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Tim Mohr
Tim Mohr, ASE MASTER TECH
Category: Nissan
Satisfied Customers: 560
Experience:  30 YRS EXPERIENCE, FOREIGN AND DOMESTIC, GAS AND DEISEL
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2004 Maxima, 95k miles, knocks upon starting seconds, all

Customer Question

2004 Maxima, 95k miles, knocks upon starting for 2 seconds, all types of oil filter, doesn't change!
Submitted: 1 year ago.
Category: Nissan
Expert:  JOHN aka Eauto replied 1 year ago.

and it goes away and stays quiet after that? what type of oil are you using? how many miles?

Customer: replied 1 year ago.
5w 20, non synthetic, changed every 3k
Expert:  JOHN aka Eauto replied 1 year ago.

how many miles?

Customer: replied 1 year ago.
Knock does not return untill engine is not running for 15 minutes. Sounds the same as empty oil filter.
Expert:  JOHN aka Eauto replied 1 year ago.

so after 15 minutes it starts knocking again? upper or lower end?

Customer: replied 1 year ago.
Only knocks for 2 seconds "when first started", sounds like connecting rods.
Customer: replied 1 year ago.
You're asking me questions that I have already supplied you the answer.
Expert:  JOHN aka Eauto replied 1 year ago.

have you verified oil pressure? how many miles? its likely a weak oil pump or crank bearings that are worn

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