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Old 07-12-2013, 06:41 PM   #1
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rocker arm adjust

I have heard at least 3 different ways on how to adjust the rocker arms in my 350. Have at least one tapping like the nut has backed off. I want to go through and adjust all of them. When I get down on it and my 4-barrel kicks in it sounds like all of them are rattling. What do y'all say?
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Old 07-12-2013, 06:48 PM   #2
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Adjust the lash with the motor running. Back the nuts off until the rockers start tapping then tighten them until the tapping stops then go another quarter turn and lock them.
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Old 07-12-2013, 06:50 PM   #3
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If the 4 barrel kicking in makes the lifters sound like they're rattling I would suspect a pinging / pre-ignition issue.

If a lifter / rocker is rattling constantly it's more likely a stuck lifter than a loosened adjustment nut.
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Last edited by NavyVet; 07-12-2013 at 06:55 PM. Reason: dyslexic keyboard
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Old 07-12-2013, 09:09 PM   #4
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Quote:
Originally Posted by 94 T/A View Post
Adjust the lash with the motor running. Back the nuts off until the rockers start tapping then tighten them until the tapping stops then go another quarter turn and lock them.
How do you lock them?
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Old 07-12-2013, 09:10 PM   #5
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Quote:
Originally Posted by NavyVet View Post
If the 4 barrel kicking in makes the lifters sound like they're rattling I would suspect a pinging / pre-ignition issue.

If a lifter / rocker is rattling constantly it's more likely a stuck lifter than a loosened adjustment nut.
Please explain about pinging/pre-ignition
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Old 07-13-2013, 11:35 PM   #6
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I may get some good info from this thread..continue
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Old 07-14-2013, 10:41 AM   #7
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Quote:
Originally Posted by ibjgfan View Post
How do you lock them?
you don't, they are self locking

Quote:
Originally Posted by ibjgfan View Post
Please explain about pinging/pre-ignition
Caused by fauly ignition timing or running cheap ( low octane ) gas or both.
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