Engine replacement

Tiny
CANNON1349
  • MECHANIC
  • 2009 NISSAN SENTRA
  • 4 CYL
  • 2WD
  • AUTOMATIC
  • 165,000 MILES
Car was brought in making a ticking noise, and smoke coming out of the dipstick tube and tail pipe pretty bad. After an oil change the car will not get enough compression to start. So it looks like the piston rings have gone bad.

What's the procedure for an engine replacement? Doesn't look too bad for a little four cylinder
Thursday, September 5th, 2019 AT 7:01 AM

13 Replies

Tiny
KASEKENNY
  • MECHANIC
  • 18,907 POSTS
Hi,

Is this a 2.5L or the 2.0L? They are not much different but want to send the correct procedure. Thanks
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Thursday, September 5th, 2019 AT 5:10 PM
Tiny
CANNON1349
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It's a 2.0L DOHC.
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Thursday, September 5th, 2019 AT 5:25 PM
Tiny
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Here is the procedure for the engine. Let me know if you need any information on some of the sub systems that it tells you to remove.

Thanks for using 2CarPros.
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Thursday, September 5th, 2019 AT 6:59 PM
Tiny
CANNON1349
  • MECHANIC
  • 581 POSTS
What is a "front fender protector"?
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Saturday, September 7th, 2019 AT 11:19 AM
Tiny
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I included the detail about that but unfortunately it is not very detailed. It is the inner fender liner. They are usually black but it is in behind the wheel and made of plastic that protects the fender and engine compartment from getting all the road debris whipped up into it while you are driving.
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Saturday, September 7th, 2019 AT 11:55 AM
Tiny
CANNON1349
  • MECHANIC
  • 581 POSTS
Are you sure that there is no way the engine can come out from the top?
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Saturday, September 7th, 2019 AT 3:16 PM
Tiny
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  • MECHANIC
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Anything is possible however, with this being a trans-axle and not a rear wheel drive transmission, there is no easy way to separate the transmission from the engine while in the vehicle, which is why they have you remove them together then separate them.

If you are going to remove it from the top then you will need to separate them and then get a transmission sling in order to support the transmission while you remove the engine or it will fall out. Plus I doubt they will both fit out of the top if you try to take them out of the top together.

From my experience, it is far easier to remove these from underneath. If fact, I have never tried to remove it from the top.
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Saturday, September 7th, 2019 AT 8:35 PM
Tiny
CANNON1349
  • MECHANIC
  • 581 POSTS
I'm just worried about the clearance under the vehicle. Kind of difficult to jack it up so high.
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Sunday, September 8th, 2019 AT 6:02 AM
Tiny
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  • MECHANIC
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Totally understand. This was not designed for someone to do without a shop and a lift. It can be done but clearly you have to get the car high enough to get it out. I have not done this but people have told me stories. To get the stability they seem to use two jacks one on each side and then take it up evenly.
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Sunday, September 8th, 2019 AT 5:11 PM
Tiny
CANNON1349
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I have the tools. Just not the lift. Since I have to take the intake off that takes out maybe 4 inches. Hm.

Also, do the axles come out of the steering knuckle or does the entire knuckle have to come off? And, what is a torque rod?

Lastly, this is an automatic transmission so I don't think there are bolts piercing the oil pan.
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Sunday, September 8th, 2019 AT 5:16 PM
Tiny
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Here is the process for the axles. You don't need the knuckle and everything. Just the axle shaft because it will hang up in the transmission when you try to drop it out. I attached a picture of the strut rod. It is the mount.

You are correct. The bolts through the pan are for manual only.
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Sunday, September 8th, 2019 AT 7:39 PM
Tiny
CANNON1349
  • MECHANIC
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I don't have to drain the transmission or anything? Even when separating?
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Sunday, September 8th, 2019 AT 8:22 PM
Tiny
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You don't have too. You can if you want to make it lighter. The converter will remain in there and technically you are not lifting it that any would pour out. You may loose a little when you disconnect lines but topping it off is all that would be needed.
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Monday, September 9th, 2019 AT 2:04 PM

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