Hard engine knock

LYON022

MEMBER
2001 MERCURY SABLE
3.0L
V6
2WD
AUTOMATIC
102,848 MILES

I have the car listed above with a 3.0L 24V Duratec engine. I have changed the spark plugs and it is full of oil. There is a bad engine knock coming from what I believe is cylinder 2. I believe it could be a rod knock due to bad bearing because I drove it too hard. I just need a second opinion before I start taking the car apart to figure out the culprit.

Wednesday, November 13th, 2019 AT 12:46 PM

7 Replies

ASEMASTER6371

MECHANIC
52,796 POSTS

Good afternoon,

The fact you have oil in the cylinder tells me you have more of piston damage than bearing damage.

Can you upload a video of the noise so I can hear it? That will let me make a better opinion.

Roy

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Wednesday, November 13th, 2019 AT 3:05 PM

LYON022

MEMBER
4 POSTS

Oh well, I can get a recording of the sound give me some time on that. Thanks for the information. I'll be back to get the knocking sound.

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Wednesday, November 13th, 2019 AT 3:11 PM

ASEMASTER6371

MECHANIC
52,796 POSTS

Sounds like a plan.

We will be waiting for the video.

Roy

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Wednesday, November 13th, 2019 AT 3:12 PM

LYON022

MEMBER
4 POSTS

Good morning. I have the video for you. Hope it helps.

Video (Click to make bigger)

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Thursday, November 14th, 2019 AT 6:46 AM

ASEMASTER6371

MECHANIC
52,796 POSTS

Thank you.

You have either a broken piston, bad bearings or some other failure.

The bottom line is, you need a motor. You can either get a used motor or a rebuilt motor depending on what you want to spend.

Roy

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Thursday, November 14th, 2019 AT 6:57 AM

LYON022