[vegasjerry]

Hi All

I have a 2008 Frontier with the V6 / Automatic.

What would be the best plugs to replace the originals? DILFR5A11?
How many ft lbs of torque to tighten?

Thanks

I recommend NGK PLFR5A-11, or the stock number is 6240. Same plug. .043 gap. Put a SMALL dab anti seize on the threads. I hope you have by passed the trans cooler lines at the radiator? If not DO so at once I recommend. Questions ?? Check the PVC hose on the passenger side . It run to the back of the engine. I bet it is very hard. If it cracks it will allow air to enter and run lean. Dealer Item. But it needs changing. Maybe the PCV valve too ? It's very hard to get to. Questions ?? Jerry.

 

[vegasjerry]

Did you have fun changing the hose and the PCV valve on the pathfinder? Maybe there was more room to work back there.? You found that hose to be very hard didn't you?

 

[vegasjerry]

I took an old 24mm or 3/4" wrench and cut it in half.....only could unscrew it 1/4 turn at the time....the hose wasn't fun getting off either...but I did change the plugs without taking the intake off.

amazing that you got the right front plug out ? Have you cleaned the Mass airflow sensor and the throttle body? CRC makes spray chemicals just for them. separate products. they work great !

 

[vegasjerry]

The NGK 6240 Laser Platinums will work fine in 2007 and later VQ40DE engines; it was the stock plug on the 2005-2006 VQ40DE engines and then Nissan went to the Laser Iridiums in 2007. In the same sense, you can use the Laser Iridiums in the earlier, 05-06 engines. You will not notice any difference in performance. The Laser Platinums are a few dollars cheaper per plug. Both have 105,000 interval schedules, but the Laser Iridiums will actually last closer to 120000-130000 miles.
As far as putting a dab of anti-seize on the threads of the plugs, NGK actually recommends using nothing on the thread as it can have an affect the torquing of the plug during installation, which is 18 ft/lbs.

I want to get them out down the road with out breaking one or more off in the head. UGH. High mileage engines scare me to try and remove the original ones. A DAB of anti seize will prevent that. 18 or 20 foot pounds of torque is more than enough. Jerry.

 

[vegasjerry]

I just bought and put in some NGK LFR5AIX-11. My 08 Frontier V6 had the original plugs at 101K miles. Came pre-gapped at 0.043. I put some anti-seize on them and torqued them down to 15 ft lbs.

Pic of old ones...first three on driver side second pic is passenger side

What was the gap n the old ones when you removed them . Much wider than new?

 

[vegasjerry]

Thanks guys...these seemed to be gapped perfectly and I did not adjust any.

For antiseize, I took a small dab, smaller than a Q-tip, rolled it around my fingertips and then rubbed some on the threads. Saw some videos where folks had the threads coated way too think I would think. The old ones whined and screeched getting them out; afraid I was going to break one off.

You did perfect by adding the anti seize in just the right amount. Now your next project is cleaning the mass air flow sensor, and the throttle body. The air sensor is the part that's sitting up in the air tube from the air filter to the throttle body. It has 2 phillips screws, and wires connecting it. U need a special cleaner to use on it. CRC makes such a cleaner. Can't hurt the plastic parts. The air flow sensor regulates how much fuel to send to the computer. It gets gummy and things stick to it as the air from the filter flows past it. U will notice a big difference in the idle and running once you clean it. Then clean the throttle body. It's the plate that opens to allow air to pass to the engine. Brass colored most likely. CRC also makes a cleaner just for it too. Use a clean rag to clean the plate. Avoid spraying too much cleaner there. It runs straight into the cylinders. Wal mart has both . Questions ?? Jerry..