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E55 Spark Plug Questions And Answers. Experienced opinions/facts needed.
02-05-2013, 02:07 PM
#51
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06 E55 AMG, 13 C63 AMG
I found if you remove the coil pack it gives you more working room to get in there.
If the plugs resist coming out, do not force them. Work slow and spray the penetrating oil into the treads. Use a 1/4 out, 1/8 turn back in. Stop and let the threads cool. There can be a lot of friction and that builds heat and you can easily mess up the threads.
G
If the plugs resist coming out, do not force them. Work slow and spray the penetrating oil into the treads. Use a 1/4 out, 1/8 turn back in. Stop and let the threads cool. There can be a lot of friction and that builds heat and you can easily mess up the threads.
G
02-05-2013, 06:15 PM
#52
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Dirt Scooters
I found if you remove the coil pack it gives you more working room to get in there.
If the plugs resist coming out, do not force them. Work slow and spray the penetrating oil into the treads. Use a 1/4 out, 1/8 turn back in. Stop and let the threads cool. There can be a lot of friction and that builds heat and you can easily mess up the threads.
G
If the plugs resist coming out, do not force them. Work slow and spray the penetrating oil into the treads. Use a 1/4 out, 1/8 turn back in. Stop and let the threads cool. There can be a lot of friction and that builds heat and you can easily mess up the threads.
G
A little extra time and patience could save a lot of money and the hassle it would be if you messed the threads up. I've never heard of anyone messing the threads up but theres always a first.
02-05-2013, 06:49 PM
#53
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06 E55 AMG, 13 C63 AMG
I changed plugs on a 95 Maxima once and it took me 3 days to complete it. Squeek, squeek...
Those plugs tried to weld themselves to the heads. Got it done, damage free.
G
Those plugs tried to weld themselves to the heads. Got it done, damage free.
G
02-08-2013, 02:36 AM
#54
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03 s55
Oh I love em ford 3vs. 3expeditions 3 top overhauls. Plugs didnt break threads just came off clean. I always put a dab of antiseize. Been helping so far. Oh and I never let the plugs stay on for more than a year. Just unscrew a couple turns then retighten.
02-08-2013, 03:31 AM
#55
Lol even better than the 3V were the earlier 5.4 2V supercharged engines from the Lightning and Harley truck. There were like 3 threads of engagement designed into the heads. Owners and techs alike would strip the plugs installing them, and on occasion nearly strip them only later to have the plug(s) shoot out of the head like little missiles.
02-08-2013, 08:40 AM
#56
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Dirt Scooters
Lol even better than the 3V were the earlier 5.4 2V supercharged engines from the Lightning and Harley truck. There were like 3 threads of engagement designed into the heads. Owners and techs alike would strip the plugs installing them, and on occasion nearly strip them only later to have the plug(s) shoot out of the head like little missiles.
I bet i've done a good 20-25 cylinder head jobs on the ford 2v/3v engines before i got out of the business. I have a guy that works for me that stripped 3 cylinders changing plugs on his wifes expedition last night (5.4 3V) so tomorrow i'm going to heli coil them with the repair kit i've got. The E55's have almost to many threads.
02-11-2013, 01:07 PM
#59
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I heard about the plug change on an E55 being tricky. But with the valve covers and all the coils and etc off, I found it VERY easy to do. The only tools I used were a 3/8 ratchet, 3 inch extension, and a 5/8 plug socket. I also used an impact to torque them down. JK JK 
02-11-2013, 01:12 PM
#60
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03 s55
after 2 out of town trips and around 500 miles, my Toyota plugs( yes, my plugs have a Toyota logo on em) seem to be doing nice. Nice burn, goodpower from engine and got a few more miles per gallon.
I do believe that the plugs themeselves dont have much to do with improvements but more on the fact that I just replaced plugs with 100k plus miles on. Main point of my first post was not a copper, iridium, platinum shoot out but more of a cheap plugs can be used without harm thing. 30 dollar plug change is big savings compared to 170 dollars.
I do believe that the plugs themeselves dont have much to do with improvements but more on the fact that I just replaced plugs with 100k plus miles on. Main point of my first post was not a copper, iridium, platinum shoot out but more of a cheap plugs can be used without harm thing. 30 dollar plug change is big savings compared to 170 dollars.
02-11-2013, 01:15 PM
#61
MBWorld Fanatic!
after 2 out of town trips and around 500 miles, my Toyota plugs( yes, my plugs have a Toyota logo on em) seem to be doing nice. Nice burn, goodpower from engine and got a few more miles per gallon.
I do believe that the plugs themeselves dont have much to do with improvements but more on the fact that I just replaced plugs with 100k plus miles on. Main point of my first post was not a copper, iridium, platinum shoot out but more of a cheap plugs can be used without harm thing. 30 dollar plug change is big savings compared to 170 dollars.
I do believe that the plugs themeselves dont have much to do with improvements but more on the fact that I just replaced plugs with 100k plus miles on. Main point of my first post was not a copper, iridium, platinum shoot out but more of a cheap plugs can be used without harm thing. 30 dollar plug change is big savings compared to 170 dollars.
02-18-2013, 10:32 AM
#62
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03 s55
Ive got no idea. I just stuck em in there. I once was obsessive about tiny details. decades back when I looked for power in tiny places. cause all icould afford was the Toyota my father left me.
03-17-2013, 10:31 AM
#63
Junior Member
I remember reading a thread about this question, but I can't find it any more. I know the stock plugs are NGK ILFR6A. I see NGK also offers a plug, LFR6AIX-11, that fits. It is the same heat range as the stocker, but supposedly more high performance? NGK says it's the ultimate in design and performance. 
The LFR6AIX-11 is about $3-4 cheaper per plug. Is there any downside to this plug? I certainly don't mind spending the extra $60 if I'm getting the best plugs, but I don't mind saving the $60 if I can.
The LFR6AIX-11 is about $3-4 cheaper per plug. Is there any downside to this plug? I certainly don't mind spending the extra $60 if I'm getting the best plugs, but I don't mind saving the $60 if I can.
03-17-2013, 11:41 AM
#64
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03 C32 gone, 06 CLS55, 16 Tesla X
I also have question if someone can tell the diff why these two items on eBay are so different in price other then the covers? Is one particular better then the other? Or they are all the same?
And where to get now if it's better price?
Much thank!
http://www.ebay.com/itm/NGK-Iridium-IX-Spark-Plugs-04-12-Subaru-Impreza-STI-Set-of-4-One-Step-Colder-/360563565679?pt=Motors_Car_Truck_Parts_Accessories&hash=item53f343646f&vxp=mtr
And
http://www.ebay.com/itm/LFR7AIX-2309-NGK-Iridium-IX-spark-plugs-set-of-4-/271166629702?pt=Motors_Car_Truck_Parts_Accessories&hash=item3f22ca6746&vxp=mtr
And where to get now if it's better price?
Much thank!
http://www.ebay.com/itm/NGK-Iridium-IX-Spark-Plugs-04-12-Subaru-Impreza-STI-Set-of-4-One-Step-Colder-/360563565679?pt=Motors_Car_Truck_Parts_Accessories&hash=item53f343646f&vxp=mtr
And
http://www.ebay.com/itm/LFR7AIX-2309-NGK-Iridium-IX-spark-plugs-set-of-4-/271166629702?pt=Motors_Car_Truck_Parts_Accessories&hash=item3f22ca6746&vxp=mtr
03-20-2013, 10:03 AM
#65
Junior Member
I remember reading a thread about this question, but I can't find it any more. I know the stock plugs are NGK ILFR6A. I see NGK also offers a plug, LFR6AIX-11, that fits. It is the same heat range as the stocker, but supposedly more high performance? NGK says it's the ultimate in design and performance.
The LFR6AIX-11 is about $3-4 cheaper per plug. Is there any downside to this plug? I certainly don't mind spending the extra $60 if I'm getting the best plugs, but I don't mind saving the $60 if I can.
The LFR6AIX-11 is about $3-4 cheaper per plug. Is there any downside to this plug? I certainly don't mind spending the extra $60 if I'm getting the best plugs, but I don't mind saving the $60 if I can.
03-27-2013, 05:22 PM
#66
I recently replaced all my plugs with the Bosch ones, and now my car idles a little rough. Not sure what happened, or if my car is just really picky.
Going to order replacement ILFR6A plugs and install those. Thankfully since I'm installing headers soon, replacing the plugs as well won't be much additional work.
Going to order replacement ILFR6A plugs and install those. Thankfully since I'm installing headers soon, replacing the plugs as well won't be much additional work.
