Won't Spin Past Compression Stroke

Try this workaround. Turn the engine crankshaft backward till it turns hard because of compression, then use electric starter normally. Nature of the beast on some engines. Good luck
 
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Attached car battery. Will not spin past compression stroke.
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No knowledge of how the car battery was attached . Attach jumper cable + to starter lug and - lead touching the starter case or other good ground .
If no crank then remove spark plug wire and unscrew the spark plug 1 round and try it .
 
No compressio release works off the bottom valve which is the intake. Three things can cause this problem valves out of adjustment. Broken compression release and can lobe slipped on the cam shaft. Adjust the valves and try to start it. If no start turn the engine backwards until it gets hard to turn and try to start it again. If no start it is probably the cam lobe has slipped on the cam shaft.
 
This is all adding up to a failed compression release. Aftermarket cams are junk and genuine Briggs are on backorder the last time I had to get one.

On top of it, the starter has likely been strained repeatedly and will soon fail once the cam problem is solved.
 
Auto Doc's said:
This is all adding up to a failed compression release. Aftermarket cams are junk and genuine Briggs are on backorder the last time I had to get one.

On top of it, the starter has likely been strained repeatedly and will soon fail once the cam problem is solved.
Click to expand...
Looks like Ohio has 431, NY has 589, NC has 612, TX has 53, and UT has 214, and IA is out of stock but that is PD's version of a Amazon warehouse with robot picking and the robot AI hasn't learned to order it's own replacement stock yet. Iowa is always the first warehouse to run out of stock, and the last warehouse to get restocked.
 
Auto Doc's said:
This is all adding up to a failed compression release. Aftermarket cams are junk and genuine Briggs are on backorder the last time I had to get one.

On top of it, the starter has likely been strained repeatedly and will soon fail once the cam problem is solved.
Click to expand...
Very well could be the compression release failed.

I would adjust the valves first. Probably never been adjusted since the engine left the factory.
 
After 18 replies, 3 different starter replacement attempts and jumping with a vehicle battery, the obvious that has been explained is not sinking in.

This seems to be stuck in a "let's replace something loop"... valve adjustment does not compute. No capability?
 
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