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Thanks for the information.
Here is the procedure to adjust the overhead. Please let me know if you have more questions.
I have seen this many times lately.
Did you replpace the head on the engine?
I see. I have seen several head latley that were machined wrong and the valve could not be adjusted.
Which valve are you on? Intake or Exhaust?
If it is the intake, you will need to back off the IVA screw. If it is the Cat Brake, you will need to back it off as well before adjusting the valve.
If the IVA screw is backed off and the 15 thousands gauge will not go under the rocker arm, the rocker arm must be bent. I would recommend removing the arm and comparing it with other intake rocker arms.
Is it just one valve or more of them?
Try and look closley where the IVA contacts the rocker arm and see if it is touching the intake rocker arm .
Is this happening on just one cylinder?
So you were able to adjust all the other intake valves?
You may be on TDC compression #6 instead of TDC #1.
It is possible that the flywheel has been put on incorrectly. It normally happens when a clutch job has been performed on the engine. As I'm sure you know, there is a dowel pin on the back of the crankshaft that is suppose to go into the flywheel. I have seen several times over the years where the flywheel has been put on without a dowel pin, or the bolts have been run down and destroyed the dowel pin.
To verify this, see if you can rotate the engine over a little bit a t a time and see if you can get the feeler gauge under the rocker. If you can, that means you were adjusting when the cam was coming up and the flywheel is on wrong.
It is the only thing that makes since.