2014 5.7L spark plug replacement at 100k

[djhartm]

I knew going in this was going to be a major PITA, and indeed it was. Without the recommended spark plug socket/extension, it would be exponentially more difficult.

Took several hours & was able to get to everything by removing the intake runner & manifold cover.

All 16 sparkplugs looked fantastic; light tan on one side, and clean/white on the other. Been running a HemiFever tune since almost day one, with Stainless Works LT headers. Had to climb ontop of the motor to get the rear two driver side cylinders.

Cleaned the MAF & ported throttle body & installed new NGK Ruthenium plugs.

Starts/idles/runs noticeably smoother.

Was starting to get random misfire codes & cold starts were sometimes a bit rough, but the old plug tips did look quite worn.

Bottom line; a lot of work, but definitely worthwhile.

 

[Marshall]

Now that you are all practiced up , want to pop in and do mine? I still have a while before I am up to 100km, drive would take a while, but I have a nice scotch I can't drink.

 

[QwikKota]

I'm not doing mine until I have some misfire codes or other issues but not sure how that factors in to a lifetime warranty.

 

[Zoe Saldana]

When I did mine the gap was noticeable larger.

You might want to consider putting in new coils also.

I knew going in this was going to be a major PITA, and indeed it was. Without the recommended spark plug socket/extension, it would be exponentially more difficult.

Took several hours & was able to get to everything by removing the intake runner & manifold cover.

All 16 sparkplugs looked fantastic; light tan on one side, and clean/white on the other. Been running a HemiFever tune since almost day one, with Stainless Works LT headers. Had to climb ontop of the motor to get the rear two driver side cylinders.

Cleaned the MAF & ported throttle body & installed new NGK Ruthenium plugs.

Starts/idles/runs noticeably smoother.

Was starting to get random misfire codes & cold starts were sometimes a bit rough, but the old plug tips did look quite worn.

Bottom line; a lot of work, but definitely worthwhile.

 

[Wild one]

If you don't have any misfires,don't replace the coils,if anything you can install new boots and springs.The OEM coils are virtually indestructiable,and out perform all the cheaper aftermarket coils,you gotta spend alot of money on coils before you get to ones that are close to matching the OEM coils. Even the guys running well north of 1000HP run the stock coils.While you're at,check your intake manifold bolts over,they're notorious for losing torque

Coil cleaning pics

Yea i know my picture taking abilities suck,lol Hopefully you guys can tell how i go about cleaning up the coils from the pic's. The first pic,is just a pic of everything disassembled.If your truck has the resistors under the spring in the coil towers,you'll want to remove them and clean them...

www.ramforum.com

Check your intake manifold bolts

This hasn't been talked about for awhile,but check your intake manifold bolts.They call for 108 in-lbs or roughly 9 ft-lbs of torque,and they should be checked at least yearly,as they do loosen up. I've been doing mine at least twice a year on all 3 of of my hemi equipped vehicles.They should be...

www.ramforum.com

If you're really ambitious you can even clean your injectors and check their flow pattern over at home for less then 15 bucks.

Injector cleaning

Supposed to go cold and snow for the next 10 days,so i figured it was a good time to pull the injectors and give them a cleaning.Got them soaking in injector cleaner,where i'll probably leave them for a couple days before using some carb and choke cleaner to wash them out using my old homemade...

www.ramforum.com

 

[jmc921]

Now that you are all practiced up , want to pop in and do mine? I still have a while before I am up to 100km, drive would take a while, but I have a nice scotch I can't drink.

Not sure if you're talking 100,000 Kilometers or 100 k Miles. If it's kilometers, you're only at about 62,000 miles, well short of the 100,000 miles recommended for the plug change. Only thought kilometers since you're posting from Canada.

 

[Marshall]

Yep km, I think it’s at 89 or so,
Wife’s 2008 CRV is less then that.

but my old brain works only in ft, inches, a hair in the shop.
Rain is alway inches, thou around here, its 1/10”, but we did have7/10 last couple days
But the smoke is still bad