I lost the brakes on my D and had it in last week for a look-see. As it turns out, the brake booster went out. Fortunately, they fixed it under the brake recall that I had already had done. They said since there was a recall and I had it done that they would just lump the failure under it and didn't charge me a dime.


Anyways...while I was in there I asked them about the plugs. As it turns out, they suggest changing them every 30K miles. Needless to say, I am over double that, so need to do them. Here is the interesting part, they say 30K b/c they tend to get "stuck in the block". Has anyone heard of or encountered this. I am a DIY guy, but now I'm worried about trying it. Snapping off a plug would SUCK! The fact that there are 16 of them is bad enough, let alone the possibility of having one or more stuck. I'd like to hear from anyone who has changed the plugs in the 5.7...

 

Changed mine at 45k and it was pretty easy. Pretty uneventful really, other than the fact that you're bound to get a bloody knuckle or two getting after 16 plugs.

 

All the ram guys I know say they do them around 75-100k.

 

Yea, bloody knuckles is a given. I'm gonna give it a shot and see what happens. I figure if one is that tuff, I'll just squirt it down with WD-40 and let it sit for a day. Any tips/tricks for getting to the ones in the rear? they look pretty accessible, just curious if any particular ones gave you a fit?

 

30,000 is super early for plugs on a 21st century automobile. What's the manual say? I'd bet it says 100,000

 

They're all fairly easy to get to. One tip - tape your spark plug socket to your extension. Mine would come loose fairly easily, and I did this to ensure that the socket didn't somehow get stuck on the plug after putting in the new one.

 

Stuck is BS.. the plugs in the police chargers are rated for 100k and we can use them. just 4X the price

 

Oddly enough, the manual for 2013 says 30,000 miles for the 8 cyl but 100,000 miles for the 6 cyl. Plugs can stick to the heads. I am having some issues with my '67 GTO, so it is tune up time tomo. I sprayed WD40 on the plugs Sunday and will use an air ratchet to dislodge them. In the humid atmosphere that is Houston, the plugs rust and bond themselves to the heads. I wonder why the diff in intervals for the D engines.....

 

this is really important. the 5.7L spark plug change interval IS roughly 32k miles. the 5.7L HEMI uses copper plugs and copper wears out easy.

the 3.6L uses platinum or iridium plugs (I haven't checked which) and are rated for 100k miles.

it may seem like old technology but its what the 5.7L HEMI is designed for. no, the 5.7L copper plugs do not 'get stuck' in the block. but you will want to change them because the copper wears out so much easier.

I went and bought the Police Package plugs for the 5.7L HEMI. they're pricey. but they're iridium and the have very low resistance (good) and they are rated for 100k miles (even better). a lot of the Jeep Grand Cherokee guys have switched to the Police Package plugs.

I did my own change to offset the extra cost and with the fact that I maybe drive 15k miles a year I may never need to change them again.

 

Good info. I'll look into and buy the police plugs. I imagine buying 16 is gonna hurt. Then again my fun car is a 2008 BMW M3, so it has to be cheaper then that thing. Just oil and filter kit was $120, and that was a deal (most places $160). Stealership wanted $300 for an oil change...NOT! Gonna play...gotta pay...LOL