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Old 09-01-2015, 02:38 PM   #1
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Default LS series engine cam question

I have a really bad ticking noise coming from one lifter.........is it possible to remove the intake manifold and the knock sensor plate (underneath the manifold)....to get a look at the cam lobes?

I've narrowed the sound coming from a lifter associated with the #5 and/or #7 cylinder area.

The engine is 5.3 liter LS series engine.
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Old 09-02-2015, 03:55 AM   #2
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Originally Posted by 1.8TTony View Post
I have a really bad ticking noise coming from one lifter.........is it possible to remove the intake manifold and the knock sensor plate (underneath the manifold)....to get a look at the cam lobes?

I've narrowed the sound coming from a lifter associated with the #5 and/or #7 cylinder area.

The engine is 5.3 liter LS series engine.
UPDATE:

Well, here is what I did.....I used a stethoscope on the engine and isolated the ticking noise.....it was coming from the rear of the passenger side cylinder head. I removed the cylinder head cover and found that I could compress the #7 intake lifter with my finger.....I could not compress any of the other lifters with my finger.

I ended up removing the cylinder head and removing the single lifter that I had compressed with my finger. I disassembled the lifter and found that the internal piston as well as its push rod seat had slight discoloration on them. The discoloration, I am assuming is coming from uneven wear within the lifter bore.

Here are some pictures:




















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LS series engine cam question-80-11954583_874614365948075_3160678476864193257_n_3e46e55c9a167173b6b7fd2b9398c1961a813030.jpg   LS series engine cam question-80-11924545_874615902614588_8632350722045075169_n_8039f546fec07fe43396c4663e0167c8b21e25f4.jpg   LS series engine cam question-80-11236433_874616052614573_4309587480186949066_n_65d0681f958193bf98f761d4041fbcadca719d27.jpg   LS series engine cam question-80-11960014_874616065947905_5302415561712867269_n_443f270a147e6b0a75f21e5a169afea1bce0c306.jpg   LS series engine cam question-80-11988499_874616092614569_7685588681711407989_n_bdd3a742f4f9fb14bca913418c31ae43cae882b8.jpg  

LS series engine cam question-80-11150756_874616152614563_4961489588494009651_n_fd2bcd32fd3180f33859cd9e22f1b651a933a912.jpg   LS series engine cam question-80-11918934_874614279281417_8154796611264216828_n_6df3bb41aae21e544d05acf8b0947d112910995e.jpg  
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