It may need a lifter or valve adjustment when cold they will tick or knock depending on how loose or worn out then when it warms up they swell with heast and noise stops. after adjusting or replacing it will stop making noise
some have to be replaced , but honestly i wouldnt worry about it until it is always ticking it can affect fuel economy but not to bad if it gets real bad it can affect performance . but when you notice any big changes then get it fixed its a pretty simple repair if you have mechanical ability. but until its worse leave it alone say if you hear it tapping when at around thre thousand rpm then i would repair it.
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Can the lifters/valves be adjusted ?? or do they need to be replaced ?? If I let it go can I do harm to my blazer ??
THANK YOU
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