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Spark plugs removal

Tiny
PATRIC125
  • MEMBER
  • 4 POSTS
  • 2002 HYUNDAI SONATA
  • 2.4L
  • 4 CYL
  • 2WD
  • AUTOMATIC
  • 144,000 MILES
My car was running rough a while ago, took it to AutoZone, they said spark plug number two was the problem, changed it, ran fine.

This problem is now about a year after the first one. I took it to AutoZone to have check engine light looked at and they said they updated their software and no longer have 2002 models on it. So I do not have a code.

So, we changed all spark plugs, number two had oil on it. The car still runs rough and something is wrong. What do you think is wrong and would you have an estimate for the fix? I have an appointment at a repair place near me next week to have them diagnose it. Just wondering if I will have a really big bill.

Thanks for any information you can give.
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Friday, November 27th, 2020 AT 5:44 PM (Merged)
Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
Good evening.

The oil may be from the valve cover gasket leaking into the tube for the plug. There is a seal there that is common for leaking. The oil shows up on the plug when you remove it as you bring it through the oil on the way out.

As far as the code, there is no reason why they cannot read the code. That was inaccurate information. You can go to another parts store and they can read it for you.

As far as the miss, the first thing I hope the shop will do is a compression test to be sure there is no issue with the cylinder. That is important. If there is an issue, then work will need to be done.

Once the diagnostic is done, get a written estimate before doing anything. Then get back to us with the estimate and we can go over it with you to determine the costs in parts and labor are in line.

Roy
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Friday, November 27th, 2020 AT 5:44 PM (Merged)
Tiny
PATRIC125
  • MEMBER
  • 4 POSTS
Thank you. Your answer is very helpful. I will get back to you. I have an appointment on Monday.
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Friday, November 27th, 2020 AT 5:44 PM (Merged)
Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
Let me know if you need anything else.
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Friday, November 27th, 2020 AT 5:44 PM (Merged)
Tiny
PATRIC125
  • MEMBER
  • 4 POSTS
Hi - I took my car to the neighborhood garage and they said cylinder two needs a coil $59.37 plus $80 labor = $139.37
Valve cover gasket $79.19 plus $80 labor = $159.19
shop supplies 8.95
Tax 21.52
Total $329.03
I told them I would let them know tomorrow morning.
Thanks for all your help. I certainly appreciate your knowledge.

Patricia Sunders
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Friday, November 27th, 2020 AT 5:44 PM (Merged)
Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
Okay, valve cover gasket and labor is good price. The coil part is okay for price.

The issue I have is they are charging you $80.00 to replace a coil that takes five minutes to replace. The other thing is they have to remove it for the valve cover replacement.

Tell them they need to remove the labor for the coil since they are removing it anyway for the valve cover gasket replacement.

Roy
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Friday, November 27th, 2020 AT 5:44 PM (Merged)
Tiny
PATRIC125
  • MEMBER
  • 4 POSTS
Thank you for your help. Patricia Sunders
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Friday, November 27th, 2020 AT 5:44 PM (Merged)
Tiny
DAVE1310
  • MEMBER
  • 64 POSTS
  • 2002 HYUNDAI SONATA
My question is if there is oil on the spark plug boot in the spark plug tube, but the spark plug is dry and I just replaced the valve cover gasket, would a CEL go off if there is oil in the cylinder? Driveability and smooth operation is very good, wouldn't a random mis-fire cause rough idle and poor drivability as well as a CEL?
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Friday, November 27th, 2020 AT 5:44 PM (Merged)
Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
If there is enough oil to short out plug then it would set a code if not it won'tif there are O-rings around the spark plug tube then it could get oil into the spark plug boot area if they were missing or didn't seal because of being old.
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Friday, November 27th, 2020 AT 5:44 PM (Merged)
Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
You are welcome. We are glad to help.
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Friday, November 27th, 2020 AT 5:44 PM (Merged)
Tiny
SNEETA98
  • MEMBER
  • 2 POSTS
  • 2001 HYUNDAI SONATA
2001 Hyundai Sonata Front Wheel Drive Automatic

when I took out the spark plugs where 2 of the plugs were there was water or some other fluid in the area what could that be.
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Friday, November 27th, 2020 AT 5:44 PM (Merged)
Tiny
KHLOW2008
  • MECHANIC
  • 41,814 POSTS
Hi sneeta98,

If it is water, then it could have been splashed on, nothing to worry about, just dry it up.

If it is oil, then the valve cover gasket needs some attention.
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Friday, November 27th, 2020 AT 5:44 PM (Merged)
Tiny
LENNY KEARNS
  • MEMBER
  • 1 POST
  • 2000 HYUNDAI SONATA
  • 6 CYL
  • FWD
  • AUTOMATIC
  • 150,000 MILES
What would be the easiest and most economical way to change the spark plugs on 2000 hyundai sonata v6? In order to change the three rear plugs can the manifold be raised without disturbing anything else and with out messing up the gasket?
What is the best way to approach this?
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Friday, November 27th, 2020 AT 5:45 PM (Merged)
Tiny
ERNEST CLARK
  • MECHANIC
  • 1,730 POSTS
Yes, the easiest way to get to the plugs is by removing the upper intake (called an air surge tank). However, you can NOT reuse the gasket. Also, take pictures of everything before removal so you can see how things go back. Here's the procedure for removal:

AIR INTAKE SURGE TANK
REMOVAL

1. Remove the air intake hose connected to the throttle body.

2. Remove the accelerator and cruise control cables.
3. Remove the engine coolant hose.

4. Remove the P.C.V. Hose and brake booster vacuum hoses.
5. Disconnect the vacuum hose connections.
6. Remove the ISA, TIPS and ATS connector.
7. Remove the surge tank stay.
8. Remove the air intake surge tank and surge tank gasket.
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Friday, November 27th, 2020 AT 5:45 PM (Merged)
Tiny
MHPAUTOS
  • MECHANIC
  • 31,937 POSTS
I would not refer this as a surge tank, this is more in line with a radiator surge tank, correct reference is a inlet plenum chamber or even just an inlet manifold, I do agree that taking a few pics or making notes as you go along is a big advantage, I still do this with something I have never work on and I have been doing this for 37 odd years.

Mark (mhpautos)
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Friday, November 27th, 2020 AT 5:45 PM (Merged)
Tiny
PAGANIAM
  • MEMBER
  • 1 POST
  • 1998 HYUNDAI SONATA
  • 4 CYL
  • FWD
  • AUTOMATIC
  • 13,800 MILES
Could someone please tell me how to remove the plugs and wires for my 1998 hyundai sonata
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Friday, November 27th, 2020 AT 5:45 PM (Merged)
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,921 POSTS
TO remove the wires, just twist and pull. Using a spark plug socket, unbolt the plug, remove it, and replace the new one after you make sure the gap is correct. Make sure to do this one at a time so you don't mix up the spark plug wires. They must stay in the same order.
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Friday, November 27th, 2020 AT 5:45 PM (Merged)

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