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Old 01-27-2015, 03:14 PM   #1
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spark plugs

When is it a good time to switch out the spark plugs? What which ones give the best results?
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Old 01-27-2015, 03:21 PM   #2
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Quote:
Originally Posted by drago02 View Post
When is it a good time to switch out the spark plugs? What which ones give the best results?
When you do your Tune Up. At the very least once a year. I use Auto lite: "HT1". If you have never gotten a Tune up since you've had the Car, then you should get one Right away.
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Old 01-27-2015, 09:29 PM   #3
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Plugs are good for about 100k. I would change them if they are 2 piece plugs. I would not wait for 100k, but not once a year.


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Old 01-27-2015, 09:36 PM   #4
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I change my plugs every year.. and I drive about 18,000 miles a year. Might be overkill but I don't wait till they need to be replaced, to replace them.

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Old 01-28-2015, 12:13 AM   #5
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I just recently changed mine on my 09 at 98k miles. I noticed zero difference in drivability, idle, or mpg.

You can probably ride them out to 90k without and issue.


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Old 01-28-2015, 09:48 AM   #6
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CBIRD did you have to saturate the old spark plugs with solvent for a few hours before trying to remove or did yours come out with no issues? I was thinking about changing mine soon since I'm nearing 100,000. Just curious what was involved with your change since it sounds like you removed your original plugs. And last what plugs did you end up installing and did you gap them?

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Old 01-28-2015, 11:15 AM   #7
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CBIRD did you have to saturate the old spark plugs with solvent for a few hours before trying to remove or did yours come out with no issues? I was thinking about changing mine soon since I'm nearing 100,000. Just curious what was involved with your change since it sounds like you removed your original plugs. And last what plugs did you end up installing and did you gap them?

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My mustang is actually an 09 with the new heads/plugs that use just a normal plug. The 05-early 08's had the "difficult" plugs.

That being said, my install was just like changing the plugs on every other car, nothing special at all. I didn't even had a torque wrench, just went finger tight then turned the wrench a 1/4 turn more. Checked em all out 3 days later and they are all still tight.

The plugs said "gap is non-adjustable" so I didn't gap them. I checked one of them and it was right on the mark so I just left the rest. I trust motorcraft parts, more than what I should probably :p


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Old 01-28-2015, 06:39 PM   #8
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KATO the autolite HT1 spark plugs fit your mustang? I went to O'Rielys last night and they told me those spark plugs are for the F150 and that they didn't match the 09 Mustang GT. Anyone else got tips on a good upgrade on sparkplugs?
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Old 01-29-2015, 12:09 AM   #9
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Well, they do fit my 2007 GT. 4.6L 3V. Unless your Engine is different, then that guy is wrong. Check a different Shop. Even the 2010, had the same Engine, just different Body Style.
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Old 01-29-2015, 08:11 AM   #10
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Well, they do fit my 2007 GT. 4.6L 3V. Unless your Engine is different, then that guy is wrong. Check a different Shop. Even the 2010, had the same Engine, just different Body Style.

08-10 use standard one piece plugs. The heads are different.
You should be more careful before you recommend parts to people.


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Old 01-29-2015, 06:35 PM   #11
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08-10 use standard one piece plugs. The heads are different.
You should be more careful before you recommend parts to people.


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I didn't know that, thanks and I promise You, I will Never ever Recommend a dame thing to anyone again.
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Old 01-29-2015, 07:07 PM   #12
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Don't worry Kato I have an 07 so I found your opinion helpful.

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Old 01-29-2015, 07:11 PM   #13
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Thanks "BPrice", yeah I really did know there was any differences in our Engines until they changed them totally, But smart *** remarks from smart *** people, I don't need. And I can just watch as people on here act like Children.
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Old 01-29-2015, 08:56 PM   #14
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spark plugs

Quote:
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Thanks "BPrice", yeah I really did know there was any differences in our Engines until they changed them totally, But smart *** remarks from smart *** people, I don't need. And I can just watch as people on here act like Children.

My comment wasn't negative at all. I'm sorry if it seemed like I was being short with you or "acting like a child"

You just don't want someone to buy a part (especially electrical parts) that they won't be able to use.
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Old 02-01-2015, 04:23 AM   #15
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Haha funny you mentioned this...I'm in the middle of doing a 4.0l to 4.6l swap and all I've read is horror stories about the 2 piece spark plugs breaking off into the cylinder heads. Click image for larger version

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Luckily I read about this and followed procedures to extract them without breaking. My engine only has 20,000 on it granted this engines been sitting since 2006.
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Old 02-01-2015, 04:25 AM   #16
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Quote:
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KATO the autolite HT1 spark plugs fit your mustang? I went to O'Rielys last night and they told me those spark plugs are for the F150 and that they didn't match the 09 Mustang GT. Anyone else got tips on a good upgrade on sparkplugs?

All the new motorcraft plugs are now one piece. I'm sticking with oem but brisk racing and e3 both make some nice aftermarket ones.
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Old 07-24-2015, 09:04 AM   #17
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motorcraft spark plugs

I just bought a 2008 gt 4.6 3v mustang and wanted to change the plugs not knowing when they were changed last. the 2008 4.6 3v engine made from 2005 to November 30 2008 used the two piece spark plug. the 2008 after November 30 to 2010 4.6 3v engine had different heads installed on the mustangs and take the regular spark plugs. if you look at the engine on the driver side below the spark plugs you will see a AA for the older model and a BB for the newer model or regular spark plug.
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Old 07-24-2015, 09:09 AM   #18
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whats the difference from a pzh1f and a pzh1t spark plug and if I go from a pzh1t to a pzh1f do I have to retune the engine.
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Old 07-24-2015, 08:39 PM   #19
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CBIRD,
Want to help me change mine out?


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Old 07-25-2015, 09:47 AM   #20
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I just replaced my 2007 GT with the Autolite HT1. The car has 37000 miles. All came out with no problems at all. I did soak the plugs with carb cleaner for about 1/2 hour.
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Old 07-26-2015, 10:22 AM   #21
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early 2008 gt spark plugs

just changed the plugs on my early 2008 gt and they came out without a problem. the best info I can give is to use lucas fuel additive for two gas tank full of gas first, seems to loosen the carbon deposits around plugs. then I used the 1/8 to 1/4 turn on the plug to loosen then sprayed a teaspoon of blaster down the plug hole and lit sit for 1 hour. then I slowly backed out the plug some times with a 1/8 turn back and forth to let in more of the blaster. they all came out without a problem. I don't know how long they were in the engine because I just bought the car in February of 2015. the engine had 50000 miles on it and the plugs had only residue of carbon being on it and was soaked with the oil. hope this was clear. I know my kids can't understand me sometimes.lol I bought the plugs from American muscle for 85.00 and ordered the SP514 or PZH1F the ones the ford dealer recommends and charges 23.00 dollars a piece for. the one's I took out werePZT1F or ford racing plugs. so someone changed them from factory one's but I don't know when. the new one's work great.
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Old 07-26-2015, 12:12 PM   #22
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Congrats on getting those out! I am still hesitating on doing them in my 05gt vert. Still need to build up the courage


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Old 07-27-2015, 10:52 AM   #23
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ragtopman

im origionally from buffalo, actually Cheektowaga. moved to Virginia 5 yrs ago. good luck with your plugs. I think the lucas gas treatment helped loosen the carbon buildup around the plugs after two gas tanks full of gas.
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Old 07-28-2015, 12:23 AM   #24
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I'll be changing out my 2008 w/ 20k with Autolite HT1's. The penetrating sprays people use seem to very (carb spray, PB Blaster, I'm using Kano Aerokroil, ...ect) but the basic technique seems to be the same......air gun to clean area around plug boots, spray penetrating oil around plug (not to much as to vapor lock), let penetrating oil sit some length of varying time (overnight for me), gently turn plug 1/4 turn - spray a little more penetrating oil - let sit for awhile - lightly tighten plug back, loosen back 1/4+another 1/4 --- repeat lightly tighten, penetrating spray, loosen a little more than the last time....repeat sequence till you get'r out. Some say no anti-seize anywhere, some say a very small amount just on the plugs smooth shaft just after the plug threads (that's what I'm going to do). Some say if your plug thread area is "black" then add anti-seize to the threads since the "black" threads don't have any anti-seize built into the plug thread compound. ALL say don't get ANY anti-seize close to the plug electrode ! Pretty much ALL say if your going to use anti-seize use the Nickel Anti-Seize version.
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Old 07-28-2015, 12:27 AM   #25
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....IF you do happen to break a plug the go-to removal tool seems to be:
Lisle (LIS65600) Broken Spark Plug Remover for Ford Triton 3 Valve Engines
Amazon.com: Lisle (LIS65600) Broken Spark Plug Remover for Ford Triton 3 Valve Engines: Automotive
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Old 07-28-2015, 06:59 AM   #26
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Great info. Will be trying soon...😬
Eakeddie glad to c someone from buffalo here(or at least was from


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