Spark Plug Replacement

[onanysunday]

It may be because I don't own a true Taurus SHO, just the juicy power bits (and not the luxury amenities) as it's a bare bones Police Interceptor sedan but with the nice twin-turbo 3.5L EcoBoost (SHO) engine.

 

[Majestic]

That makes sense.

 

[yaycandy]

“Factory recommended 42psi”
This is shoforum, not police interceptor forum

 

[onanysunday]

Guilty as charged? I mainly care about the 3.5EB mod/ upgrade aspects of this site more than anything else and most everything else on the web is F150 oriented which I don't care as much about and appears to use a different engine layout than the Taurus SHO platform.

 

[Ta2dResqr]

No, this is unrelated (or that it really matters at this point) but it's 42 psi cold as indicated on the doorjam not on the tire itself and these tires have a AA traction rating.

Ahh, 2013 FPIS

 

[Ta2dResqr]

No, this is unrelated (or that it really matters at this point) but it's 42 psi cold as indicated on the doorjam not on the tire itself and these tires have a AA traction rating.

Also, may want to go get that open recall taken care of. Broken rear toe link is a bad day.
Manufacturer Recall Number20S04

NHTSA Recall Number20V072

 

[Kevin Curley]

I was unaware that any SHOs came with 18 inch wheels. Mine has 20s and that sticker on my car says 35psi.

I don't think they did, I believe that is for a PI with the 3.5 Ecoboost. Probably supposed to be for 18 steelies.

 

[Ecoboost_xsport]

Guilty as charged? I mainly care about the 3.5EB mod/ upgrade aspects of this site more than anything else and most everything else on the web is F150 oriented which I don't care as much about and appears to use a different engine layout than the Taurus SHO platform.

Yes, F150 and SHO 3.5 are actually quite a bit different, not just the layout, though they share some architecture.

 

[Texas Marauder]

No, this is unrelated (or that it really matters at this point) but it's 42 psi cold as indicated on the doorjam not on the tire itself and these tires have a AA traction rating.

That's strange. Yours is an early PI sedan. I believe Ford screwed up with that pressure.
Here is my 2016 PI sedan. Everything is the same except for the max load and the rear spring code.

 

[Ta2dResqr]

That's strange. Yours is an early PI sedan. I believe Ford screwed up with that pressure.
Here is my 2016 PI sedan. Everything is the same except for the max load and the rear spring code.

42 is the highest I can remember seeing on a passenger car ever and I worked in tire shops and as a technician for years. Quite surprised by that number.

 

[Texas Marauder]

42 is the highest I can remember seeing on a passenger car ever and I worked in tire shops and as a technician for years. Quite surprised by that number.

Agreed, 35 is the highest I've seen on a passenger car.

 

[Majestic]

42 is the highest I can remember seeing on a passenger car ever and I worked in tire shops and as a technician for years. Quite surprised by that number.

It doesn't surprise me for a police vehicle. You'd want a "harder" tire for jumping curbs and such.

 

[Ta2dResqr]

It doesn't surprise me for a police vehicle. You'd want a "harder" tire for jumping curbs and such.

At the same time, they are driven to limits. High tire pressure will give you less of a contact patch wearing out the center, and making you prone to things like hydroplaning. The Crown Vic PI adjusted the civilian pressure from 32 to 35. There is a 2016 FPIS picture above. I would be curious to see if anyone else has a 2013 and what theirs reads. Everything I can find online calls for 35 in the FPIS and FPIU.

 

[Majestic]

At the same time, they are driven to limits. High tire pressure will give you less of a contact patch wearing out the center, and making you prone to things like hydroplaning. The Crown Vic PI adjusted the civilian pressure from 32 to 35. There is a 2016 FPIS picture above. I would be curious to see if anyone else has a 2013 and what theirs reads. Everything I can find online calls for 35 in the FPIS and FPIU.

I don't think 7psi is that much higher. That tire is max rated to 52psi so I doubt 42 is going to hurt it. Whether his door tag is some sort of anomaly, I do not know.

 

[ato137528]

never mind. Sorry. Can't seem to delete.