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Discussion Starter #1
After driving a few miles I started to hear a ticking noise. I opened up the valve covers and noticed that one of the rocker arms was loose and some of the pushrods were spining easily and so I re-adjusted all the rocker arms. Now the engine turns but will not fire up and it sounds like something is stuck. I loosed up the rocker arms and re-adjusted them but still the engine will not start. Is it possible that I over tightened the rocker arms causing some of the lifters to get stuck in the lifter bores?
 

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Nice thread. Looks like the information this guy will need. Hopefully he will have the info on the cam that is installed. Could get interesting if not.
 

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a couple of other things to check for may be a stud pulling out of the head if they are press in type. There could be damage to the lobe of the cam that the loose rocker arm works against.
 

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Yes, if you get them too tight you don't get any compression on startup. It is possible you started adjusting them with #6 at TDC instead of #1 if you did it after a couple of cocktails like I've been known to do.

Here's how I set mine with a not-too-radical cam:

Set the engine at TDC for #1. Verify by pulling the distributor cap to see that the rotor is at #1. Or since you have the covers off, rotate the engine clockwise so the marker passes through 0 on the timing tab and one of the #6 valves starts to rock, you are on TDC for #1. Then turn the motor back counter clockwise to the 0 point.

I find zero lash by doing the following:
Use a 0.0015 feeler gauge between the valve and rocker tip. Turn the rocker nut down by hand (if possible) while sliding the feeler gauge in and out. When there is a slight drag on the feeler gauge, stop. Tighten the rocker nut down 1/2 a turn from this point. (I use 3/8 turn on my lumpy cam). If you get a little tick, no biggie. I'd rather have one a tad loose than a tad tight.

Adjust the following rockers:
Intake: 1-2-5-7
Exhaust: 1-3-4-8

Rotate the engine one full turn clockwise to get the balancer mark back at 0. Adjust the following rockers:
Intake: 3-4-6-8
Exhaust: 2-5-6-7
 

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Discussion Starter #6
I noticed that on some of the hydraulic lifters, the pushrod will not push back up after I push down on them. Does that mean that the spring inside the lifters are broken?
 
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