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Who's experienced fouled spark plugs on their Kia Stinger?

Who's experienced fouled spark plugs on their Kia Stinger?

  • Yes with a chip

    Votes: 8 21.1%
  • Yes without a chip

    Votes: 2 5.3%
  • No with a chip

    Votes: 6 15.8%
  • No without a chip

    Votes: 22 57.9%

  • Total voters
    38
Messages
129
Reactions
14
State
Non-US
Country
Canada
What I Drive
2011 Acura MDX
#1
Lets get to the bottom of this whole spark plug issue/debate and see who has experienced fouled plugs on their Kia Stinger?

These are pictures of fouled plugs shared by [MENTION=46]STINGER[/MENTION] on his Stinger GT with a Lap3 chip.

 

ATXStinger

500 Posts Achieved
Messages
928
Reactions
79
State
TX
Country
United States
#2
The results are pretty interesting to see so far.
 
Messages
347
Reactions
166
State
NC
Country
United States
#3
Very interesting. Of 7 chipped cars 3 have had issues.

That's way too prevalent for me.
 
Messages
102
Reactions
38
State
TX
Country
United States
#4
For better clarity should have added separate entries between the 2.0L and 3.3L.
 
Messages
420
Reactions
43
State
LA
Country
United States
What I Drive
2010 Kia Forte
#5
I wonder how many of these issues are related to having the wrong octane setting or some other underlying problem.
 
Messages
151
Reactions
24
State
WA
Country
United States
What I Drive
2018 Kia Stinger
#6
Very interesting. Of 7 chipped cars 3 have had issues.

That's way too prevalent for me.
Are these results based strictly on Lap3 or other tuners?
 

StingerMike

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Staff Member
Messages
726
Reactions
76
State
MI
Country
United States
#8
Here's a picture of a cracked NGK plug on another member's car running the chip.




Evidently this one was a brand new plug that was replaced in cylinder 5 which also cracked. Right now, the tech believes it's a bad coil and waiting on the replacement part.
 
Messages
386
Reactions
53
State
IL
Country
United States
What I Drive
2018 Kia Stinger GT1
#9
Was that cracked from misfire or excessive heat?
 

Kazz

500 Posts Achieved
Messages
507
Reactions
138
State
IL
Country
United States
What I Drive
2018 Micro Blue Stinger GT2 AWD
#10
I'd say something's increasing the ignition temp. My guess is that the car is trying to compensate for what the chip is telling it until it blows the plug and/or coil. I would guess that, if Kia sees enough of this issue, they'll put limits on how hot the coils can get. This is all speculation, of course.
 
Messages
449
Reactions
78
State
MO
Country
United States
What I Drive
'05 Pontiac GTO
#11
Could also be a run of defective plugs, although if it's the same cylinder the coil might be a better bet. Strange .... I don't have my car yet to look it over, but how many coils? Usually one coil for each cylinder pair but I haven't seen the 3.3T yet.
 

StingerMike

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Messages
726
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76
State
MI
Country
United States
#12
Was that cracked from misfire or excessive heat?
From what I gathered its due to misfire from a bad coil. The tech still doesn't know what caused the coil to go bad.
 

StingerMike

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Staff Member
Messages
726
Reactions
76
State
MI
Country
United States
#13
Could also be a run of defective plugs, although if it's the same cylinder the coil might be a better bet. Strange .... I don't have my car yet to look it over, but how many coils? Usually one coil for each cylinder pair but I haven't seen the 3.3T yet.
One on each cylinder.
 
Messages
322
Reactions
34
State
FL
Country
United States
#14
Great stuff, I'm going to hold off on any chip purchases until we find out what's causing plugs to go bad.
 
Messages
449
Reactions
78
State
MO
Country
United States
What I Drive
'05 Pontiac GTO
#15
One on each cylinder.
Thanks, [MENTION=8]StingerMike[/MENTION]. Still doesn't explain why a mis-fire causes a cracked plug. Heat is dissipated by mechanical contact of threads against the cylinder head. Usually you will see a crack or path along a carbon track but that usually fries the coil, not the plug. I wonder if there is an access problem that causes the mechanic to crack the plug on installation due to a misalignment of the socket. Guess I'll shut up until I get my engine and can look it over.
 
Messages
111
Reactions
9
State
NM
Country
United States
What I Drive
2018 Stinger gt
#16
From what I can tell after I remove the plug it look like yhe coil was bad and causing the crack on the plug. Grounding out to the cylinder head and back to the plug. I'm just waiting for the new coil and plugs to come in. Kia have seen this problem already.
 

SeoulStinger

500 Posts Achieved
Messages
538
Reactions
41
State
CA
Country
United States
What I Drive
2015 Audi A6
#17
From what I can tell after I remove the plug it look like yhe coil was bad and causing the crack on the plug. Grounding out to the cylinder head and back to the plug. I'm just waiting for the new coil and plugs to come in. Kia have seen this problem already.
What's the ETA on the new coil from Kia?
 
Messages
347
Reactions
166
State
NC
Country
United States
#18
So, a consensus of 23 owners say if you don't chip the car you're fine. If you do chip the car you have a 50% chance of having issues.

I'd like to see this poll on the other forum to get a bigger sample size.
 
Messages
111
Reactions
9
State
NM
Country
United States
What I Drive
2018 Stinger gt
#19
I don't have an eta for the coil.
 


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