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97 tapping noise

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Old Mar 11, 2006 | 04:04 AM
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97 tapping noise

sounds like a lifter. I pulled the valve cover started it to see witch one or three it was and it didnt make the tapping noise.Being the investigator I am I pulled a rocker arm off to ''have a look'' Well I didnt see much so I put it back together ,coverd it all up and the tapping quit.Four days later it started again.So I dont know if I should pull the cover every four days or what.
 
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Old Mar 11, 2006 | 11:00 PM
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Welcome to the forum

What size engine in your truck?
How did you decide which rocker to remove? Was there one that felt loose?
 
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Old Mar 12, 2006 | 08:13 AM
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tapping noise

It is a 4.2L.None of the rockers felt anyloser than the next so I pulled one from the front and one from the middle.
 
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Old Mar 12, 2006 | 10:36 AM
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How many miles on it?
Has the oil been changed regularly?
I'm wondering if you have a lifter that's sticking occasionally. It might be a good idea to try running some engine purge through it and then changing the oil and see what happens. The engine purge goes in the oil, you run the engine for half an hour or so and then change the oil.
 
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