Line up the timing marks correctly the way they should be and lets diagnose this no start condition. Lets be sure the engine has spark fuel and compression. If there is spark and compression, then this thing should run on starting fluid. If there is spark but no compression, then we will have to investigate further into the engine.
What is the compression at?
Does it run with starting fluid?
cyl 1-110 cyl-2-110 cyl-3-95 cyl-4-105 starting fluid ???
Why is cylinder number three low on compression?
Yeah... try spraying starting fluid into the intake and see if she fires up.
Disconnect #1 ignition wire at the spark plug. Install a spark tester into the end of the spark plug boot. Have an assistant crank the engine over and check for spark at the tester. Repeat this process at each spark plug.If any cylinder does not show spark, proceed to secondary component tests. If ALL secondary components show no spark, test components individually. If all cylinders test O.K., inspect for fouled spark plugs and clean or replace as necessary.
Thanks for the accept!