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I bought a car at an auction with "mechanical" problems. It…

Customer Question
I bought a car...

I bought a car at an auction with "mechanical" problems. It is 2008 Prius. The engine knocks at idle and all speeds. I had another Prius with a clutch problem that sounded more like clanking. This noise sounds more like loud valve train noise. However the engine is smooth at idle and smooth driving down the road. No check engine lights are on. I have not run a scanner on it yet.

Mechanic's Assistant: Does the light stay on, or does it blink?

I said no check engine lights are on.

Mechanic's Assistant: Are you fixing your Prius yourself? What have you tried so far?

I have not started to trouble shoot. I am going to remove the belt to make sure the noise is not coming from something else. It seems loudest around the valve cover when i use a stethescope.

Submitted: 11 months ago.Category: Toyota
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Answered in 1 hour by:
7/31/2017
Toyota Mechanic: Ted Ritter, Toyota Master Tech replied 11 months ago
Ted Ritter
Ted Ritter, Toyota Master Tech
Category: Toyota
Satisfied Customers: 4,709
Experience: Toyota Master Tech, ASE Certified
Verified

Thanks for posting

Not quite sure what your question is, have you checked the engine oil? The valve noise may be due to low oil pressure. Be sure the check engine light turns on when the ignition is on, to be sure the bulb has not been removed and do a check engine scan and if possible scan for HV system codes of your scanner can access the system. Let me know about the noise after removing the belt and I'll be glad to answer any other concerns you may have.

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