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.

7 Replies

ASEMASTER6371

MECHANIC
52,797 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

SPONSORED LINKS

Was this

answer

helpful?

Yes

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.

Was this

answer

helpful?

Yes

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

ASEMASTER6371

MECHANIC
52,797 POSTS

Sounds like a plan.

We will be waiting for the video.

Roy

Was this

answer

helpful?

Yes

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)

Was this

answer

helpful?

Yes

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

ASEMASTER6371

MECHANIC
52,797 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