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There's a rattle coming from top driver side of 2UZFE

Customer Question
There's a rattle coming from top driver side of 2UZFE
Submitted: 2 months ago.Category: Toyota
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Answered in 4 hours by:
12/20/2017
Toyota Mechanic: nelson freitas,
 replied 2 months ago
nelson freitas
Category: Toyota
Satisfied Customers: 113
Experience: AutomotiveTechnician at brantford toyota
Verified

Hello, and thanks for using JustAnswer, my name is ***** ***** I have been an Automotive Technician for over 15 years, and currently working at a Toyota dealership.

I will look into this and get back to you shortly

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Toyota Mechanic: nelson freitas,
 replied 2 months ago

I dont see any common problems with this engine, when does the noise occur?

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Customer reply replied 2 months ago
It usually occurs immediately, even upon cold start but becomes more pronounced as the vehicle warms up. It sounds like a rotational noise more than a lifter. It may be the oil pressure valve for the VVTI but I'm not sure. I would've thought it was a pulley bearing going bad but the timing belt was changed 20k mi ago. I'm gonna try the dealership once more or throw a video up on a forum. The motor does have 209k mi on it but Carfax shows all maintenance was kept up. I guess it could still be a pulley bearing if the Seafoam thin the oil, changing the bearing resistance possibly, accounting for the noise reduction. It pulls great. No performance issues. I'll try to get you a vid tomorrow, but the fan will probably drown out the noise.
Customer reply replied 2 months ago
Also to me it seems like a constant speed, not like a variable engine speed noise like you'd hear with a valve/lifter as rpm changes. I'll try to confirm this tomorrow also.
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