This is totally off the wall, But have never got this issue in all my years.
Have a 6Hp generator, that has run for 5 years or so, no problem.
Now all of a sudden, it has developed excessive high compression , so much so that you break the pull string trying to start it.
When she gets to TDC its as if she has a fuel lock, ie, as if the chamber is full of fuel.
Full lock, but if you keep tension on the rope, she slowly goes through compression and turns freely again.
When you remove the spark plug she runs freely, and nothing is ejected out the plug hole.
Now you may say she has per-ignition, but this happens even when ignition is switched off with no spark.
Even removing the plug lead, she still does this.
Now I have removed the rope pull starter and when fitting a drill and socket she spins and starts no problem.
Yes a bit of a jerk on the arms but she runs.
Now you may think that after running for 10 min or so she would be easy to start as its got the "Fuel Lock" out of its chamber, but no
She has this same problem the sec you stop her again.
Any ideas ........
Herman
