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3.8 engine / real loud valve train noise when cold not as…

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3.8 engine / real loud...
3.8 engine / real loud valve train noise when cold not as bad when hot put new set of lifters in didn,t help. what else could cause the loud pecking
Submitted: 2 years ago.Category: Buick
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Answered in 14 minutes by:
2/15/2016
Buick Mechanic: Roy Belding, ASE Certified Technician replied 2 years ago
Roy Belding
Roy Belding, ASE Certified Technician
Category: Buick
Satisfied Customers: 7,916
Experience: Master ASE since 1980
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good afternoon my name is ***** ***** I will assist

most of the time the reason for this is the oil pump. there is or should be some residual oil pressure from the pump. the oil is most likely leaking down and the lifters are dry until oil pressure builds up.

I would try to have the oil system flushed by using a cleaning agent such as sea foam. let it run for about 45 to an hour and then change the oil and filter. this may help with pressure relief valve in the pump.

Roy

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Buick Mechanic: Roy Belding, ASE Certified Technician replied 2 years ago

how are you making out

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Buick Mechanic: Roy Belding, ASE Certified Technician replied 2 years ago

please dont forget to rate me as it is the only way I get paid for my efforts

Roy

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Buick Mechanic: Roy Belding, ASE Certified Technician replied 2 years ago

please dont forget to rate me as it is the only way I get paid for my efforts

Roy

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