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Jay
Jay, Certified Infiniti Technician
Category: Infiniti
Satisfied Customers: 4406
Experience:  20+years, Nissan and Infiniti experience and currently now working for a Infiniti Dealer
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I didn't change the oil on time and now I need a new engine?

Customer Question

I didn't change the oil on time and now I need a new engine?
JA: When was your last oil change?
Customer: May 2017
JA: What is the model of your '17 Infiniti?
Customer: it is a 2009 infiniti g37
JA: Are you fixing your G37 yourself? What have you tried so far?
Customer: I am trying to find out what I can try before replacing the engine
JA: Anything else you want the mechanic to know before I connect you?
Customer: no
Submitted: 8 months ago.
Category: Infiniti
Expert:  Jared D replied 8 months ago.

Good morning,

At this point do you know the extent of the damage?

Does the engine still run?

Customer: replied 8 months ago.
The car won’t start
Expert:  Jared D replied 8 months ago.

Does it crank or do nothing at all?

Is the oil level low?

Customer: replied 8 months ago.
It will crank but not catch
Customer: replied 8 months ago.
I took it to he Infiniti dealer who said I needed a new engine
Expert:  Jared D replied 8 months ago.

Did they perform a compression test or anything?

Typically an engine won't start because it doesn't have one of the three necessary things it needs to run: Compression, fuel, and spark.

The only one of those three affected by oil level or oil condition is compression.

Customer: replied 8 months ago.
They said I have so much sludge it has clogged the valves
Customer: replied 8 months ago.
They ran a full diagnostics and I will get the report today
Expert:  Jared D replied 8 months ago.

If the only issue is sludge it's likely that it can be cleaned out and make the engine run again.

The valves they are likely talking about are the cam phaser control valves- they are the only valves that the oil reaches directly.

Expert:  Jared D replied 8 months ago.

Please let me know if you need additional info.