3.3L engine. How do you access the 3 rear spark plugs ? - Kia Forum
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post #1 of 13 (permalink) Old 07-11-2019, 07:41 PM Thread Starter
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3.3L engine. How do you access the 3 rear spark plugs ?

Being a little curious, I popped off the engine cover to see if any mice have been setting up residence there.

So, I could plainly see the 3 front coils for the front spark plugs, but it looks like the intake manifold had to be removed to gain access to the 3 rear plugs. Is this correct, or am I missing something here ?

It will be a while before I need a plug change, but would like to know how to get at the rear 3 plugs.

Thanks.

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post #2 of 13 (permalink) Old 07-12-2019, 06:18 AM
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That's correct. You have to remove the intake manifold and the throttle body.
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post #3 of 13 (permalink) Old 07-12-2019, 07:14 AM
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That's why I hesitated to buy 6 cylinder as DIYer. I replaced plugs in Rav4 V6 once and that was PITA. I thought Toyota or Lexus dealer or even indy shops charges around $500 for service.
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post #4 of 13 (permalink) Old 07-12-2019, 10:24 AM
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There is at least on youtube video out there about removing the manifold and changing the backside plugs. It's not complicated, just have to be careful, have new gaskets on hand for anything removed (like the throttle body gasket). I don't know what the dealership charges but would imagine at least $300 and quite possibly more.
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post #5 of 13 (permalink) Old 07-12-2019, 11:15 AM
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As just noted in another thread, unless something really unusual happens, it's unlikely that you will even want to LOOK at those plugs until you hit 100K miles. The combination of these iridium plugs and today's top tier gas is pretty amazing. If you get the itch to do something at 100K, just take a peek at the easy to access front plugs before you buy a new set. When I pulled the front 3.3 plugs on my old Santa Fe at 100K (same PITA intake removal job), it reminded me of the 100K plugs on my old 300M. Clean as a whistle and with good looking gaps. On the 300M, I'd already purchased the plugs, and they were super easy to swap (all right on top under the coil packs), or I wouldn't have bothered after looking at them.
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post #6 of 13 (permalink) Old 07-12-2019, 12:09 PM
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IIRC, the 'book time' on R&R for the 6 3.3L plugs is just over 3-1/2 hours. Figure shop rate at around $100/hr, and you're into a big chunk of change.
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post #7 of 13 (permalink) Old 07-12-2019, 12:45 PM
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Just curious... coil packs covered by 10 yr power train warranty?
If engine detects misfire, mostly plug or coil pack is problem.
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post #8 of 13 (permalink) Old 07-12-2019, 03:35 PM
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No. That's strictly a 5/60 item. They deal in mechanical parts for the 10/100.

https://www.kia.com/us/k3/content/me...6_warranty.pdf

• Power Train Coverage
For Original Owners (defined below), the Power
Train Limited Warranty begins upon expiration of the
60 month/60,000 mile Basic Limited Warranty
Coverage, and will continue to cover the following
components up to 120 months or 100,000 miles from
the Date of First Service, whichever comes first. It
does not cover normal wear and tear, maintenance, or
those items excluded elsewhere in this manual. See
“Exceptions” and “What is Not Covered.”
The items covered by the Power Train Limited
Warranty include:

- In the Engine: Cylinder block, cylinder head and
all internal parts, timing gear, seals and gaskets,
valve cover, flywheel, oil pump, water pump and
turbo charger.

- In the Transaxle: Transmission case and all
internal parts, torque converter, drive shafts,
universal joints, front hubs, bearings, seals and
gaskets.

- In the Axles: Axle shafts and C-V joints
(couplings), seals, hub and wheel bearings.

- In the Transmission: Transmission case, transfer
case, torque converter and all internal parts, seals,
and gaskets.

- In the Differentials: Front and rear differential
assemblies, cases, all internal parts, seals and
gaskets.

- In the Propeller Shafts: Drive shafts, universal
joints.
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post #9 of 13 (permalink) Old 07-12-2019, 06:53 PM Thread Starter
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I'll have to check out the YouTube video.

Sounds like fun.

I'll look at the front plugs at 50K miles and see what they look like.
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post #10 of 13 (permalink) Old 07-13-2019, 12:07 AM
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Especially when re-installing plugs, take the time to do it right and use a torque wrench.
For the 3.3L, Kia specs 11~18 ft lbs. For a reinstalled plug, I'd stay on the high side with about 16 ft-lbs, not the low side.
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