Spark plugs

Tiny
TJONES1980
  • MEMBER
  • 2007 CHEVROLET IMPALA
  • 6 CYL
  • FWD
  • AUTOMATIC
  • 67,000 MILES
How often should I change my spark plugs? And is it o.K. To use performance spark plugs? I need to change the spark plugs?
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Thursday, March 25th, 2010 AT 4:18 PM

25 Replies

Tiny
RHALL77
  • MEMBER
Your plugs in that car should be good for 60,000 miles. as for performance plugs, i would suggest using what the factory calls for. Here is a guide to help walk you through the job with diagrams below to show you how on your car.

https://www.2carpros.com/articles/how-to-change-spark-plugs

1.02 mm (0.040 in) gap

Spark Plug Type .................... GM P/N 12591131 (AC Delco #41-100)

https://www.amazon.com/gp/product/B000IZ3MPC/ref=as_li_qf_asin_il_tl?ie=UTF8&tag=2carprcom-20&creative=9325&linkCode=as2&creativeASIN=B000IZ3MPC&linkId=7cfb46aea11c8ba2f5a7d391aa5e698d

Check out the diagrams (Below). Please let us know if you need anything else to get the problem fixed.
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Friday, March 26th, 2010 AT 8:56 AM
Tiny
TOM_G
  • MEMBER
  • 2005 CHEVROLET IMPALA
  • 103,500 MILES
Not much clearance to get at the rear spark plugs
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Thursday, December 5th, 2019 AT 12:24 PM (Merged)
Tiny
SATURNTECH9
  • MEMBER
Remove the two top motor mounts (Dog bones )then get a ratcheting tie down to tilt the engine forward. Then remover the plugs and out them back in, still tight but at least theres some room
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Thursday, December 5th, 2019 AT 12:24 PM (Merged)
Tiny
2CARPROS-ARCHIVES
  • MEMBER
  • 2004 CHEVROLET IMPALA
I just changed the spark plug and wires and now my car is making a tickin noise and had the smell of rotten eggs
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Thursday, December 5th, 2019 AT 12:24 PM (Merged)
Tiny
MHPAUTOS
  • EXPERT
Check leads are fitted correctly and pushed all the way home, have you just got any fuel? At night go out and start engine and lift bonnet, watch for any ignition spark arcing to earth.
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Thursday, December 5th, 2019 AT 12:24 PM (Merged)
Tiny
EVELYN LORENCES
  • MEMBER
  • 2004 CHEVROLET IMPALA
  • 178,000 MILES
I have a chevy Impala 2004 and it takes a very long time to start and it sound like it's clogged and then when I finally get it to turn on it makes really weird noises and when I come to a complete stop or when I'm slowing down the car completely shuts off. We changed the coil wires and we changed the spark plugs and the box that the coil wires plugged into but I guess that was not it because it's still makes the same noise and it takes forever to start and when it does it shut off. Can u please help
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Thursday, December 5th, 2019 AT 12:24 PM (Merged)
Tiny
STEVE W.
  • EXPERT
The description sounds like it could be almost anything. From a plugged exhaust system, bad fuel pump, bad fuel regulator, EGR stuck open, purge solenoid stuck open and more. It needs to go to a shop and have it actually scanned and some diagnostic tests performed. The other option is to spend a bunch of money swapping parts until you get lucky or go broke.

You didn't post which engine you have so that also hinders the process.
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Thursday, December 5th, 2019 AT 12:24 PM (Merged)
Tiny
MAXIMTHEHERO
  • MEMBER
  • 2004 CHEVROLET IMPALA
Engine Mechanical problem
2004 Chevy Impala 6 cyl Front Wheel Drive Automatic

I can't find what the spark plug gap for my car is and I need to replace the plugs. Can you help?
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Thursday, December 5th, 2019 AT 12:24 PM (Merged)
Tiny
RHALL77
  • MEMBER
0.060 Here is a guide to help you see what you are in for when doing the job.

https://www.2carpros.com/articles/how-to-change-spark-plugs

Please let us know if you need anything else to get the problem fixed.

Cheers
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Thursday, December 5th, 2019 AT 12:24 PM (Merged)
Tiny
SHORTYMD
  • MEMBER
  • 2003 CHEVROLET IMPALA
  • 6 CYL
  • FWD
  • AUTOMATIC
  • 118,000 MILES
3400 motor. I was having a misfire on cylinder 4 so I went to change the plugs and wires. Plug 4 was covered in oil and gas when pulled. I replaced the plugs and the car was still misfiring. I pulled plug 4 again within 10 minutes and it was covered in oil again. It appears to be getting spark to it. What could it be?
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Thursday, December 5th, 2019 AT 12:24 PM (Merged)
Tiny
BLACKOP555
  • EXPERT
Chances are your valve seals for that cylinder is cracked, if that isnt it then you will probably need new piston rings.
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Thursday, December 5th, 2019 AT 12:24 PM (Merged)
Tiny
SADAT_04
  • MEMBER
  • CHEVROLET IMPALA
I recently changed the spark plugs and the wires. After the change, car starts but the rpm falls and the engine idles. No matter how many times I try, it always starts just fine but it does not stay up. I thought the spark plugs were bad since I got genuine subaru wires but NGK laser iridium plugs. I switched the plugs with Bosch platinum and still doing the same thing. One thing I did notice that when I was taking the plugs out, couple of the spark plugs had quite a bit of engine oil in it. I cleaned the plug holes a bit. Could anyone please help. Ask me any question. Thanks.
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Thursday, December 5th, 2019 AT 12:24 PM (Merged)
Tiny
JACK42
  • EXPERT
Are you sure the wires are on the correct posts on the cap. You might have retarded the firing order
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Thursday, December 5th, 2019 AT 12:24 PM (Merged)
Tiny
WRX246
  • MEMBER
IT possibly is the air flow meter & the o2 sensor & the idle control valve it, may pay to get these checked.
Thanks :)
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Thursday, December 5th, 2019 AT 12:24 PM (Merged)
Tiny
KENNETH P. MAAG
  • MEMBER
  • 2000 CHEVROLET IMPALA
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 150,000 MILES
How do you change the back spark plugs
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Thursday, December 5th, 2019 AT 12:25 PM (Merged)
Tiny
JDUBUYA
  • MEMBER
You have to feel for the plugs and use an extension and possibly an adapter so that you can get the right angle
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Thursday, December 5th, 2019 AT 12:25 PM (Merged)
Tiny
MAV32259
  • MEMBER
  • 2004 CHEVROLET IMPALA
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 130,000 MILES
How to change spark plugs on 2004 impala
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Thursday, January 2nd, 2020 AT 8:56 PM (Merged)
Tiny
DAVE H
  • MEMBER
The plugs are at positions 5,3,1 and 2,4,6 at the bottom of each side picture, pull number 1 wire off the top of the number 1 plug using a spark plug socket, unscrew plug from head .. screw new plug back in hole ... taking real care not to cross thread .. re-clip wire back onto plug .. repeat this for every plug .. do not mix up wires .. or your firing order will be wrong ..


https://www.2carpros.com/forum/automotive_pictures/266999_Graphic12_1.jpg

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Thursday, January 2nd, 2020 AT 8:56 PM (Merged)
Tiny
SANDMAN92097
  • MEMBER
  • 2002 CHEVROLET IMPALA
  • 6 CYL
  • FWD
  • AUTOMATIC
  • 145,300 MILES
How do you change the spark plugs on a 2002 Chevy Impala?
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Thursday, January 2nd, 2020 AT 8:56 PM (Merged)
Tiny
DENNYP
  • EXPERT
Remove the plug wires from the plugs, then remove the spark plugs from the engine with a 5/8 inch spark plug socket. (engine needs to be cold)

If installing the spark plugs to an existing cylinder head tighten the spark plugs to 15N m (11 lb ft).

Notice: Be sure plug threads smoothly into cylinder head and is fully seated. Use a thread chaser if necessary to clean threads in cylinder head. Cross-threading or failing to fully seat spark plug can cause overheating of plug, exhaust blow-by, or thread damage. Follow the recommended torque specifications carefully. Over or under-tightening can also cause severe damage to engine or spark plug


https://www.2carpros.com/forum/automotive_pictures/102900_spark_1.jpg



Note: Use only AC Delco spark plugs. Do NOT use Bosch plugs!
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Thursday, January 2nd, 2020 AT 8:56 PM (Merged)

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