Just need to know proper Spark Plug gap putting in new Plugs, also what Torque?


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I believe it says in the manual, but should be 0.044". Stick to the OEM Denso's or NGK Laser Iridium plugs if you want to keep with the 100k change interval.

Not sure on the torque - just needs to be enough to feel the crush washers crush. Check for any 2AR specs for this and they should turn up.

 

Tossing ruthenium hx ngk plugs in tomorrow

 

The first gen spark plug torque is 14 pound feet. Not sure about the second generation but wouldn't be surprised if it's close.

 

I’m at 170k now and I paid dealer to toss new set in with all the other stuff at 100k

OMG! The dealership had them in there at like 70lbs of torque. I could feel them almost cracking pulling them out.

NGK Plugs I put in are 13-14tq lbs. the two of the plugs, looks like the fine electrode deteriorated and fell off.

I set torque wrench 13lbs and did a double check click, so prob 14-15lb from second click

I tossed in the new NGK Ruthenium’s HX. And she’s purring! I disconnected battery for half hour to reset fuel trims. My other cars it works.

Cant even feel my car idling, and It said 36-37mpg on highway. Last week I drove 1000 miles to Florida and back, averaging 33.5 at 70-75mph. Total cost 60 each way in fuel

I have no doubt these new plugs are running better

 

Always helps to remove plugs when the engine is stone cold. Like early in the morning yet to be cranked, cold.

 

I did, this car has sat in garage for days untouched. Dealership just had them hammered down in there. Very unhappy with how tight they was. Probably the tightest/hardest cranked spark plugs ive ever removed. Any harder they would of been broken.

but if anyone is changing plugs, toss those rutheniums in. Very recommended, like I said. Can barely feel it idling its so smooth. tossed them in 2 cars now in 2 days, tossing them in my gf's car in a few days.

 

On the bright side, you have strong well threads. The same situation in a 1st gen tC would likely strip them. The repair is a major pain.

 

I always put a little anti-seize on my plugs. Makes them much easier to remove down the line. Plugs without it even torqued properly can be a bear to remove after all those heat cycles.

Glad you're happy with the plugs, though you probably would have been just as happy with normal Iridiums after seeing the state of those Densos.

 

I've never had an issue with NGK's seizing or getting stuck. I've been using them faithfully in all my cars/motorcycles even lawnmowers.
Just thought Rutheniums looked neat, these should last just as long as the Iridiums, got them on sale for 3 bucks off, so 9 a piece.
Not unfair, but it's more of experiments then anything, but I will tell you this.

In my Turbo Mustang, it's running so much better than the OEM plugs. The OEM plugs looked fine and everything and perfect gap, but it's just idling better must be burning a hair better. (it's tuned and everything).
There's 2 types of these new plugs, DFE double electrocute and PSPE no idea what it stands for, but it has a little piece under it like a step down for turbo cars. I will report back over next year or two on longevity for future people.
But it only took 10-15mins to swap plugs, super easy.

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