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How difficult is it to just replace the rod bearings if they have play in them?

Tiny
BHAMDOC1973
  • MEMBER
  • 2015 MAZDA 6
  • 4 CYL
  • 2WD
  • MANUAL
  • 125,000 MILES
We replaced the chain as it had a bit of noise, we still have some noise coming from the bottom of the engine. This is the 2.5 sky active engine.
Wednesday, May 17th, 2023 AT 9:06 AM

7 Replies

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 48,363 POSTS
It is not too bad to do the rod bearing. You will need to remove the oil pan first, which I have included the instructions for in the images below.

For the SkyActiv-G 2.5L engine commonly found in the 2015 Mazda 6, the connecting rod bolt torque is typically around 33-38 lb-ft (45-52 Nm)

Check out the images (below). Let us know what happens and please upload pictures or videos of the problem so we can see what's going on.
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Wednesday, May 17th, 2023 AT 11:32 AM
Tiny
BHAMDOC1973
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Thanks.
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Wednesday, May 17th, 2023 AT 11:47 AM
Tiny
KEN L
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Use 2CarPros anytime, we are here to help. Please tell a friend.
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Thursday, May 18th, 2023 AT 11:33 AM
Tiny
BHAMDOC1973
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Not as simple as I thought it would be. I thought I would be able to see the bearings from below. Geez
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Saturday, May 20th, 2023 AT 8:37 AM
Tiny
KEN L
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That is the balance shaft assembly. Here are the instructions on how to remove it. Check out the images (below). Please let us know what happens.
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Sunday, May 21st, 2023 AT 11:32 AM
Tiny
BHAMDOC1973
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Yes, I don't want to fool with chains. I'll get another motor.
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Sunday, May 21st, 2023 AT 11:45 AM
Tiny
KEN L
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Sounds good.
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Monday, May 22nd, 2023 AT 10:45 AM

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