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Chris (aka- Moose)
Chris (aka- Moose), Cadillac Technician
Category: Cadillac
Satisfied Customers: 48656
Experience:  16 years of experience
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I have 2007 dts vin y northstar, 118,000 miles. it has a

Customer Question

I have 2007 dts vin y northstar, 118,000 miles. it has a ticking sound from left rear of engine valve cover area, it is not consistent,sometimes it does not tick at all & others it constantly loss of power it runs great. I have 3 northstar vehicles & they other 2 have some light noise but the one in question is much more pronounced. what should i check ? I am an ase master tech & also have L1. but i have not done much work on northstars besides crossover gaskets,oil pans & valve cover gaskets. I love these cars & any advice would be helpful. Thanks, Dave
Submitted: 1 year ago.
Category: Cadillac
Expert:  Chris (aka- Moose) replied 1 year ago.

Welcome, I am Chris (aka-Moose)

I believe in this case you need to remove the valve cover so you can check the valve train components. Possible causes are a cam bearing damaged, lifter not pumping up, or worn out rocker arm,

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