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Replacement of spark plugs (with gap) and wires?

Tiny
STEVE W.
  • MECHANIC
  • 13,572 POSTS
What do you mean by "opened my air filter"? The airbox on that vehicle does a lot more than just hold the filter.
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Monday, May 3rd, 2021 AT 10:17 AM (Merged)
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DUSTIN PECK
  • MEMBER
  • 2 POSTS
I bought NGK cheap spark plugs. I did scan the car and it came up low on bank one o2 sensor.
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Monday, May 3rd, 2021 AT 10:17 AM (Merged)
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HARRY P
  • MECHANIC
  • 2,292 POSTS
Get Delco plugs. NGK is for Japanese cars, not any good in that engine. Then clear the codes and try it. Let us know.
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Monday, May 3rd, 2021 AT 10:17 AM (Merged)
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DIAMIA
  • MEMBER
  • 1 POST
  • 2000 BUICK LESABRE
  • 6 CYL
  • 2WD
  • MANUAL
  • 630,000 MILES
How do you reach the rear spark plugs to replace them?
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Monday, May 3rd, 2021 AT 10:17 AM (Merged)
Tiny
DENNYP
  • MECHANIC
  • 1,824 POSTS
You will need a 5/8 spark plug socket, a 6 to 8 inch long 3/8 drive ratchet, and a 3 inch long 3/8 drive extension. You can get to them from the top side of the engine. It's tricky, but it can be done.
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+2
Monday, May 3rd, 2021 AT 10:17 AM (Merged)
Tiny
WHITNEY_SCB
  • MEMBER
  • 1 POST
  • 1998 BUICK LESABRE
  • 6 CYL
  • FWD
  • AUTOMATIC
  • 167,000 MILES
I was driving a couple days ago and the engine light started blinking then stayed on. I hooked up an OBD 2 to see what code it was throwing. It had a cylinder 3 misfire, so I asked a friend what would be the best course of action. They suggested that I start by changing the spark plugs and cylinder 3/6 coil pack, and go from there. So, I did just that. I replaced all spark plugs, wires, and cylinder 3/6 coil pack. The problem seem to worsen, at first I would only feel the sputtering over 50 mph and at idle. Now, the engine light blinks and the conditions can be felt at all times. I'm not sure where to go from here? I corrected what I thought was the problem and now it seems to have gotten worse! NEED HELP!
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Monday, May 3rd, 2021 AT 10:17 AM (Merged)
Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
A misfire can be a bad injector/fuel filter spark plug/wire/ or valve or something similar. But the spark plugs are a good place to start here is a guide to help also you must remove the top engine torque mount to rock the engine forward to get to the rear plugs. This guide can help us.

https://www.2carpros.com/articles/how-to-test-an-ignition-system

Spark Plug Type .................... AC plug type 41-921

Gap 1.52 mm (0.060 in)

Please run down this guide and report back.
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Monday, May 3rd, 2021 AT 10:17 AM (Merged)

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