as your budget supplies. I highly recommend going with OEM new injectors, or at the least Deatschwerks remans as the cheap injectors from auto parts stores with cause nothing but headaches; stay away from python or Beck/Arnley remans at all cost along with other remans. I have to replace a stupid python injector because it doesnt seal right even with oem o-rings.

If you order oem injectors you have to buy the o-rings as well because they do not come with them.

[mdkcrf250r]

I will be changing the ATF fluid along with the trans filter. FSM says Nissan ATF or equivalent, contact Infiniti dealer.

[SanCarlosQ45]

Make sure you get the gasket with one time use bolts. infinitipartsusa.com has a kit that is much cheaper than individual prices.

http://www.infinitipartsusa.com/partloc ... ryID=34381

Mobil 1 Synthetic ATF is one choice, but can be expensive. Any dextron III should be fine which is standard at auto parts stores. Might want to try this:

completed-the-home-brew-transmission-flush-t137129.html

[maxnix]

I will be changing the ATF fluid along with the trans filter. FSM says Nissan ATF or equivalent, contact Infiniti dealer.

Not unless you have a Sun or BG machine. You will just be doing a partial drain an refill to dilute the remaining expired fluid.

Don't forget the internal filter screen, O ring and one time use bolts.

[mdkcrf250r]

Ok slight change of plans, I'm just gonna drain/refill the trans, I'm trying to limit my costs here, and the trans actually shifts great. I'm also going to avoid pulling the intake mani at all costs, I'm a moto mechanic 5 days a week, and the last thing I wanna do is spend my day off wrestling with that damn manifold. Priority number 1 is replacing the valve cover gaskets and it looks like I can get to them without pulling the intake mani off.

[qship96]

Pull drainplug on trans pan and let it drip for a few hours and you should be able to get 4-5 quarts out { I easily get 5+ when doing this if car is parked on a inclined driveway with nose up} refill with fresh atf......repeat procedure daily until fluid looks like new on dipstick- may take 1-4 procedures depending on current color of fluid as seen on your dipstick. Once you have it looking like new, a single drain/fill every 15,000 miles will keep it looking new.

Changing internal filter screen is almost a complete waste of time, better to spend the time and money changing the external filter which is a much finer filtering cartridge type, similar to a oil filter and will clog light years before the internal rock catching only screen.

[maxnix]

If you don't drop the pan and check the screen, then you don't know the conditions of the internals if they have deteriorated. If you are an ASE certified tech, certainly an ATF exchange machine is close at hand? The plenum will have to come off for bad hoses or KS, so if you want to absolutely avoid it, get a new car.

In the VW, Audi, and BMW DI cars, the bif thing is carbon build up on the valves, a much more intensive cleaning process than the VH45DE plenum job.

[mdkcrf250r]

If you don't drop the pan and check the screen, then you don't know the conditions of the internals if they have deteriorated. If you are an ASE certified tech, certainly an ATF exchange machine is close at hand? The plenum will have to come off for bad hoses or KS, so if you want to absolutely avoid it, get a new car.

In the VW, Audi, and BMW DI cars, the bif thing is carbon build up on the valves, a much more intensive cleaning process than the VH45DE plenum job.

I bought the car for $1000 and I don't wanna invest tons of money into it then have it breakdown. Like I said the car shifts great. Having said that I might end up pulling the pan off at a later date to inspect, but for now I have more important things on the car to tackle. My hoses and knock sensor are fine. The only reason I was gonna pull the manifold was to replace injectors and make it easier to replace the valve cover gaskets. I should have been more clear, I'm not an ASE certified auto tech, I'm a motorcycle mechanic and this is my commuter car.

[qship96]

If you don't drop the pan and check the screen, then you don't know the conditions of the internals if they have deteriorated. .

The "condition of the internals" should be obvious by the way the car shifts.........who cares how "it looks", what matters is how it performs...... the screen will never clog unless the transmission grenades itself, and again you would notice the transmission is then no longer working. The important filter to service is the real filter, the one up near the radiator which actually collects debris smaller than the rock sized ones the internal screen stops.