I just finished changing all 16 plugs and wires in my 08 GC 4.7 (175k miles and first change) Phil’s video helped me a ton!!! Thank you. I wanted to add a few more notes that will hopefully help some. 1. You can order the Bosch plugs online. 2. Need to have the special thin walled socket Phil explained, found mine on Amazon with simple search. 3. O’Reillys auto parts sells a kit that includes 8 new wires AND 8 new boots with springs. You only need the 8 boots for the top plugs. Bottom plugs are just part of the wires. Brand of kit is Ultima Select PN 3364-K3 it’s only $50 total. 4. Phil is right it’s not easy to get the coils out but I only had 3 of my boots tear. His tip on using a screw driver and cracking the spark plug worked perfect and is very easy. It helps to have a needle nose with a 90 deg bend to help get the cracked boot out of the hole. 5. I was able to get by with basic 3/8 extensions and a few swivel heads. A few of the positions both top and bottom are not easy to get to but possible with a little effort. On a few needed to get the socket on first then attach the swivel due to space. 6. Need to remove the air cleaner cover and battery. I was also changing the alternator so that hole helped as well but not a must do. 7. Some of the plugs took some real effort to get them to start turning. I used a pipe over the 3/8 driver to help create some leverage. They will come out. 8. I also used some thread grease made for plug threads and boot grease to help with install. 9. Use a marker and number your coils before you take any out. The car runs great now. The RPM is lower and the gas mileage increased a ton. Well worth the effort. Reply with any questions and I will help best I can. Thanks again to Phil for this video he was spot on.
I just got done doing this, took about 4 hours total including smoke breaks, finding tools, and talking to GF on the phone. As limited access jobs go, this is pretty easy. No jacking the engine, removing compressors, etc. Just pull the battery and tray. I am a former master mechanic, so I have alot of tools. I was in no rush and took my time. A standard Snap On 5/8" spark plug socket fit fine, so any "real" professional tool should as well. I used a swivel socket and 3" extension for all of the exhaust plugs, I added a 1" wobble to the extension for 2 of the plugs on the right side. Be warned, swivel spark plug sockets in the hand of the inexperienced can be a recipe for broken plugs, make sure the swivel is not winding up, and support the head of the ratchet with your off hand. I suggest fully warming the engine before you start, it will help the boots come off. The only boot I tore was on the last cylinder (front right), and the engine was pretty cool by then. I also strongly suggest using a screw driver to break the plug as an absolute last resort. I just used a long skinny screw driver and worked it down around the plug, it seemed to be as much stuck to the engine as the plug. Took maybe 5 minutes to get it free. as a rule, aftermarket wires are inferior to factory wires, save the old ones if possible unless they are just really old and the spring is turning green.
I have 155K... suppose I should get on this! Thanks for all the part numbers, they all got written down. If I may make a suggestion, can you use a dry erase board instead of paper? I couldn’t read the paper and had to rewind the video 18 times to hear you repeat the numbers. Dry erase board would be larger and not moving around. Thanks again for the info!
I just wanted to say a heartfelt thank you for making this video. Everything you need to know is in it. BTW boschsparkplugs.net has insane shipping costs. I was able to source the plugs from various places, and ultimately went with Amazon. The plugs cost a tad bit more, but was more than offset by shipping costs. For the Boots, I followed D Carver's advice and purchased a kit for $50ish from O'Reillys
Awesome I'm getting close to redoing my plugs, I'm glad I found this video it was the most informative one I have found so far! Did you get better mpg after you changed your plugs?
I have a 2008 JGC 4.7 gen2 with 73000 miles on it. I don't know if plugs have ever been changed. Question is what was the mileage when you fellows changed yours. Anyone have threads strip or pull out or plug break off.
I stumbled on this vid on how to get this working as I have been noticing really rough idling on my '08 JGC. I have been going to wkjeeps.com as my reference when I owned my '92 WJ. If you're an owner of any JCG, I recommend you visit the site--great info there. Thank you Phil (and everyone else in the comments) for researching these specific plugs. I just ordered my sets so I can get them replaced.
I have not! seen any body remove the lower (exhaust side) spark plugs. Lets see it! I dont think its ever been filmed. Plugs you can get by order. stick with Bosch. Replace wires if near 100k.
I'm changing my plugs to the iridium plugs. I also used lots of dielectric grease. I tried a socket that was very thin-walled but i0t was getting stuck. Just checked Amazom for socket www.amazon.com/CruzTOOLS-SP58-4-Long-Spark-Socket/dp/B005U80B5G (they are out of stock as of 06 June 21).
I just finished changing all 16 plugs and wires in my 08 GC 4.7 (175k miles and first change)
Phil’s video helped me a ton!!! Thank you. I wanted to add a few more notes that will hopefully help some.
1. You can order the Bosch plugs online.
2. Need to have the special thin walled socket Phil explained, found mine on Amazon with simple search.
3. O’Reillys auto parts sells a kit that includes 8 new wires AND 8 new boots with springs. You only need the 8 boots for the top plugs. Bottom plugs are just part of the wires. Brand of kit is Ultima Select PN 3364-K3 it’s only $50 total.
4. Phil is right it’s not easy to get the coils out but I only had 3 of my boots tear. His tip on using a screw driver and cracking the spark plug worked perfect and is very easy. It helps to have a needle nose with a 90 deg bend to help get the cracked boot out of the hole.
5. I was able to get by with basic 3/8 extensions and a few swivel heads. A few of the positions both top and bottom are not easy to get to but possible with a little effort. On a few needed to get the socket on first then attach the swivel due to space.
6. Need to remove the air cleaner cover and battery. I was also changing the alternator so that hole helped as well but not a must do.
7. Some of the plugs took some real effort to get them to start turning. I used a pipe over the 3/8 driver to help create some leverage. They will come out.
8. I also used some thread grease made for plug threads and boot grease to help with install.
9. Use a marker and number your coils before you take any out.
The car runs great now. The RPM is lower and the gas mileage increased a ton. Well worth the effort.
Reply with any questions and I will help best I can.
Thanks again to Phil for this video he was spot on.
where are the bottom 8 located?
Ray Rivas follow the connector coming off of the coil that goes below the intake, it leads you right to the other plugs.
@@adamlandy7253 Thank you!
Just an FYI, Rockauto.com has the Bosch plugs. FR8TE2 are $3.24 each and the FR8T1332 are $5.67 each. $72 plus shipping, which is $6-$10
I just got done doing this, took about 4 hours total including smoke breaks, finding tools, and talking to GF on the phone.
As limited access jobs go, this is pretty easy. No jacking the engine, removing compressors, etc. Just pull the battery and tray.
I am a former master mechanic, so I have alot of tools. I was in no rush and took my time.
A standard Snap On 5/8" spark plug socket fit fine, so any "real" professional tool should as well. I used a swivel socket and 3" extension for all of the exhaust plugs, I added a 1" wobble to the extension for 2 of the plugs on the right side.
Be warned, swivel spark plug sockets in the hand of the inexperienced can be a recipe for broken plugs, make sure the swivel is not winding up, and support the head of the ratchet with your off hand.
I suggest fully warming the engine before you start, it will help the boots come off. The only boot I tore was on the last cylinder (front right), and the engine was pretty cool by then. I also strongly suggest using a screw driver to break the plug as an absolute last resort. I just used a long skinny screw driver and worked it down around the plug, it seemed to be as much stuck to the engine as the plug. Took maybe 5 minutes to get it free. as a rule, aftermarket wires are inferior to factory wires, save the old ones if possible unless they are just really old and the spring is turning green.
Thank you for the video. I'm glad I saw this before I started my project.
Great video. My local mechanic has done these and will do it for $300, I think I'll just pay him.
That’s a lot, why do people charge so much on simple things that’s like 175$ for me to do it. Maybe to pay rent?
Phil, you're a hero! Thanks for this!
I have 155K... suppose I should get on this! Thanks for all the part numbers, they all got written down. If I may make a suggestion, can you use a dry erase board instead of paper? I couldn’t read the paper and had to rewind the video 18 times to hear you repeat the numbers. Dry erase board would be larger and not moving around. Thanks again for the info!
Thanks for the comment, I will use an erase board next time.
Nice work
Thanks! Love videos like this.
I just wanted to say a heartfelt thank you for making this video.
Everything you need to know is in it.
BTW
boschsparkplugs.net has insane shipping costs.
I was able to source the plugs from various places, and ultimately went with Amazon. The plugs cost a tad bit more, but was more than offset by shipping costs.
For the Boots, I followed D Carver's advice and purchased a kit for $50ish from O'Reillys
love it.
Is all the 16 plugs are the same?
Was your jeep a flex fuel version?
Ty!!!
Awesome I'm getting close to redoing my plugs, I'm glad I found this video it was the most informative one I have found so far! Did you get better mpg after you changed your plugs?
I have a 2008 JGC 4.7 gen2 with 73000 miles on it. I don't know if plugs have ever been changed. Question is what was the mileage when you fellows changed yours. Anyone have threads strip or pull out or plug break off.
I had 100k on my jeep. That is when Jeep recommends the plugs to be changed.
Phil Engelskirger
Thanks!
I stumbled on this vid on how to get this working as I have been noticing really rough idling on my '08 JGC. I have been going to wkjeeps.com as my reference when I owned my '92 WJ. If you're an owner of any JCG, I recommend you visit the site--great info there.
Thank you Phil (and everyone else in the comments) for researching these specific plugs. I just ordered my sets so I can get them replaced.
I have not! seen any body remove the lower (exhaust side) spark plugs. Lets see it! I dont think its ever been filmed. Plugs you can get by order. stick with Bosch. Replace wires if near 100k.
I know its been awhile, but ever find a vid?
I'm changing my plugs to the iridium plugs. I also used lots of dielectric grease. I tried a socket that was very thin-walled but i0t was getting stuck. Just checked Amazom for socket www.amazon.com/CruzTOOLS-SP58-4-Long-Spark-Socket/dp/B005U80B5G (they are out of stock as of 06 June 21).
just saw I guess I'll have to take to the dealer smh