|Topic Review (Newest First)|
|06-18-2018 01:30 PM|
Originally Posted by sheila View Post
|06-18-2018 12:36 PM|
|sheila||Does the "SP" stand for single platinum, lol?|
|06-18-2018 12:04 PM|
|blueberry||There seems to be confusion about whether SP-432 are single or double platinum. O'Reilly's says SP-432 are double platinum while Advance Auto and Autozone say they are single. I've also seen both ways stated a few other places including on here. I am tending to think SP-432 are single platinum, but can anyone say for sure?|
|06-17-2018 09:03 AM|
Originally Posted by tonybowers View Post
If plug gap within reason matters, then you have other weakness in the engine.
|06-16-2018 08:29 PM|
|tonybowers||one thing i have learned is never assume new plugs are gaped correctly. always check them.|
|06-14-2018 10:42 AM|
I happened to find that on my single coil pack, 2002 Duratec DOHC engine, I should be using a double platinum plug, (where both the center electrode and the ground strap, both have a platinum surface), this is because of the way that the coil is set up. I worked for the city and found that there was a TCB from Ford on this for the Crown Vic police cars that I was working on. The set up for my model year Taurus is the same, but with two less cylinders, obviously. Some of the plugs,(actually half), fire from the ground strap to the center electrode, (opposite of the way that a conventional plug fires).
I couldn't get a double platinum plug with Motorcraft branding at the time, for some odd reason. I understand that they are now being offered. I settled with Autolite double platinums, but there's other brands, too. The reason for the requirement is electrode erosion on the negative or ground strap if it's not platinum. You'll end up with plug failure at a more frequent rate. Sure enough, it happened to me. I started getting misfire codes after about 30K miles with the single electrode plugs that were installed by the factory. I bought my Taurus new, BTW.
I installed double plats. and haven't had a problem since. I try to replace them at the required service interval, but it's is a job getting to those plugs with the Duratec engine. This plug requirement won't be an issue with the coil on plug set-up on some of the newer cars, just the older Taurus' with the separate single coil pack. The Vulcan engine cars with the single coil has the same issue. BTW, I also suffered coil failure with the single platinum plugs.
I see that there has been previous replies with this confirming info. I didn't realize that the issue had already been addressed.
|07-19-2015 01:57 PM|
SP-432 is not dual platinum, just fire wire platinum... It's perfect for Coil On Plug, but for DIS will have ground erosion, like I showed in the other thread. So, DOHC or not... less important. It mostly depends of ignition system type (manufacture year).
|07-19-2015 01:18 PM|
Originally Posted by unit731 View Post
432 is double platinum fine wire = premium
About ~$0.90 per plug.
Whatever you want to spend.
|07-19-2015 12:05 PM|
Originally Posted by SoNic67 View Post
And I found
I'm just attempting to find out what spark plug came with the "U" engine in 2002.
And I found this link from TCCA
|07-19-2015 11:33 AM|
I see now. It is produced and marketed by:
UCI-FRAM AutoBrands - Home
Part of Rank Group (New Zeeland):
Sold in 2011:
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