I've got a few spark plug gap gauges like that, but I use a wire gauge these days. the electrodes can erode unevenly so that a flat gauge can show one number, but if the ground electrode is worn more at a point just opposite the center electrode, the gap the spark has to jump is actually more than than a flat gauge indicates. I'll use the flat gauge for new plugs to check them, but a wire gauge for used plugs.So today starting at 10am and finishing at 6pm with an hour ir so for lunch me and my Uncle Rick replaced Sparkplugs , Coil Packs , and injectors. And the camsensor on the drivers bank 2, plus both seals on each bank for the high lift cam oil sensors. In the one pick you will see the O-ring lube. That stuff was amazing. Also cleaned the plenum out with Non non-chlorinated brake cleaner and also cleaned the throttle body out ,and the EGR valve got a very thorough cleaning as well. This was a thorough cleaning. the o-ring lube was also used on the 6 new plenum seals that I also installed. It was a big job . But I was amazed at the increased power and acceleration. Even holding a higher gear on several hills I travel alot so I know this wasnt placebo
In the pics you will several plugs and gap measurements. #6 was the worst and probably where I was getting an occasional rough idle when cold. They ranged in gap from 43-46 .
P.S. shoot out to @WILDHOBO & @Maximus Gladius for some links to the lift solenoid seals and both on several guidance tips.
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I never used the gap check tool to change the gap even 50 years ago. I've got gap tools that have a notch that goes over the side of the ground electrode to bend it and put NO pressure on the center electrode at all.They do not recommend those old school coin gapping tools for iridium plugs to spread the gap as the drag can take the iridium coating off the tips.
Something like this tool is generally recommended to pry up the side electrode without scraping on the center electrode tip.
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I never really understood the desire for those paddles until I took to some steep trails this weekend.I referenced this a little and where I learned about the washers, but otherwise it was straight forward enough that i just went slow and took plenty of pictures along the way to know how to reroute the harness.
I used this to figure out how the air bag connectors
I dont think it is the design of those seals that is the problem they literally were baked hard. The new ones was supple the old ones was stiff hard like they was fried. The sensor seal on the bank one that racket was in the way had to remove the coil pack first then lift it up and turn it around and etc to get past that bracket. The seal was so hardened I had to grab with pliers and pull round and round till it popped out.Wow, you did a lot. Those sensor seals seep oil on both my JL and JT. The JL will get new ones for the second time. Looks like a bad design somehow.
How many miles do you have on yours?
Great pics!
I always have liked them .. but never installed due to I think the radio volume and channel buttons disappear . Think these go in those spots.I never really understood the desire for those paddles until I took to some steep trails this weekend.
Transmission in manual mode, kicked it into 3rd or 4th and let it handle my descents on the other side, but then wanting to adjust to a different gear........ while steering through the washouts and ruts.......... now I think I "get it".
That sort of confirms my wonderings - they got hard with age, heat, oil.I dont think it is the design of those seals that is the problem they literally were baked hard. The new ones was supple the old ones was stiff hard like they was fried. The sensor seal on the bank one that racket was in the way had to remove the coil pack first then lift it up and turn it around and etc to get past that bracket. The seal was so hardened I had to grab with pliers and pull round and round till it popped out.
As crazy as this sounds . The plenum seals although I replaced with new ones . They were crushed down but amazingly they was still soft and wiggly . That rubber for those sensor seals was rubber. Maybe they should consider a type of silicone rubberThat sort of confirms my wonderings - they got hard with age, heat, oil.
I wonder if a different material would work - there are different o-ring materials for different uses. Maybe Jeep needs to consider some other materials.
Still, if I recall, you aren't sitting at 50,000 miles, so............As crazy as this sounds . The plenum seals although I replaced with new ones . They were crushed down but amazingly they was still soft and wiggly . That rubber for those sensor seals was rubber. Maybe they should consider a type of silicone rubber
I ordered Mopar brand so they are unfortunately the same rubber going back in . But both was weeping.
137k+ but I was just impressed at the silicone . That stuff must last forever.Still, if I recall, you aren't sitting at 50,000 miles, so............
Way more thorough than my job. I didn’t do the fuel system at all. But I did it in the winter without a garage, so you may have inspired me to take it apart again. What’s the black tool with the power switch.So today starting at 10am and finishing at 6pm with an hour ir so for lunch me and my Uncle Rick replaced Sparkplugs , Coil Packs , and injectors. And the camsensor on the drivers bank 2, plus both seals on each bank for the high lift cam oil sensors. In the one pick you will see the O-ring lube. That stuff was amazing. Also cleaned the plenum out with Non non-chlorinated brake cleaner and also cleaned the throttle body out ,and the EGR valve got a very thorough cleaning as well. This was a thorough cleaning. the o-ring lube was also used on the 6 new plenum seals that I also installed. It was a big job . But I was amazed at the increased power and acceleration. Even holding a higher gear on several hills I travel alot so I know this wasnt placebo
In the pics you will several plugs and gap measurements. #6 was the worst and probably where I was getting an occasional rough idle when cold. They ranged in gap from 43-46 .
P.S. shoot out to @WILDHOBO & @Maximus Gladius for some links to the lift solenoid seals and both on several guidance tips.
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My seals were leaving way before 50k. I replaced both seals in the 40’s I think and I swear they’re leaking again.Still, if I recall, you aren't sitting at 50,000 miles, so............