i have an intek 31C707 17.5hp and an intek 331877 19hp with the same issues
both spin over easy and free with no spark plug so i set the valves, which were a little off on both engines but not by much.
i confirmed flywheel keys for correct timing on both engines and they both spin free until the compression stroke and then the starter cant turn it any more and they both have good spark and i even disconnected the gas line in case they were flooding or hydro locking but they arent and even with no gas that didnt help them be able to turn over at all.
its not locked up or stuck, it just has a lot of compression stopping the engine from turning over.
i even connected to my truck battery to eliminate any weak battery issues and nothing changed
i have never run into this before, all the times before i just set the valves and walla engine spins easy and starts right up, so im at a loss whats going on here.
both engines are from unknown history but visibly look nice and not like they were sitting out side unprotected.
i opened one up and there is no evidence of anything being bent like a piston rod or any cam issues that i could tell just by looking at it.
anybody run into anything like this before and have some wisdom they can pass along to me?
both spin over easy and free with no spark plug so i set the valves, which were a little off on both engines but not by much.
i confirmed flywheel keys for correct timing on both engines and they both spin free until the compression stroke and then the starter cant turn it any more and they both have good spark and i even disconnected the gas line in case they were flooding or hydro locking but they arent and even with no gas that didnt help them be able to turn over at all.
its not locked up or stuck, it just has a lot of compression stopping the engine from turning over.
i even connected to my truck battery to eliminate any weak battery issues and nothing changed
i have never run into this before, all the times before i just set the valves and walla engine spins easy and starts right up, so im at a loss whats going on here.
both engines are from unknown history but visibly look nice and not like they were sitting out side unprotected.
i opened one up and there is no evidence of anything being bent like a piston rod or any cam issues that i could tell just by looking at it.
anybody run into anything like this before and have some wisdom they can pass along to me?